Software Engineering Intern (Greentech) (m/f/d)

Other

• Most internships have you sitting in meetings, fixing small bugs, and watching others build.
• This one doesn't.
• At Reonic, you'll work on software used by thousands of renewable energy companies across Europe. You'll ship real features, solve real problems, and see your code in production within days.
• We're building the AI-native operating system for renewable installers. And we're looking for ambitious builders who want to learn fast, take ownership, and make an impact from day one.
• This is a full-time, on-site internship based in Berlin.
• What makes this internship different
• Your work directly impacts how renewable energy gets deployed
• You'll ship production code used by real customers
• You'll work closely with experienced engineers, product managers, and founders
• You'll own projects instead of shadowing others
• You'll see the full lifecycle: idea → implementation → customer feedback
• No busy work. No "intern projects" disconnected from reality.
• Just building, learning, and shipping.
• What you'll build
• Develop product features across our React, TypeScript, and Node.js stack
• Turn complex business workflows into simple and intuitive user experiences
• Work on AI-powered workflows that help installers sell and deliver renewable energy projects faster
• Contribute to backend services, APIs, and internal tooling
• Debug, improve, and optimize production systems
• Collaborate closely with product and design to bring ideas to life
• And if you're eager to go deeper:
• Work with databases and PostgreSQL
• Learn about system architecture and scalability
• Explore AI integrations and automation workflows
• Take ownership of larger features end-to-end
• This is not a typical internship.
• It's a playground for builders.
• Love building things and seeing them used by real people
• Are curious and learn quickly
• Prefer ownership over detailed instructions
• Enjoy solving problems, not just writing code
• Care about creating great user experiences
• Want to work with ambitious people who move fast
• Are studying Computer Science, Software Engineering, or a related field
• Previous startup experience is a plus, but not required.
• What matters most is your ability to learn, execute, and take ownership.
• Why join now
• Competitive internship compensation
• High ownership from day one
• Steep learning curve and rapid personal growth
• Uber Eats and Uber rides on us when you finish late
• Regular team events, great coffee, and a MacBook
• A vibrant, collaborative office culture where great ideas happen face-to-face — we're a full in-person team (5 days/week) in a beautiful Berlin office near Hackescher Markt.
• Join one of Germany's fastest-growing VC-backed startups
• Even if you don’t meet every requirement, we encourage you to apply! Imposter syndrome shouldn't hold you back - we value talent and passion above all.
• At Reonic, we’re on a mission to simplify renewable technology with our AI operating system for renewable installers. Backed by top-tier investors and trusted by 3000+ business customers, we’re growing fast - and we need YOU to help us accommodate our new and existing customers.