Python Software Developer - Flexibility Applications (f/m/d)

Next Kraftwerke; Köln; Hybrid; EUR 55.000 - 75.000; Vollzeit

Zusammenfassung

A leading renewable energy firm in Cologne is seeking a Software Developer to create sustainable software solutions for energy trading. You will work with Python and collaborate in an agile environment to bring innovative ideas to life while enjoying flexible working hours and various development opportunities. Candidates should possess a STEM degree and experience in software development, ideally including Python and linear optimization. Fluency in English is required, with German knowledge being a plus.

Leistungen

Flexible working time models

Comprehensive further development opportunities

Job-bike and Germany ticket

Sports offers

Regular company events

Qualifikationen

• Experience in software development and Python.
• Ability to structure complex domains clearly.
• Curious and eager to learn new technologies.

Aufgaben

• Develop applications for electricity trading.
• Design and implement APIs and user interfaces.
• Translate technical restrictions into optimization models.

Kenntnisse

Python

Software Development

Agile Methodologies

Linear Optimization Models

English (Fluent)

Ausbildung

Degree in STEM field

Apprenticeship in Software Development

Tools

Docker

GitHub

Azure

SQLAlchemy

Terraform

Jobbeschreibung

In the Software and Data Services unit at Next Kraftwerke, we use agile methods to develop sustainable software solutions for the European energy transition. With a growing portfolio of batteries, solar, wind, and biogas power plants, taking advantage of these assets’ flexibility is necessary to respond to fluctuations in renewable energy production. You will develop applications with which our electricity traders can react to price signals and utilize our flexible assets in the most profitable way. In our open‑minded and cooperative working environment, we offer you the opportunity to work on topics that are highly relevant to the energy transition, to contribute your programming expertise and to continuously develop yourself and the team.

Flexible working time models are not just an empty phrase for us, but an everyday reality at our company. Whether full‑time or part‑time, we’re open to finding a solution that suits you.

We work with

• Python 3
• asyncio, FastAPI, SQLAlchemy, pandas, Pyomo
• Azure, GitHub, Docker, MySQL, RabbitMQ, Redis, Terraform
• Jira, Confluence, Grafana

This Is What You Like

• You enjoy bringing a wide variety of data streams together to optimize the operation of several hundred flexible assets.
• You design and implement APIs and user interfaces that enable others within the company to access this flexibility.
• You like exploring opportunities to use flexibility in short‑term trading on the European power exchanges.
• You translate the technical restrictions of flexible assets (like batteries and biogas plants) into concrete optimization models.
• You develop our ideas into high‑quality, production‑ready code that can scale up and optimize hundreds of assets.
• You value working in a cross‑functional team with agile concepts such as Scrum, code reviews, pair programming, and retrospectives.

These Are Your Qualifications And Skills

• You hold a degree in a STEM field (sciences, technology, engineering, math), an apprenticeship in software development, or bring equivalent knowledge that convinces us.
• You have experience in software development, including experience working with Python.
• You’re able to break down and structure complex domains clearly.
• You are curious, creative, eager to learn and enjoy discussing technical solutions with colleagues.
• You ideally bring experience with linear optimization models and related algorithms.You are fluent in English, both written and spoken. Knowledge of German, or the motivation to learn it on the job, is a plus.

This Is What Our Colleagues Say

“Creativity, team orientation, sustainability – you don't immediately associate these qualities with Software Development. But here at Next Kraftwerke, they all come together: As a team, we develop creative ideas and solutions and implement them successfully as part of the digital energy revolution. Flexible working hours give me the freedom to develop professionally while also taking care of private activities.”
Lydia, Software Developer at Next Kraftwerke

What's in it for you?

• Hybrid and flexible working including home office equipment
• The opportunity to save up additional vacation days and use them flexibly with our Flextime working model
• Comprehensive further development opportunities such as language courses, coaching and training
• Job‑bike and Germany ticket
• Sports offers e.g. (Urban Sports Club, Yoga courses)
• Regular events: summer party, Christmas party, LAN party, after‑work pizza & drinks
• External support in finding daycare places as well as other private and professional challenges

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