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# Working Student - Energy Invoice Quality & Automation

- **Company:** ecoplanet
- **Location:** München, Germany
- **Contract:** Permanent contract
- **Skills:** Microsoft Excel, Artificial Intelligence, Excel Formulas, Python (Programming Language), SQL Databases, Scripting, Sql Optimization, Claude Code, Zapier, Bug Reporting, Information Technology, Claude
- **Published:** November 14, 2026
- **Apply:** https://www.adzuna.de/details/5963499821

## About the Role

* Currently in a late Bachelor's (4th semester or higher) or a Master's in Informatics, Engineering, Energy, or Business with a technical focus (Wirtschaftsingenieurwesen, TUM-BWL, etc.)
 * Solid to advanced SQL, including JOINs and aggregations, and ideally window functions or CTEs
 * Good Python skills: you can read, understand, improve and run small scripts and tooling, or enable yourself with AI tools (Claude Code, Codex, etc.)
 * First experience supercharging your work with AI tools like Claude or Codex, going beyond basic research prompts
 * Strong Excel and/or Google Sheets skills, including complex formulas and templates
 * A precise, structured way of working, an eye for numbers that don't add up, and the drive to dig until you find the root cause
 * Motivation to dig deep into the invoicing logic of our software and of energy contracts and invoices in general
 * Fluent German (energy invoices and supplier communication are in German) and English

Nice to have:

 * Work experience in the energy sector (supplier, grid operator, energy management)
 * Familiarity with German energy price components (Netzentgelte, Konzessionsabgabe, Stromsteuer, Umlagen) or load profiles (RLM/SLP)
 * Experience with automation tools like n8n or Zapier (or the wish to learn them)

## Description

At ecoplanet, we're redefining energy for tomorrow. Our mission: turn energy management into the competitive edge every European business relies on to win its market. We're building the operating system for the energy transition - cutting energy costs, improving efficiency, and streamlining operations. Backed by EQT Ventures, HV Capital and more, and built by a team full of top-tier talent.

Why This Role Matters

Energy invoices are where money quietly leaks: wrong prices, wrong billing periods, wrong grid fees. You will own the checks that catch those errors, find out why they happen, and turn every pattern you find into a better product. Small team, real ownership, and your findings reach the product quickly.

What You'll Achieve

 * Invoice checking. Own the regular checks of energy supplier and grid operator invoices against contracts, meter data and our own calculations, and flag errors
 * Root causes. Investigate mismatches (prices, consumption, grid fees, taxes and levies, billing periods) until you know why they happened, and document recurring error patterns so they feed into product improvements
 * Automation. Replace manual checks with SQL queries and Python scripts
 * Product improvement. Work with Product and Solution Engineering to improve our invoicing logic: write clear bug reports, test new features and onboard new customers' data
 * Scalable processes. Build templates, checklists and documentation so the process can scale