Antithesis

You'll manage **endpoint infrastructure** and **network systems** at a deep-tech reliability company. Your work will keep engineers productive and secure as the company scales. You'll have full ownership of IT processes in a **fast-paced, high-growth environment**.

You'll own the **Property-Based Testing (PBT) and Specification product area** at Antithesis, a startup building a novel software testing platform. Your work will define **how customers expose their software** and specify expected behavior, directly shaping a high-ambiguity 0→1 product. This role offers **deep technical collaboration** with world experts on PBT.

You'll join Antithesis to handle complex support requests for a developer-first platform focused on system resilience. You'll own cases end-to-end and escalate novel issues. This role offers the chance to **shape the support strategy** and work with **cutting-edge distributed systems**.

You'll design and scale secure cloud infrastructure for a developer-first platform that improves system reliability. You'll operate at the intersection of **infrastructure, security, and reliability** to protect customer environments. This role offers the chance to build **multi-tenant isolated environments** and define security foundations for a growing company.

You'll execute **Proof-of-Concept engagements** to demonstrate product value to customers and **find bugs in open source software** using the Antithesis platform. You'll support sales with technical qualifications and lead **customer workshops on property-based testing**.

You'll work directly with customers to test their **mission-critical applications** using our **cutting-edge platform**. You'll solve complex software problems and **enable reliable, on-time shipping**. No two days are the same as you tackle customer bugs, develop new techniques, and shape product direction.

You'll **manage office operations** and support a **collaborative deep tech team**. Your work ensures a **productive and welcoming workplace** for all employees.

You'll **lead technical discovery** for customer Kubernetes deployments and **drive Proof-of-Concept engagements** that demonstrate Antithesis's value. You'll **optimize Kubernetes setups** within the simulation environment and enable the broader team through training and best practices.

You'll own core **Fuzzer functionality**, orchestrating exploration and chaos injection in deterministic simulations. You'll make the Fuzzer **smarter by improving search efficiency and coverage**. This is a chance to solve one of the most **consequential problems in software reliability**.

You'll own major product areas in a **high-ambiguity, 0→1 environment** at Antithesis, a startup building a novel software testing platform. Your core impact will be shaping workflows, prioritization, and success metrics while partnering deeply with engineering on **complex technical systems**. You'll help define the product function from scratch in a deeply technical company.

You'll work on **Bombadil**, an open-source autonomous testing project. Your core impact includes **maintaining the specification language and verifier** and **improving Chromium automation**. You'll dive deep across multiple domains, from parsers to frontend.

You'll build and operate a full Go-To-Market systems stack, integrating SaaS tools and custom solutions to ensure data quality and automation. You'll partner with Sales, CS, and Marketing to create the operational backbone of a fast-growing startup. Success here has measurable revenue impact with compensation upside.

You'll execute Proof-of-Concept engagements and **lead customer workshops** around Property-based Testing. You'll find bugs and **break open source software** to demonstrate the platform's value. This role requires some travel and offers the chance to work with a **highly skilled team** in a fast-paced startup.

You'll design and build **core platform systems** for a deterministic simulation platform that finds bugs automatically. Your work will have **direct impact on software reliability** in the age of AI-generated code.

You'll join a deeply technical team building a platform that **enables engineering teams to identify and resolve bugs** through deterministic simulation. Your work will directly impact software reliability for modern engineering teams. **You'll build across the full stack** and tackle complex problems in autonomous testing.

You'll work directly with customers to understand their complex distributed systems and help them thoroughly test mission-critical applications using our cutting-edge platform. You'll solve **difficult technical problems** and present results to customer leadership. No two days are the same: one day onsite resolving a high priority bug, the next collaborating on a new testing technique.

You'll lead a team of engineers working on **deterministic simulation** for software reliability. Your core impact is shaping architecture and driving execution on complex projects. This role stands out because you'll write and review code alongside mentoring your team, not just managing.

You'll lead the London office and team for Property-Based Testing at Antithesis, working on **Hegel** and **Bombadil** products. You'll shape architecture, write code, and set technical standards while bridging London and Virginia teams. This is a rare chance to **build a new office from scratch** and solve the verification bottleneck for software reliability.

You'll build **property-based testing libraries** for the Hegel project, enabling developers to find bugs through **deterministic simulation**. Your work will help solve the verification bottleneck in an AI-driven world. You'll collaborate with a deeply technical team on open-source tools that **set new standards for software reliability**.

You'll deploy the **Antithesis platform** to find bugs and break customers' software. You'll articulate and convince future customers about a **new paradigm of software testing**. You'll work in a **startup environment** with tight timelines.

You'll build and run our compliance program end-to-end, owning the GRC calendar, Vanta instance, policy library, and audit evidence. You'll unblock enterprise deals by turning around security questionnaires quickly. This role combines operational compliance with a sales-forward mindset to earn customer trust.

You'll own the **full employee lifecycle** from onboarding to offboarding and manage **benefits administration** end-to-end. You'll be a trusted resource for employees and partner closely with the VP of People to build a culture people want to be part of. This is a hands-on, mid-level role at a well-funded tech company reinventing software reliability.

You'll own **full-cycle recruiting** for technical and non-technical roles at a deep-tech startup. You'll find, engage, and close exceptional talent in competitive markets, flexing across hyper-technical and generalist requisitions. This role offers a chance to **shape hiring culture** in a well-funded, fast-growing company.