Develop and maintain the core Rails application with a focus on code health, modern patterns, and long-term stability
Lead technical implementation for complex projects within 6-week cycles, taking ownership from architectural design to shipping
Build pragmatic connections between the Rails monolith and satellite TypeScript/GCP services (Pub/Sub, Cloud Functions) without over-engineering
Proactively identify and resolve friction in tooling, CI/CD, and local environments to ensure the codebase remains enjoyable to work in
Drive high-quality async collaboration through clear documentation, architectural decision records and comprehensive code reviews

proven experience in writing maintainable, self-describing, reusable and testable code with Rails and other major back-end or full-stack technologies in several past projects
experience designing and maintaining RESTful APIs
experience with measuring and improving performance
an agile and result-oriented mindset and a passion to support your team colleagues
interest or experience in human-centered software development
excellent knowledge of spoken and written English, German is a plus
residency in Germany

You are part of an international, dynamic, and highly motivated team of people who have proven to make things happen
With your work, you accelerate the "energy transition" and hence have a direct impact on our climate
Work with and learn from other super-smart colleagues
You will enjoy direct contact with core decision-makers
You will enjoy the best chances of entering full-time in one of Europe’s most thriving scaleups
You work remotely (Germany-wide), with offices in Hamburg, Berlin or Munich
Create a healthy balance alongside your work and enjoy all the benefits of the EGYM Wellpass
Benefits and discounts are yours with Futurebens
Whether city bike or e-bike
be flexible with our job bike leasing and do something good for the environment at the same time

Senior Fullstack Software Engineer – Ruby, Typescript

Key skills