14h ago

Senior Software Engineer - Payments

Portugal

$100k-$150k / yearest.

full-timemid Remote

🛠 Tech Stack

💼 About This Role

You'll build a high-throughput multi-tenant payments platform processing deposits, withdrawals, and settlements. You'll own third-party integrations and improve authentication flows for reliability. This role offers deep technical ownership in a fintech/iGaming environment.

🎯 What You'll Do

  • Design and implement backend services for payment flows.
  • Develop frontend components for deposit and withdrawal experiences.
  • Own end-to-end third-party payment and supplier integrations.
  • Implement secure authentication, webhook validation, and callback handling.

📋 Requirements

  • 4+ years as a Full Stack Engineer on backend and frontend systems.
  • Strong experience building APIs and transactional backend services.
  • Proven experience integrating third-party APIs, ideally payment or financial services.
  • iGaming, fintech, or high-transaction system experience required.

✨ Nice to Have

  • Experience with cryptographic key management or wallet abstractions.
  • Background in fintech, DeFi, or crypto exchange infrastructure.
  • Familiarity with event-driven systems, Kafka, or message queues.

🎁 Benefits & Perks

  • 🏖️ Remote-first culture.
  • 💻 Cutting-edge tech stack with Go, TypeScript, React.
  • 📈 Ownership of high-impact payment infrastructure.

🚩 Heads Up

  • Experience in iGaming required despite title not mentioning industry
  • Mentions senior engineer but experience level matches mid (4+ years)
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