Backend Engineer

The Role

As a Backend Engineer, you will design and build the systems powering payments, settlement, transaction routing and asset conversion across multiple networks and providers.

You’ll work on high-performance APIs and distributed backend services, contribute to core architectural decisions, and build new systems from the ground up in a fast-moving engineering environment.

What You'll Do

• Design, build and maintain high-performance APIs and backend services.
• Build systems supporting payments, settlement, transaction routing, asset conversion and identity/security flows.
• Develop infrastructure capable of operating reliably across multiple networks and providers.
• Build new backend capabilities that improve product performance, conversion and reliability.
• Participate in system design, architecture reviews and technical decision-making.
• Improve the scalability, reliability and fault tolerance of production systems.
• Contribute to incident response, code reviews, testing and engineering standards.
• Take ownership of projects from initial design through production deployment.

Who We're Looking For

• Strong experience building production backend systems using a modern programming language.
• Proficiency in TypeScript, or strong experience with Go or Rust and a clear willingness to work primarily in TypeScript.
• Deep understanding of distributed systems, API design and database architecture.
• Hands-on experience with cloud infrastructure, Docker, Kubernetes or comparable containerized environments.
• Strong computer science fundamentals across algorithms, data structures and systems design.
• Ability to take ownership and build effectively with limited scaffolding in a fast-moving environment.
• Comfortable working through ambiguity and solving complex engineering problems independently.

Nice to Have

• Experience building payment, settlement, transaction routing or other high-volume transactional systems.
• Experience with blockchain, Web3 or other distributed financial infrastructure.
• Experience building products or systems from zero rather than primarily maintaining established platforms.
• Previous experience in a startup or highly autonomous engineering environment.

About Swiss Nexus

Swiss Nexus is a Switzerland-based specialist talent partner working across blockchain, Web3 and fintech. We connect ambitious companies with hard-to-find engineering, product, commercial, compliance and leadership talent across Switzerland and globally.