Senior Software Engineer ( Ruby on Rails) 💰Salary: 19,000-22,000 PLN 🌎 Hybrid ( 2 days on site) ☑️ Full-time🕦 Contract through DeelWe’re looking for a Senior Software Engineer for a leading software provider in the clean-energy space, building technology that helps solar professionals design and sell solar projects accurately and at scale. Their platform has powered millions of solar designs and is recognized as one of the top remote-friendly and sustainability-focused companies in the industry.Requirements:5+ years of professional software engineering experience.Strong proficiency with Ruby on Rails.Clear communication skills and comfort working cross-functionally.Familiarity with React and component-based frontend development.Working knowledge of JavaScript and/or TypeScript.Ability to thrive in a fully remote, distributed environment.Strong English skills (written and spoken).Nice to HaveExperience with GraphQL.Interest in renewable energy, climate tech, or mission-driven products.Responsibilities:Build new features for a leading platform used by solar professionals for design and sales.Design and maintain reliable APIs that integrate smoothly with financial and sales partners.Develop secure, scalable backend services built for long-term stability and performance.Contribute to agile planning and help drive predictable, high-quality delivery.Mentor teammates, share knowledge, and strengthen the overall engineering culture.Take ownership of the services you build, including participating in on-call rotations.BenefitsHealth Coverage: Medical, dental, and vision insuranceInternet & Mobile StipendWork-From-Home Support (home office budget)Learning & Development supportGet to know DevsData:We are a technology consulting company and a recruitment agency, delivering software solutions to clients from Europe and the US. We work 100% remotely, in an international team, including people from Asia, London, or San Francisco. We employ people with experience in international corporations as well as students of the best technical and business universities.Find out more: https://devsdata.com/