🚀
We’re hiring: Senior Python Software Developer – Net Calculation Models (Team UNO)
📍 Arnhem / Amsterdam \| ⏱ 36 hrs/week \| 💼 Fixed-term (no freelance)
We are working on a
safe, smart, and future-proof electricity grid
. The energy transition brings complex challenges—and
Python developers like you are essential to solving them
.
Your role
As a
Senior Python Software Developer
in
Team UNO
, you will develop
reliable and scalable network calculation models
that simulate the electricity grid. These models help answer critical questions such as:
You’ll help build a
robust Python-based backend
that supports decision-making for a wide range of users and ensures grid reliability.
🎯 Responsibilities
Develop and maintain
scalable, future-proof Python back-end solutions
Build and improve
network calculation models
Integrate data from multiple sources into reliable models
Contribute actively in a
Scrum / DevOps team
Ensure high software quality through
automated testing
Support CI/CD pipelines and application reliability
🧠 Your profile
Required
5+ years of professional experience in
Software Engineering
3+ years of hands-on experience with
Python
Strong experience working in
DevOps environments
Experience with:
CI/CD
(preferably GitHub Actions)
Automated testing
(pytest, integration \& E2E testing)
SQL \& relational databases
(preferably Snowflake)
Nice to have
Experience with AWS
Application architecture knowledge
Data modelling experience
Interest in electrical engineering
📍 Practical details
Start date:
19 January 2026
Duration:
until 31 December 2026
Hours:
36 per week
Location:
Minimum
2 days on-site
(1 day Arnhem + 1 day Amsterdam)
Willingness to increase on-site presence when required
Minimum
2 days on-site
(1 day Arnhem + 1 day Amsterdam)
Willingness to increase on-site presence when required