Senior Software Engineer - Ruby on Rails (f/m/d)

Responsibilities

• Own a clear scope end-to-e
• to ensure scalability, performance, availability, and security
• Go deep on the In-Court/After-Court domain
• Collaborate closely with product
• to shape the roadmap and unlock further company growth

Requirements

• of professional software engineering experience, including 1+ year on medium-to-large
• communication skills

Preferred

• Experience in the
• Frontend development experience, especially
• Vue.js and GraphQL

nd

• 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

(the legal and procedural knowledge behind our collection processes is a core part of the job, not a side detail)

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 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

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

Nice to have

financial or accounting industry 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

• Strong experienced international team to support and mentor you along the way, smooth onboarding process
• International team of 30+ nationalities with professionals and experts
• Flat hierarchy, transparent and appreciative feedback culture, monthly all hands meetings, annual feedback and evaluation cycle, regular 1-on-1s with your lead
• Well-structured onboarding process as well as supportive and welcoming colleagues
• Personal learning & development budget as well as German and English language courses
• Unlimited employment contract, flexible working hours and 28 vacation days for your work-life balance
• Company pension plan, partly covered Deutschlandticket (public transport) and access to “Corporate Benefits”-voucher platform to ensure your full well-being
• Fun company summer and Christmas parties as well as regular team events

This role is based in

• Berlin, and we have a hybrid working policy. Modern office near Uhlandstr. is complete with fresh fruit, muesli and drinks for a comfortable and enjoyable workplace
• Who is your contact person?

Your contact person for this position is

• Geneva Brooks. If you have any questions, please contact us directly by email (jobs@pairfinance.com) - we look forward to hearing from you!
• For more information about PAIR Finance, please take a look at our website and our careers page