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Energy Nerd / Developer - Freiburg im Breisgau

greenventory GmbH · Freiburg im Breisgau

On-siteMidPosted 9 Aug 2026

What this role requires

2 requirements, read out of the advert rather than guessed from the job title:

Also mentioned, not required: Git, GitHub, CI/CD, QGIS, GeoPandas, Shapely, PyProj, English (B2). Worth having, but their absence is not what gets a CV filtered out.

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Job description

“We design the infrastructure systems of tomorrow!” – With you?

We are convinced that the transformation towards sustainable, resilient and efficient infrastructures does not have to be complicated. We provide municipalities, utilities, grid operators and other infrastructure stakeholders with the data, analyses and decision-making tools they need for integrated infrastructure and energy system planning.

To strengthen our team, we are looking for a motivated and solution-oriented Project Engineer (m/f/d) with a focus on heating grids to support the implementation of transformation plans and feasibility studies and to contribute to the development of innovative tools and solutions for future-oriented energy systems.

Tasks

Design and develop scalable algorithms for energy system modelling

Architect, extend and optimise simulation models in Python, ensuring modularity, performant data structures and reusable code

Read the full description (34 more sections)

Conduct comprehensive and automated analyses of simulation results to extract actionable insights for energy planning

Translate local desktop simulations and algorithms into production-ready software architectures for integration into our SaaS platform

Establish and document standardised workflows for data integration, geoprocessing and quality assurance

Proactively align on-premise and academic tools with the requirements of production SaaS applications

Develop and extend greenventory's internal toolbox for energy system modelling and planning

Work closely with energy experts, software developers and researchers to turn complex energy system questions into robust technical solutions

Continuously improve the performance, maintainability and usability of our modelling and simulation tools

Requirements

You have a deep understanding of energy systems and/or computer science

You have strong skills in simulation and programming, particularly Python

You have experience with Django or comparable Python-based web frameworks

You have 2–5 years of practical experience in energy modelling, data science or engineering software development

You have experience with Git-based version control and GitHub, including clean commits, pull requests and branching strategies

You are familiar with CI/CD pipelines, automated testing and linting

You have experience with QGIS and geospatial data analysis

You are familiar with geospatial Python libraries such as GeoPandas, Shapely and PyProj

You have experience with agentic coding and AI-supported development workflows, for example LLMs, Copilots or automated coding agents

You are familiar with Agile development environments and code review practices

You are interested in SaaS applications and enjoy turning technical concepts into production-ready software

You have good communication skills in English

You can balance the requirements and expectations of an end research institute environment with the practical needs of greenventory and a production software environment

Benefits

Career prospects: Work in a sustainable, socially relevant and absolutely future-proof field.

Team spirit: Whether in daily work, regular after-work activities or company outings - look forward to a friendly team where you will be fully integrated from the start and enjoy your work.

Flexible working: Whether you're an early bird or a night owl, you can arrange your working hours flexibly. In addition, thanks to hybrid working, you also have the option of working from home occasionally.

Fair pay: We offer an attractive and competitive salary package.

Personal training and development opportunities: We offer you the opportunity to quickly take on responsibility in projects within a strong team and to grow through new and exciting tasks.

We work in a state-of-the-art office with top-of-the-line equipment, based in Freiburg.

Health is a high priority for us. We therefore support our employees financially with Hansefit memberships and offer the option of leasing a company bike.

Work-life balance: In addition to 30 days of annual leave, we also offer the possibility of working part-time: A 4-day week is no problem for us!

"But why exactly Greenventory?"

With us, you have the opportunity to work in an ambitious team on projects that will shape the future. Through your work, you will make a significant contribution to advancing the energy transition and paving the way to climate neutrality.

Sounds good? Then apply now!

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