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

Reonic·Berlinjunior

In short

→Desarrollas software real para empresas de energías renovables en Europa.
→Trabajas en features completas con React, TypeScript, Node.js y IA, desde idea hasta producción.
→Tienes propiedad total de proyectos desde el primer día, sin tareas vacías ni roles simbólicos.

No se requiere inglés, pero el puesto está en un entorno internacional.

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What they ask for

✓Estudios en Ciencias de la Computación, Ingeniería de Software o campo relacionado.
✓Interés y habilidad para construir productos con impacto real.
✓Capacidad para aprender rápido y tomar iniciativa sin instrucciones detalladas.
✓Experiencia básica con React, TypeScript o Node.js (o disposición para aprender).
✓Ganas de trabajar en un entorno rápido, colaborativo y en persona.
✓Curiosidad por sistemas, arquitectura y cómo funciona la IA en aplicaciones reales.

Don't tick every box? That's normal — your free dossier shows your gaps and how to cover them in the interview.

ReactTypeScriptNode.jsPostgreSQLAPIsAI-powered workflowsbackend servicesinternal toolingsystem architecturescalability

Who should you write to at Reonic?

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Build the Operating System of the Energy Transition 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. 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. You'll thrive here if you... 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. About Reonic 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.

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