Senior Software Engineer - Ruby on Rails (f/m/d)
About this role
Are you ready to change the market?At PAIR Finance we're building the AI-driven platform that's redefining debt collection across Europe. We're looking for a senior software engineer who takes ownership end-to-end, is comfortable being the technical driver of a well-defined scope, and is energized by learning a deep, high-stakes domain: the legal processes around In-Court and After-Court debt collection.
Your Responsibilities: • Own a clear scope end-to-end: take initiative from idea to production largely independently, and lead within your team (T-shaped: you go deep on your slice, and pair with one other developer)
Design, build, and run POCs quickly to de-risk decisions before committing to a full build
Develop, optimize, and maintain our core backend applications and services
Work on high-level architecture to ensure scalability, performance, availability, and security
Go deep on the In-Court/After-Court domain (the legal and procedural knowledge behind our
collection processes is a core part of the job, not a side detail)
Collaborate closely with product to shape the roadmap and unlock further company growth
Work AI-augmented: you already use (or are ready to adopt) tools like Claude Code as part of how you build, review, and ship
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Responsibilities
- Design, build, and run POCs quickly to de-risk decisions before committing to a full build
- Develop, optimize, and maintain our core backend applications and services
- Work on high-level architecture to ensure scalability, performance, availability, and security
Requirements
- Go deep on the In-Court/After-Court domain (the legal and procedural knowledge behind our
- Collaborate closely with product to shape the roadmap and unlock further company growth
- Work AI-augmented: you already use (or are ready to adopt) tools like Claude Code as part of how you build, review, and ship