About Reonic At Reonic, we’re on a mission to simplify renewable technology with our B2B SaaS solutions for solar, storage, and heat pumps. Backed by top-tier investors and trusted by 1,400 business customers, we’re looking to extend our engineering team with a Backend Developer—and we need YOU to help us build a team that drives this mission forward. What you will do ✨ Mobile Development : Build and improve our mobile applications using React, making renewable tech tools easy and intuitive for our customers. UI/UX Collaboration : Work closely with designers to implement beautiful, user-friendly mobile experiences. ⚡ Feature Development : Help deliver core product features that empower businesses in the renewable energy sector. Quality & Learning : Write clean code, test your work, and learn best practices from experienced engineers. What Makes You a Great Fit ✅ Passion for React : You have hands-on experience with React (internships, projects, or personal apps count!). Eager to Learn : Excited to grow your skills in mobile development, testing, and deployment. ️ Tech Basics : Understanding of JavaScript/TypeScript, APIs, and mobile app fundamentals. Mission-Driven : A genuine interest in clean energy and sustainability. Bonus Points : Experience with GitHub, AWS, or open-source contributions. Why Join Us? A pivotal role in a fast-growing VC-backed startup building a product already loved by 1000 paying B2B customers Be part of a fast-growing company that’s making a tangible impact in the renewable energy sector Nothing is set in stone - You get to shape your workplace Learning new things is part of your job A competitive salary package ️♂️ Perks include gym membership, coffee, regular team events, MacBook & more Location This is a full-time, in-office position. Our Berlin office is located at Alexanderplatz. Ready to shape the future of renewable energy? Apply now! If you're a talented, ambitious Backend Engineer with a passion for clean energy, we want to hear from you!