---
title: 'Software Engineering Intern (AI x Greentech) (m/f/d) at Reonic'
canonical: 'https://feeny.ai/job/software-engineering-intern-ai-x-greentech-m-f-d-reonic-berlin-bd6pw3h1090v'
type: 'job'
last_seen: '2026-09-06'
---

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

- **Company:** Reonic
- **Location:** Berlin, Germany
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-08-06
- **Last confirmed live:** 2026-09-06
- **Apply:** https://jobs.ashbyhq.com/reonic/dd26ab09-62de-4d27-9e11-64eccb2e33df

## Job description

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.

## 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.

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.

## About Reonic

## Company Overview
- **One-liner**: Reonic is an AI-native, all-in-one software platform that empowers renewable energy installers to sell, design, and manage solar, storage, heat pump, and EV charging projects from first lead to completed installation.
- **Entity Type**: Private (Series A)
- **Headquarters**: Augsburg, Germany
- **Founded**: 2023
- **Founders**: Tristan, Manuel, and Udo

## Core Business
- **Primary industry/industries**: Clean Energy Technology / Climate Tech / Solar & Renewable Energy Software
- **Target customers**: B2B; specifically small-to-medium sized solar and renewable energy installation companies (installers) across Europe and Latin America.
- **Mission or purpose statement**: Empowering installers globally and building a generational company by providing the platform that powers the energy transition.

## Products & Services
Reonic replaces multiple separate tools (CRM, design, proposals, project management, invoicing) with one integrated system.
- **Core Software (AI-Native Platform)**: An integrated suite including:
    - **Leads & CRM**: Capture demand from forms, partners, calls, emails, and field notes.
    - **System Design**: Automated module layouts, shading simulation, and technical checks for solar, storage, wallbox, and heat pump projects.
    - **Offers & Signatures**: Turn a design into a branded offer with pricing, savings, variants, and a digital acceptance flow.
    - **Project Workflow**: Track project status (sold, ready, blocked, scheduled, installed, handed over) without spreading updates across tools.
    - **Field Documentation**: Mobile app for installers with checklists, photos, tasks, and handover context on phone and tablet.
    - **Services & Automation**: AI agents handle repetitive tasks; offload planning support, drone models, registrations, funding workflows, and API connections.
    - **API**: Open API for custom integrations.
- **Services**: Handling of paperwork, grid registration, financing, and subsidies so installers can focus on selling and installing.

## Market Standing
- **Valuation/Market Cap**: Not publicly disclosed.
- **Key Metric**: Total Funding of $18.5M ($3M Seed + $15.5M Series A).
- **Notable Investors/Partners**: Northzone, Point Nine, Puzzle Ventures.
- **Growth Signals**:
    - Grew 7x in 2024.
    - Expanded from 80 employees to over 100 team members.
    - Serves over 3,000 customers across 13 markets in Europe and LATAM.
    - Opened new offices in Berlin, London, and São Paulo in 2025.
    - Expanded into France, Italy, the UK, and Latin American markets.

## Competitive Advantages
- **All-in-One Platform**: Replaces 10 separate tools (CRM, design, proposals, project management, invoicing) with a single integrated system, drastically reducing complexity for installers.
- **AI-Native Architecture**: AI is not an add-on but is woven into every workflow (automated designs, instant pricing, document generation), enabling proposals in minutes instead of hours.
- **Speed at Scale**: Obsessive focus on removing unnecessary clicks, allowing installation companies to serve more customers with the same team.
- **First-Mover & Market Leadership**: Claims to be the largest software and services platform for renewable installers in Europe, with a rapidly expanding global footprint.

## Strategic Focus
- **Market Expansion**: Aggressively expanding beyond the DACH region (Germany, Austria, Switzerland) into new European markets (France, Italy, UK) and establishing a strong presence in LATAM (Brazil).
- **Product Expansion**: Continuing to build out the platform to cover photovoltaics, storage, heat pumps, and e-mobility, ensuring everything works together for the all-electric world.
- **Talent Acquisition**: Focused on hiring "A-Players" and "the best and most ambitious people" to fuel rapid growth and maintain a high-performance culture.

## Why Work Here
- **Culture Highlights**: Described as a fast-paced, high-ownership, and ambitious environment. The company explicitly states it is "not a 9-to-5" and looks for people who "want to win." They value builders, product minds, and those who combine vision with relentless execution.
- **Remote/Hybrid/Office Policy**: **In-office, on purpose.** The company believes speed happens in person, with decisions in minutes, not days. They have offices in Augsburg (HQ), Berlin, London, and São Paulo.
- **Notable Perks & Engineering Culture**:
    - **Compensation**: Great salaries, real equity, and performance raises (no annual cycles; delivered on impact).
    - **Benefits**: Wellpass or monthly transit pass, Uber Eats for late dinners, Uber rides home after 7pm.
    - **Engineering Culture**: "No Scrum theater. No Agile BS. We ship, learn, and iterate every day." They look for engineers who own products and solve problems before they're pointed out. Low turnover is cited as a sign of strong culture.
    - **Hiring Philosophy**: "We don't wait for headcount. If you're exceptional, we make room."

## Sources
1. [Reonic About Us](https://reonic.com/en-gb/about/us/)
2. [Reonic Careers Page](https://reonic.com/en-gb/about/jobs/)
3. [Reonic Product Page](https://reonic.com/en-gb/)
4. [CB Insights - Reonic Profile](https://www.cbinsights.com/company/reonic)
5. [Ashby Careers Page](https://jobs.ashbyhq.com/reonic)

## Other roles at Reonic

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