Senior Software Engineer

Vor 1 Tag

Berlin, Deutschland PAIR Finance GmbH Vollzeit

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: 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 domain (the legal and procedural knowledge behind our 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
  • Help evolve and enhance our AI-based platform
  • Stay current with industry trends and bring ideas back to the team

What we're looking for:

  • 5+ years of professional software engineering experience, including 1+ year on medium-to-large
    projects
  • Strong backend experience in Ruby (Ruby on Rails): this is our core stack, and required for the
    role
  • Language-agnostic mindset: you pick the right tool for the job (hands-on experience with Go and/or Python is a big plus)
  • Proven ability to work independently: scope, drive, and deliver a project with minimal hand-holding
  • Experience with TDD and CI/CD
  • A track record of writing clean, maintainable backend code and solid infrastructure
  • Comfortable in an Agile environment (Scrum, Kanban)
  • Genuine interest in working with, and building on top of, AI-based technologies
  • Solid English communication skills
Nice to have:
  • Experience in the financial or accounting industry
  • Frontend development experience, especially Vue.js and GraphQL knowledge
  • Infrastructure experience: AWS, Terraform (IaC), Docker, Linux
  • Knowledge of other backend technologies, such as Node.js, Rust, or Java

Our offer for you:

  • For this senior-level role, our salary band is €77,000 - €90,000 gross per year (based on a 40-hour work week). The exact offer will reflect your experience and qualifications
  • We offer visa sponsorship
  • Thriving, financially stable company