You'll shape the future of the Kotlin ecosystem by creating and maintaining foundational libraries used by hundreds of thousands of developers.

Jobs at JetBrains

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You'll architect **shared-code strategy** for Kotlin Multiplatform, powering experiences across Android, iOS, and web.

Cantina

Cantina Jobs

You'll develop **Android applications** using **Kotlin and Clean Architecture**, owning features end-to-end from definition to production deployment, while

Despegar

Online B2C travel agency

About Qualysoft · 25 years of experience in software engineering, established in Vienna, Austria · Active in Romania since 2007, with office in central Bucharest (Bd. Iancu de Hunedoara 54B) · Delivering End to End IT Consulting Services - From Team Augmentation and Dedicated Teams to Custom Software Development · We deliver scalable enterprise systems, intelligent automation frameworks, and digital transformation platforms · Cross-industry experience by sustaining global players in BSFI (Banking, financial services and insurance), Telecom,Retail & E-commerce, Energy and Utilities, Automotive, Manufacturing, Logitics, High Tech · Global Presence: Switzerland, Germany, Austria, Sweden, Hungary, Slovakia, Serbia, Romania, and Indonesia · International team of 500+ software engineers · Strategic partnerships: Microsoft Cloud Certified Partner, Tricentis Solutions Partner in Test Automation and Test Management, Creatio Exclusive Partner, Doxee Implementation Partner · Powered by cutting-edge technologies: AI, Data & Analytics, Cloud, DevOps, IoT, and Test Automation. · Project beneficiaries ranging from large-scale enterprises to startups · Stable growth and revenue increase year over year, a resilient organisation in volatile IT market conditions · Quality-first mindset, culture of innovation, and long-term client partnerships · Global and local reach – trusted by key industry players in Europe and the US

Qualysoft

Job openings at Qualysoft

Who we are Konrad is a next generation digital consultancy. We are dedicated to solving complex business problems for our global clients with creative and forward-thinking solutions. Our employees enjoy a culture built on innovation and a commitment to creating best-in-class digital products in use by hundreds of millions of consumers around the world. We hire exceptionally smart, analytical, and hard working people who are lifelong learners. About the Role As a Mobile Developer you'll be tasked with working on Android application development. Working within the software development team, your duties will require you to assist in the development of consumer and enterprise applications. This role is ideal for developers who feel confident in their technical ability and want to be a part of the highly-skilled and constantly improving development team at Konrad. What You'll Do Write maintainable, testable, and performant software in collaboration with our world class team. Participate in code review and performing extensive testing to ensure high quality software. Research new technology and tools and share those findings with the team. Communicate clearly and effectively with all members of our team. Continuously provide feedback to the mobile development process within our company. Qualifications 1+ years of professional experience building Android applications with Kotlin. Strong command of important programming and computer science concepts. Ability to understand a mobile application and how it's built from end-to-end. Fundamental knowledge of core mobile principals (UI implementation, Android application development frameworks, Restful APIs). Knowledge of latest mobile technologies including Kotlin, Reactive Programming, Android Jetpack, Unit Test, and design patterns such as MVVM, MVP, TDD. Great interpersonal skills - we work very closely together as a team and require a lot of communication. Proactive personality, and a desire to deliver your best work. A love for improving software development workflows/process. Excellent English communication skills, written and verbal, are required. Nice To Have Experience with or an understanding of newer approaches to networking, like GraphQL. Other mobile development experience, such as iOS development using Java or Kotlin, or cross-platform development with React Native, Flutter, Ionic, Xamarin, or Cordova. Perks and Benefits Mentorship Program Comprehensive Health & Wellness Benefits Package Parental Leave Program Flexible Working Hours Work from Home Flexibility Service Recognition Programs Socials, Outings & Retreats Culture of Learning & Development Konrad is committed to maintaining a diverse work environment and is proud to be an equal opportunity employer. All qualified applicants, regardless of race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status will receive consideration for employment. If you have any accessibility requirements or concerns regarding the hiring process or employment with us, please notify us so we can provide suitable accommodation. While we sincerely appreciate all applications, only those candidates selected for an interview will be contacted. #LI-Hybrid

Careers | Konrad®

If you’re a passionate lifelong learner and excited to work with the world’s best, we would love to meet you.

SumUp builds simple, affordable financial tools that help over 4 million small businesses across 37 markets get paid, manage their money, and grow. Beyond card payments, we offer a full suite of financial products - business banking, lending, invoicing, and money transfers - giving merchants everything they need in one place. We're a global fintech with over 3,000 people across 20+ offices, and Sofia has been one of our most important engineering hubs since the very beginning. Our Transfers Excellence squad sits within SumUp's Global Bank , and owns the core services that power how merchants and consumers move money. E.g. IBAN-based transfers, money in and out, and peer-to-peer payments via the SumUp consumer app. With the high volume transfers per hour across our European markets. That means reliability isn't a nice-to-have - it's the baseline for us. Right now, the team is replacing a set of market-specific implementations with a single, unified global transfer platform that will serve Europe, the UK, Brazil, Chile, and eventually the US and Canada. Join our team and contribute directly to platform-level architecture that will shape how SumUp moves money at scale - work that directly impacts millions of small businesses every day. Our tech stack includes Kotlin, Java, Go, a bit of Elixir, AWS, Kafka, PostgreSQL, and Kubernetes, supported by a strong observability toolchain with Prometheus, Grafana, and Honeycomb. We also actively use AI‑assisted development tools such as Cursor, GitHub Copilot, and others. 🎥 Get a feel for life in our Sofia office . What you'll do Build and maintain backend services that sit at the heart of SumUp's transfer infrastructure, taking end-to-end ownership from development through to observability, testing and production support Contribute to the migration from market-specific services toward a unified global transfer platform, working across a mix of active services and legacy systems being decomposed Raise well-scoped pull requests, conduct thorough code reviews, and help maintain high standards of code quality and test coverage across the team Participate in incident reviews and the on-call rotation, taking accountability for the reliability of the services you build Contribute to the technical roadmap by participating in architectural discussions and proposing solutions for complex, distributed systems challenges Apply AI tooling to accelerate your own engineering workflows and contribute to raising the team's overall AI literacy You'll be great for this role if… Solid experience as a Backend Software Engineer in modern languages (e.g. Kotlin, Go, Java, etc.). Kotlin is the team's primary language and we also work with Java, Golang, and Elixir. Solid understanding of distributed systems and event-driven architecture. Experience with async processing and messaging tools like Kafka (or similar). Experience working with microservice architectures, including Spring Boot and event-driven patterns, alongside solid knowledge of relational databases and API design Comfortable working in high-throughput, regulated environments where reliability matters. Defensive coding and attention to edge cases are part of the job Clear communicator in written and spoken English, with a collaborative approach to working across global teams Curious about the product impact, not just the code. Comfortable thinking about how backend decisions affect the end user experience. Why you should join SumUp 🌍 Opportunity to work with SumUppers globally on large-scale fintech products used by millions of businesses worldwide, from our modern Sofia office. This involves an office-first setup 🌈 Commitment to Diversity and Inclusion: be part of a workplace that values and promotes diversity, fostering an inclusive environment where everyone's perspectives are respected and embraced 🚀 Enrolment onto our Virtual Stock Option programme: you will own a stake in SumUp's future success 📚 A dedicated annual L&D budget of €2000 and 10 paid days of educational leave which can be used to attend conferences and/or advance your career through further education 🏖 Generous time off: 25 days of paid leave, plus one extra day per year of service (up to 35), along with public holidays and special leave options 🏥 Peace of mind: additional health insurance and life insurance 💪 Stay active: on-site yoga and a co-sponsored Multisport card offering access to hundreds of sports facilities 🍽 Meal support: benefit from a tax-free food voucher program plus flexibility via our Re:Benefits platform 🚌 Easy commute: free shuttle buses connecting directly to Joliot-Curie metro station 🌴 Break4me: 1-month sabbatical after 3 years of service 🔗 Referral Bonus: earn additional rewards by referring talented individuals to join the SumUp team About SumUp Be empowered to do more that matters. At SumUp, we're on a mission to empower small businesses across the globe by providing simple and affordable tools that allow them to thrive. Today, over 4 million businesses in 37 markets rely on SumUp as their financial partner to manage payments, finance and customer relationships. Our commitment to small businesses is reflected in our diverse team of over 3,000 SumUppers from over 90 nationalities, united by global collaboration and an innovative mindset. Our core values lay the foundation for who we are and what we stand for, shaping our work culture and driving our success. We foster inclusivity and a continuous learning culture, providing a safe space for personal and professional growth. Our differences make us unique and strong as we strive to create an environment where everyone belongs and feels supported, no matter how they identify. SumUp is proud to be an Equal Employment Opportunity employer, actively seeking and embracing diversity in our workforce. We don't make hiring or employment decisions based on race, colour, religion or religious belief, ethnic or national origin, nationality, sex, gender, gender identity, sexual orientation, disability, age or any other basis protected by applicable laws or prohibited by company policy. Our commitment extends beyond recruitment to creating a safe and respectful workplace where harassment of any form is strictly prohibited. Discover more about our culture and opportunities on our careers website , and follow our journey on LinkedIn , Instagram , and TikTok . Job Application Tip We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.

Join our team | Explore open positions at SumUp

Looking to make a real difference? Help us build a world where anyone can build a thriving business. SumUp is…

You'll join the Kotlin Compiler team to test new language functionality and changes alongside developers.

Jobs at JetBrains

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Nossa área de Cartões A área de Cartões atua em três frentes: Autorização, Uso/Ofertas e Faturas/Pagamentos. A frente de Autorização é focada em backend transacional com jornadas críticas que exigem atuação sob pressão. Já Uso e Ofertas tem um perfil mais voltado ao design (HX) e frontend com foco em jornadas no app, criação e manutenção de cartões, cartão virtual e wallets, exigindo visão holística e integração entre front e back. Por fim, Faturas e Pagamentos envolve o fluxo de montagem de faturas, experiência no app, cobrança, contato com o gestão de dívidas do banco e temas como anuidade e parcelamento de faturas e fluxos de pagamentos. Suas atividades como CSixer Conduzir a implantação completa do produto, abrangendo ambientes de Homologação, Produção e Deploy, garantindo entregas seguras e eficientes; Dominar a arquitetura e o design dos componentes do produto, compreendendo profundamente as decisões técnicas e justificativas que embasam cada escolha; Assegurar a qualidade do desenvolvimento, promovendo práticas de codificação robustas, revisão de código e mantendo alta cobertura de testes automatizados para garantir a estabilidade e confiabilidade das soluções entregues. Requisitos e Experiência Experiência com Kotlin ou Java, Spring Boot e Microsserviços; Experiência em automação de testes unitário e integração; Conhecimento em banco de dados PostgreSQL, Banco de dados não relacional como MongoDB e Cassandra; Conhecimento em ferramentas de mensageria como Kafka, SQS e SNS, para integração e comunicação eficiente entre sistemas distribuídos; Conhecimento com padrões de observabilidade; Conhecimento com Cloud; Conhecimento de protocolos de segurança; Conhecimento com Infraestrutura como código; Expertise em agilidade e com boas práticas de melhoria contínua; Conhecimento em fluxos transacionais de alta criticidade; Conhecimento do conceito de event driven e tratamento de fluxos assíncronos. Nossos Benefícios Vale-Refeição; Vale-Alimentação; Plano de saúde e odontológico; Auxílio-Creche; Seguro de Vida; WellHub | TotalPass; Conexa | Psicologia Viva - Terapia online sem custo; Carbon Academy; Cartão C6 Carbon; Carbon Spa - Salão de beleza localizado em nosso escritório; Carbon Care - Ambulatório localizado em nosso escritório; Sala de amamentação; Empresa Cidadã - Prorrogação do prazo da licença-maternidade e licença-paternidade; Bicicletário; Vestiário; Van corporativa; Espaço de convivência - Videogame, mesa de sinuca, playball, churrasqueira, chopeira, lanchonete, diversos locais de descanso, redes, cesta de basquete e horta colaborativa e orgânica. C6 BANK PARA UMA VIDA EXTRAORDINÁRIA Atendemos pessoas físicas, MEIs e PMEs em todos os estados do Brasil. Sem agências físicas, oferecemos mais de 90 produtos e serviços financeiros feitos para todos os perfis de clientes. Estamos localizados em São Paulo/SP e contamos com mais de 3.000 CSixers que estão sempre a mil por hora. Em pouco mais de cinco anos, conquistamos muitos prêmios e reconhecimentos. No C6 Bank, acreditamos que a diversidade impulsiona a inovação e fortalece nosso ambiente de trabalho. Por isso, promovemos uma cultura inclusiva, que valoriza a equidade e garante oportunidades para todas as pessoas, independentemente de raça, cor, idade, credo, deficiência, nacionalidade, estado civil, orientação sexual, identidade ou expressão de gênero. Aqui, todo mundo é bem-vindo para ser quem é. Confira mais informações no vídeo abaixo:

Jobs at C6 Bank

PARA UMA VIDA EXTRAORDINÁRIA Venha fazer parte dessa revolução financeira! Desde 2018, somos o banco que revolucionou o mercado! Já…

You'll design and build the **Supabase Kotlin SDK**, including Auth, Database, Storage, Functions, and Realtime clients. … Your work will define **API conventions that feel idiomatic to Kotlin developers** and drive the SDK roadmap based on community feedback.

Supabase

Supabase Jobs

You'll join the Lifecycle team to **develop native Android apps with Kotlin and Jetpack Compose**, ensuring quality and performance.

Inter Carreiras

O que nos move é a inovação, e ela vem de pessoas. E cada pessoa que participa desse processo tem…

Nossa área de CRM Engineering A área é responsável por desenvolver e sustentar produtos e soluções de atendimento e relacionamento com clientes, utilizando plataformas como Salesforce, Marketing Cloud, Bots e URA. Atua na implementação, integração e evolução dessas soluções, garantindo eficiência, automação e escalabilidade. Seu foco é oferecer experiências ágeis, personalizadas e consistentes ao cliente, apoiando a estratégia digital do banco. Suas atividades como CSixer Conduzir a implantação completa do produto, abrangendo ambientes de Homologação, Produção e Deploy, garantindo entregas seguras e eficientes; Dominar a arquitetura e o design dos componentes do produto, compreendendo profundamente as decisões técnicas e justificativas que embasam cada escolha; Assegurar a qualidade do desenvolvimento, promovendo práticas de codificação robustas, revisão de código e mantendo alta cobertura de testes automatizados para garantir a estabilidade e confiabilidade das soluções entregues. Requisitos e Experiência Experiência com Kotlin ou Java, Spring Boot e Microsserviços; Experiência em automação de testes unitário e integração; Conhecimento em banco de dados PostgreSQL, Banco de dados não relacional como MongoDB; Conhecimento em ferramentas de mensageria como Kafka, SQS e SNS, para integração e comunicação eficiente entre sistemas distribuídos; Conhecimento com padrões de observabilidade; Conhecimento com Cloud - AWS, GCP, entre outros; Conhecimento de protocolos de segurança; Conhecimento com Infraestrutura como código; Expertise em agilidade e com boas práticas de melhoria contínua; Conhecimento em fluxos transacionais de alta criticidade; Conhecimento do conceito de event driven e tratamento de fluxos assíncronos; Desejável experiência no segmento financeiro. Nossos Benefícios Vale-Refeição; Vale-Alimentação; Plano de saúde e odontológico; Auxílio-Creche; Seguro de Vida; WellHub | TotalPass; Conexa | Psicologia Viva - Terapia online sem custo; Carbon Academy; Cartão C6 Carbon; Carbon Spa - Salão de beleza localizado em nosso escritório; Carbon Care - Ambulatório localizado em nosso escritório; Sala de amamentação; Empresa Cidadã - Prorrogação do prazo da licença-maternidade e licença-paternidade; Bicicletário; Vestiário; Van corporativa; Espaço de convivência - Videogame, mesa de sinuca, playball, churrasqueira, chopeira, lanchonete, diversos locais de descanso, redes, cesta de basquete e horta colaborativa e orgânica. C6 BANK PARA UMA VIDA EXTRAORDINÁRIA Atendemos pessoas físicas, MEIs e PMEs em todos os estados do Brasil. Sem agências físicas, oferecemos mais de 90 produtos e serviços financeiros feitos para todos os perfis de clientes. Estamos localizados em São Paulo/SP e contamos com mais de 3.000 CSixers que estão sempre a mil por hora. Em pouco mais de cinco anos, conquistamos muitos prêmios e reconhecimentos. No C6 Bank, acreditamos que a diversidade impulsiona a inovação e fortalece nosso ambiente de trabalho. Por isso, promovemos uma cultura inclusiva, que valoriza a equidade e garante oportunidades para todas as pessoas, independentemente de raça, cor, idade, credo, deficiência, nacionalidade, estado civil, orientação sexual, identidade ou expressão de gênero. Aqui, todo mundo é bem-vindo para ser quem é. Confira mais informações no vídeo abaixo:

Jobs at C6 Bank

PARA UMA VIDA EXTRAORDINÁRIA Venha fazer parte dessa revolução financeira! Desde 2018, somos o banco que revolucionou o mercado! Já…

Software Developers collaborate with Business and Quality Analysts, Designers, Project Managers and more to design software solutions that will create meaningful change for our clients. They listen thoughtfully to understand the context of a business problem and write clean and iterative code to deliver a powerful end result. By balancing strong opinions with a willingness to find the right answer, Software Developers bring integrity to technology, ensuring all voices are heard. At Thoughtworks, we believe in going above and beyond the standard and are committed to delivering best-in-class solutions that exceed our clients' expectations. Our standard engineering and delivery practices reflect our commitment to quality, and our team is always looking to innovate and improve. Job responsibilities You will learn and adopt best practices like writing clean and reusable code using TDD, pair programming and design patterns You will use continuous delivery practices as needed to deliver high-quality software and value to end customers You will work in collaborative, value-driven teams to build innovative customer experiences for our clients You will collaborate with a variety of teammates to build features, design concepts and interactive prototypes and ensure best practices and UX specifications are embedded along the way You will partner with other technologists from cross-functional teams advocating and demonstrating DevOps culture You will take ownership and accountability beyond individual deliverables, always pushing the envelope in order to deliver awesome results for our clients You will learn, digest and subsequently apply the latest technology thinking from our Technology Radar to solve client problems Job qualifications Technical Skills You have 3+ years of experience as a Fullstack Software Developer, with strong hands-on experience in Javascript (Node.js and React) . Experience working with object-oriented programming languages such as Java or Kotlin would be an advantage. You can write clean, high-quality code in a variety of languages and are also able to spot (and improve) bad code. You are familiar with Agile, Lean and/or Continuous Delivery. You have a good awareness of TDD, continuous integration and continuous delivery approaches/tools. Bonus points if you have knowledge of cloud technology such as AWS, Docker or Kubernetes. Professional Skills You thrive in a collaborative, non-hierarchical environment that values transparency, openness, feedback and change You have a passion for learning and sharing knowledge as well as a desire to create the right solutions for business problems You’re resilient in ambiguous situations and can approach challenges from multiple perspectives *For candidates with less than two years of experience, please visit the Grads and career changers page on our careers site. Other things to know Learning & Development There is no one-size-fits-all career path at Thoughtworks: however you want to develop your career is entirely up to you. But we also balance autonomy with the strength of our cultivation culture. This means your career is supported by interactive tools, numerous development programs and teammates who want to help you grow. We see value in helping each other be our best and that extends to empowering our employees in their career journeys. Commitment to Disability Inclusion Thoughtworks are committed to being an inclusive & accessible workplace employer of choice for all including those living with disability. What's on offer Our goal is to equip you with career defining experiences, to help you to grow professionally and personally, and to foster a community where you feel you belong. We're committed to making Thoughtworkers an employer of choice, and we offer a wide variety of benefits to support the teams' advancement, their health and wellbeing. If you're ready to find your home at Thoughtworks, click to apply now (even if you don't feel like you tick all the boxes). About Thoughtworks Thoughtworks is a global technology consultancy that integrates strategy, design and engineering to drive digital innovation. For 30+ years, our clients have trusted our autonomous teams to build solutions that look past the obvious. Here, computer science grads come together with seasoned technologists, self-taught developers, midlife career changers and more to learn from and challenge each other. Career journeys flourish with the strength of our cultivation culture, which has won numerous awards around the world. Join Thoughtworks and thrive. Together, our extra curiosity, innovation, passion and dedication overcomes ordinary. #LI-Remote See here our AI policy.

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Looking for a place where your brilliance and passion can shape the future of technology? Join us to create world-changing…

We lcome to DKB Code Factory…. { { … a_place_to_stay_yourself: } } ; { { … a_place_to_stay_curious: Let’s build banking that works for people, one clean line of code at a time. At DKB Code Factory , we’re building the mobile banking app that small and mid-sized businesses actually need. As an A ndroid Developer , you’ll help lay the technical foundation of a scalable, user-centric product; using modern Android technologies, shaping standards, and growing alongside a collaborative, curious team. } } ; { your_responsibilities: [ Design and implement a modular, scalable Android architecture using MVVM, Jetpack Compose, and Kotlin Coroutines. Collaborate with cross-functional teams to audit and reuse shared components, accelerating development. Establish and maintain CI/CD pipelines, automated testing, and documentation to support a growing team. Deliver 80% of prioritized MVP user flows integrated with backend APIs. Ensure high code quality with rigorous testing standards and continuous improvement. Lead iterative product development cycles driven by user feedback and analytics. ] } ; { following_qualifications_would_be_in_line_with_our_desired_profile_for_this_position: [ Native Android development experience using Kotlin and Java. Strong knowledge of Jetpack Compose and Android architecture components. Experience with RESTful APIs, Git, CI/CD, and automated testing frameworks (JUnit, Espresso). Understanding of Material Design guidelines and app deployment on Google Play Store. Agile and Scrum experience in cross-functional teams. Fluent in English; Spanish language skills are a plus. ] } ; Have the feeling you don't match every single requirement? Don’t worry! We encourage you to apply anyways, even if your qualifications do not align perfectly. You might still be just the right candidate for us! { { … a_place_to_stay_together: From Morning Daily to Afterwork Drink, team spirit is essential to us. The heart of our togetherness is that we truly are connected with each other: We not only share fun & laughter, but also honest opinions - because that's how we grow: We exchange ideas, give support in our personal development, and celebrate success together! Besides our great community, we also offer numerous other benefits ... } } ;

Jobs at DKB Code Factory

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You'll **build secure mobile banking features** for millions of customers using **Kotlin and Jetpack Compose**.

Jobs at DKB Code Factory

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About Lendable Lendable is on a mission to build the world's best technology to help people get credit and save money. We're building one of the world’s leading fintech companies and are off to a strong start: One of the UK’s newest unicorns with a team of just over 700 people Among the fastest-growing tech companies in the UK Profitable since 2017 Backed by top investors including Balderton Capital and Goldman Sachs Loved by customers with the best reviews in the market (4.9 across 10,000s of reviews on Trustpilot ) So far, we’ve rebuilt the Big Three consumer finance products from scratch: loans, credit cards and car finance . We get money into our customers’ hands in minutes instead of days. We’re growing fast, and there’s a lot more to do: we’re going after the two biggest Western markets (UK and US) where trillions worth of financial products are held by big banks with dated systems and painful processes. Join us if you want to Take ownership across a broad remit. You are trusted to make decisions that drive a material impact on the direction and success of Lendable from day 1 Work in small teams of exceptional people, who are relentlessly resourceful to solve problems and find smarter solutions than the status quo Build the best technology in-house , using new data sources, machine learning and AI to make machines do the heavy lifting About the role As we continue to build upon the diversity of our team we are thrilled to have the opportunity to bring on board a Senior Kotlin/JVM Engineer. This is an opportunity to bring new experience, perspective and capabilities to our design discussions, helping shape our approach to delivering elegant solutions to complex engineering challenges as we continue to grow. This is the team that put the Tech in FinTech, our current tech team is around 80 strong and have helped transform finance by building a next-generation lending platform, a next-gen credit card, and auto-finance product, a Superapp and they’re at it again with brand new product launches this year. We're looking for an engineer with a depth of knowledge and recent hands-on Kotlin experience or JVM based engineering experience that enables them to not only deliver elegant, idiomatic solutions in Kotlin or Java but also to contribute new knowledge and experience to our frequent collaborative design forums with stakeholders from every area of the business. There’s a lot to do; building and integrating new API’s, tuning our existing services as they scale, supporting our expansion of new products and supporting services in the US. We believe that software engineering is more than just code - it’s about people. We believe that the best teams are made of great people. That fundamentally great software engineering is about alignment, sharing what we know and being nice to each other. When we put all this together we make software engineering better by continually improving our capabilities as a team and making our working environment a happy and productive place. There is more to read about us and our Lendies in the engineering blog right here and if you’d like to check our reviews out on Glassdoor you can see these here . Our Tech Stack Backend Kotlin 1.7.20 AWS GraphQL (it would be nice if you were familiar with this but it’s not a deal breaker) Postgres RabbitMQ Docker Kubernetes Frontend React & React Native, TypeScript, MobX, Redux, Stylus and SASS Other We build our Kotlin projects using Gradle and GitHub Actions, deploying to production as soon as we finish a feature We use JUnit Jupiter, Kotest and TestContainers for automated testing What we’re looking for technically Strong commercial Kotlin or JVM based engineering experience (willingness to work with Kotlin) An ability to write simple, clean code Experience and understanding of databases; relational databases are a must, NoSql would be nice too Be able to quickly understand complex, financial business domains Understand different software architectures rapidly Understands abstraction and interpolation Able to write comprehensive, automated tests at all levels of the pyramid Understanding of the Kanban agile methodology; not a deal breaker if you don’t What kind of person you’ll need to be Someone who can get along with others and build relationships Someone who wants to continually learn, improve and collaborate Someone who can solve problems on their own but also knows when to go to their peers for help Someone who is a rational thinker and is aware of the ‘why’ behind the way they do things Someone who is a pragmatist who can sensibly weigh the tradeoffs between code quality and delivery Life at Lendable The opportunity to scale up one of the world’s most successful fintech companies . Best-in-class compensation , including equity. You can work from home every Monday and Friday if you wish - on the other days, those based in the UK come together IRL at our Shoreditch office in London to be together, build and exchange ideas. Enjoy a fully stocked kitchen with everything you need to whip up breakfast, lunch, snacks, and drinks in the office every Tuesday-Thursday. We care for our Lendies’ well-being both physically and mentally, so we offer coverage when it comes to private health insurance We're an equal-opportunity employer and are looking to make Lendable the most inclusive and open workspace in London Check out our blog !

Lendable

Lendable Jobs

You'll build exceptional Android products using **Kotlin** and **modern Android frameworks**.

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Nossa área de Investments Engineering A área é responsável por desenvolver e evoluir produtos de investimento, como renda fixa, renda variável e fundos, garantindo soluções digitais seguras, escaláveis e de alta performance. Atua no ciclo completo de desenvolvimento, da concepção ao deploy, aplicando boas práticas de engenharia e arquitetura modernas. Seu foco é entregar produtos inovadores que ampliem a eficiência, a transparência e a experiência dos clientes no banco. Suas atividades como CSixer Liderar o ciclo completo de desenvolvimento de software desde a concepção até o deploy em ambientes de homologação e produção com foco em entregas robustas, seguras e contínuas. Atuar como referência técnica dentro da squad, garantindo a qualidade, performance e resiliência dos serviços relacionados á transações financeiras. Conduzir decisões de arquitetura e engenharia, entendendo profundamente os trade-offs técnicos e orientando o time na escolha de soluções escaláveis e seguras. Promover excelência no desenvolvimento com práticas avançadas como TDD/BDD, code reviews, clean code, DDD e alta cobertura de testes automatizados. Participar ativamente da sustentação dos sistemas em produção, atuando com foco em observabilidade, monitoramento e respostas rápidas a incidentes de missão crítica. Colaborar com áreas de negócio, produto e tecnologia, contribuindo com visão técnica estratégica para evolução da jornada do usuário no banco. Requisitos e Experiência Domínio de linguagens como Kotlin ou Java com experiência sólida em frameworks como Spring Boot. Proficiência em arquitetura de microsserviços, incluindo padrões de comunicação, resiliência, versionamento de APIs e deploy contínuo. Experiência aprofundada com automação de testes, incluindo testes unitários, de integração e de contrato, garantindo alta cobertura e confiança nas entregas. Domínio de bancos de dados relacionais e não relacionais, especialmente PostgreSQL e MongoDB com foco em performance e consistência. Vivência com sistemas de mensageria como Kafka, SQS e SNS, aplicando padrões de comunicação assíncrona em larga escala. Familiaridade avançada com padrões de observabilidade, incluindo métricas, logs estruturados e tracing distribuído. Experiência prática em ambientes Cloud (preferencialmente AWS) com uso de Infraestrutura como Código (Terraform ou CloudFormation) e pipelines CI/CD. Sólido entendimento de protocolos de segurança, autenticação/autorização (JWT, OAuth2), criptografia e práticas de desenvolvimento seguro. Atuação em ambientes ágeis com foco em entregas frequentes, métricas e cultura DevOps. Desejável experiência com produtos de investimentos ou produtos financeiros. Nossos Benefícios Vale-Refeição; Vale-Alimentação; Plano de saúde e odontológico; Auxílio-Creche; Seguro de Vida; WellHub | TotalPass; Conexa | Psicologia Viva - Terapia online sem custo; Carbon Academy; Cartão C6 Carbon; Carbon Spa - Salão de beleza localizado em nosso escritório; Carbon Care - Ambulatório localizado em nosso escritório; Sala de amamentação; Empresa Cidadã - Prorrogação do prazo da licença-maternidade e licença-paternidade; Bicicletário; Vestiário; Van corporativa; Espaço de convivência - Videogame, mesa de sinuca, playball, churrasqueira, chopeira, lanchonete, diversos locais de descanso, redes, cesta de basquete e horta colaborativa e orgânica. C6 BANK PARA UMA VIDA EXTRAORDINÁRIA Atendemos pessoas físicas, MEIs e PMEs em todos os estados do Brasil. Sem agências físicas, oferecemos mais de 90 produtos e serviços financeiros feitos para todos os perfis de clientes. Estamos localizados em São Paulo/SP e contamos com mais de 3.000 CSixers que estão sempre a mil por hora. Em pouco mais de cinco anos, conquistamos muitos prêmios e reconhecimentos. No C6 Bank, acreditamos que a diversidade impulsiona a inovação e fortalece nosso ambiente de trabalho. Por isso, promovemos uma cultura inclusiva, que valoriza a equidade e garante oportunidades para todas as pessoas, independentemente de raça, cor, idade, credo, deficiência, nacionalidade, estado civil, orientação sexual, identidade ou expressão de gênero. Aqui, todo mundo é bem-vindo para ser quem é. Confira mais informações no vídeo abaixo:

Jobs at C6 Bank

PARA UMA VIDA EXTRAORDINÁRIA Venha fazer parte dessa revolução financeira! Desde 2018, somos o banco que revolucionou o mercado! Já…

The mission of Speechify is to make sure that reading is never a barrier to learning. Over 50 million people use Speechify’s text-to-speech products to turn whatever they’re reading – PDFs, books, Google Docs, news articles, websites – into audio, so they can read faster, read more, and remember more. Speechify’s text-to-speech reading products include its iOS app, Android App, Mac App, Chrome Extension, and Web App. Google recently named Speechify the Chrome Extension of the Year and Apple named Speechify its Design award winner for inclusivity for 2025. Today, nearly 200 people around the globe work on Speechify in a 100% distributed setting – Speechify has no office. These include frontend and backend engineers, AI research scientists, and others from Amazon, Microsoft, and Google, leading PhD programs like Stanford, high growth startups like Stripe, Vercel, Bolt, and many founders of their own companies. Overview With the growth of our Android app, being the most used text-to-speech app in the Play Store, we find the need for a Senior Android Engineer to help us support the new user base as well as work on new and exciting projects to push us forward. This is a key role and ideal for someone who thinks strategically, enjoys fast-paced environments, passionate about making product decisions, and has experience building great user experiences that delight users. We are a flat organization that allows anyone to become a leader by showing excellent technical skills and delivering results consistently and fast. Work ethic, solid communication skills, and obsession with winning are paramount. Our interview process involves several technical interviews and we aim to complete them within 1 week. What Yo u’ ll Do Owning major features and working closely with our design team - take ownership of features inside the app and become responsible of delivering high quality features Shape the future of our Android team Own, maintain and improve reliability metrics for key features Participate in discussions across different teams - Product, Design, Engineering Review pull requests, and support other teammates Handle critical issues or cope with unexpected challenges Take ownership of feature releases and provide nightly builds for the QA team An Ideal Candidate Should Have 5+ years of software engineering experience Familiarity with Android components Experience building or contributing to at least one Android app Product design intuition and user empathy Drive to push the boundaries of Android UI/UX Understanding of the importance of tests and how to approach writing tests Self-drive to improve the app and codebase above and beyond what's outlined in the spec Rock solid experience with Kotlin, Kotlin Coroutines, Kotlin Flow, Dagger 2, MVVM, Clean Architecture, Background Services, Music Player Service, Android Animations, Jetpack Navigation, JUnit tests Excellent communication skills User oriented problem solving approach Driven with continuous feedback from leaders Bonus: Experience building, maintaining, or otherwise contributing to open source projects in Android Experience with iOS, Web or NodeJS Technologies we use: Kotlin Kotlin Coroutines Kotlin Flow Jetpack Navigation Dagger 2 Room Custom Views, Canvas & Paint Jetpack Compose JUnit What We offer : A fast-growing environment where you can help shape the company and product. An entrepreneurial-minded team that supports risk, intuition, and hustle. A hands-off management approach so you can focus and do your best work. An opportunity to make a big impact in a transformative industry. Competitive salaries, a friendly and laid-back atmosphere, and a commitment to building a great asynchronous culture. Opportunity to work on a life-changing product that millions of people use. Build products that directly impact and support people with learning differences like dyslexia, ADD, low vision, concussions, autism, and more. Work in one of the fastest growing sectors of tech, the intersection of artificial intelligence and audio. The United States Based Salary range for this role is: 140,000-200,000 USD/Year + Bonus + Stock depending on experience Think you’re a good fit for this job? Tell us more about yourself and why you're interested in the role when you apply. And don’t forget to include links to your portfolio and LinkedIn. Not looking but know someone who would make a great fit? Refer them! Speechify is committed to a diverse and inclusive workplace. Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.

Speechify

AI text-to-speech reader

The mission of Speechify is to make sure that reading is never a barrier to learning. Over 50 million people use Speechify’s text-to-speech products to turn whatever they’re reading – PDFs, books, Google Docs, news articles, websites – into audio, so they can read faster, read more, and remember more. Speechify’s text-to-speech reading products include its iOS app, Android App, Mac App, Chrome Extension, and Web App. Google recently named Speechify the Chrome Extension of the Year and Apple named Speechify its Design award winner for inclusivity for 2025. Today, nearly 200 people around the globe work on Speechify in a 100% distributed setting – Speechify has no office. These include frontend and backend engineers, AI research scientists, and others from Amazon, Microsoft, and Google, leading PhD programs like Stanford, high growth startups like Stripe, Vercel, Bolt, and many founders of their own companies. Overview With the growth of our Android app, being the most used text-to-speech app in the Play Store, we find the need for a Senior Android Engineer to help us support the new user base as well as work on new and exciting projects to push us forward. This is a key role and ideal for someone who thinks strategically, enjoys fast-paced environments, passionate about making product decisions, and has experience building great user experiences that delight users. We are a flat organization that allows anyone to become a leader by showing excellent technical skills and delivering results consistently and fast. Work ethic, solid communication skills, and obsession with winning are paramount. Our interview process involves several technical interviews and we aim to complete them within 1 week. What Yo u’ ll Do Owning major features and working closely with our design team - take ownership of features inside the app and become responsible of delivering high quality features Shape the future of our Android team Own, maintain and improve reliability metrics for key features Participate in discussions across different teams - Product, Design, Engineering Review pull requests, and support other teammates Handle critical issues or cope with unexpected challenges Take ownership of feature releases and provide nightly builds for the QA team An Ideal Candidate Should Have 5+ years of software engineering experience Familiarity with Android components Experience building or contributing to at least one Android app Product design intuition and user empathy Drive to push the boundaries of Android UI/UX Understanding of the importance of tests and how to approach writing tests Self-drive to improve the app and codebase above and beyond what's outlined in the spec Rock solid experience with Kotlin, Kotlin Coroutines, Kotlin Flow, Dagger 2, MVVM, Clean Architecture, Background Services, Music Player Service, Android Animations, Jetpack Navigation, JUnit tests Excellent communication skills User oriented problem solving approach Driven with continuous feedback from leaders Bonus: Experience building, maintaining, or otherwise contributing to open source projects in Android Experience with iOS, Web or NodeJS Technologies we use: Kotlin Kotlin Coroutines Kotlin Flow Jetpack Navigation Dagger 2 Room Custom Views, Canvas & Paint Jetpack Compose JUnit What We offer : A fast-growing environment where you can help shape the company and product. An entrepreneurial-minded team that supports risk, intuition, and hustle. A hands-off management approach so you can focus and do your best work. An opportunity to make a big impact in a transformative industry. Competitive salaries, a friendly and laid-back atmosphere, and a commitment to building a great asynchronous culture. Opportunity to work on a life-changing product that millions of people use. Build products that directly impact and support people with learning differences like dyslexia, ADD, low vision, concussions, autism, and more. Work in one of the fastest growing sectors of tech, the intersection of artificial intelligence and audio. The Denmark Based Salary range for this role is: 30,000-120,000 USD/Year + Bonus + Stock depending on experience. Think you’re a good fit for this job? Tell us more about yourself and why you're interested in the role when you apply. And don’t forget to include links to your portfolio and LinkedIn. Not looking but know someone who would make a great fit? Refer them! Speechify is committed to a diverse and inclusive workplace. Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.

Speechify

AI text-to-speech reader

Nossa área de Tecnologia Responsável pelo desenvolvimento de produtos e soluções inovadoras para o setor bancário, buscando sempre utilizar as tecnologias de ponta empregadas no mercado. Além disto, está diretamente relacionado com soluções que promovem maior facilidade, agilidade e segurança para os clientes do banco. Suas atividades como CSixer Implantar End-to-End (Homologação, Produção e Deploy)​; Conhecer os detalhes de arquitetura e design dos componentes do seu produto, sabendo os motivos que levaram a cada escolha; Garantir desenvolvimento de códigos com qualidade e cobertura de testes automatizados. Requisitos e experiência Experiência com Kotlin, Java, SpringBoot e Microserviços; Experiência em automação de testes unitário e integração; Conhecimento em banco de dados PostgreSQL, Banco de dados não relacional como MongoDB e Cassandra; Expertise em agilidade e com boas práticas de melhoria contínua. Disponibilidade para atuar no modelo 100% presencial em nosso escritório em São Paulo. Nossos benefícios Vale-Refeição; Vale-Alimentação; Plano de saúde e odontológico; Auxílio-Creche; Seguro de Vida; WellHub | TotalPass; Conexa | Psicologia Viva - Terapia online sem custo; Carbon Academy; Cartão C6 Carbon; Carbon Spa - Salão de beleza localizado em nosso escritório; Carbon Care - Ambulatório localizado em nosso escritório; Sala de amamentação; Empresa Cidadã - Prorrogação do prazo da licença-maternidade e licença-paternidade; Bicicletário; Vestiário; Van corporativa; Espaço de convivência - Videogame, mesa de sinuca, playball, churrasqueira, chopeira, lanchonete, diversos locais de descanso, redes, cesta de basquete e horta colaborativa e orgânica. C6 BANK PARA UMA VIDA EXTRAORDINÁRIA Atendemos pessoas físicas, MEIs e PMEs em todos os estados do Brasil. Sem agências físicas, oferecemos mais de 90 produtos e serviços financeiros feitos para todos os perfis de clientes. Estamos localizados em São Paulo/SP e contamos com mais de 3.000 CSixers que estão sempre a mil por hora. Em pouco mais de cinco anos, conquistamos muitos prêmios e reconhecimentos. No C6 Bank, acreditamos que a diversidade impulsiona a inovação e fortalece nosso ambiente de trabalho. Por isso, promovemos uma cultura inclusiva, que valoriza a equidade e garante oportunidades para todas as pessoas, independentemente de raça, cor, idade, credo, deficiência, nacionalidade, estado civil, orientação sexual, identidade ou expressão de gênero. Aqui, todo mundo é bem-vindo para ser quem é. Confira mais informações no vídeo abaixo:

Jobs at C6 Bank

PARA UMA VIDA EXTRAORDINÁRIA Venha fazer parte dessa revolução financeira! Desde 2018, somos o banco que revolucionou o mercado! Já…