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

Intro We're building the first developer intelligence platform that helps organizations truly understand and enhance their developer experience. Beyond metrics, we focus on human insights that guide the way for change. As our first engineer, you'll work directly with our founding team - a veteran CTO and experienced Venture Builder - to architect and scale our platform from zero to one. We value real-world experience and pragmatic problem-solving. We're looking for someone who shares our vision of transforming how engineering teams understand and improve their work. If you're passionate about building elegant yet practical solutions and want to join an ambitious team reshaping developer productivity, let's talk. Tasks Own and shape core features end-to-end, from ideation to production Design our technical foundation and infrastructure for rapid growth Make key architectural decisions that will define our tech trajectory Ship high-quality, tested code that sets standards for the team Join building and leading our engineering team from the ground up Work directly with founders to shape product vision and strategy Requirements Must-Have Proven track record shipping production systems Deep expertise in full-stack development (5+ years, Rails focus) History of taking ownership and driving technical excellence Strong product instincts and user-centric thinking Professional fluency in English or German Nice-to-Have Modern Rails ecosystem experience (Hotwire, StimulusJS) Eye for great user experiences and product design Passion for practical AI applications Benefits Competitive Package : 65k€ + significant equity to share in our success Technical Leadership : Direct collaboration with founders, shape core architecture decisions Real Impact : Build features that transform how companies manage their workplaces Growth Trajectory : Lead and scale the engineering team as we expand Modern Stack : Latest Rails ecosystem with freedom to innovate Prime Location : Tech hub in vibrant Schöneberg, Berlin with modern workspace Flexibility : Primarily onsite with options for remote work Closing Ready to architect impactful solutions from the ground up? If you're excited about wearing multiple hats and leading technical decisions that shape our product, we'd love to hear from you.