Fullstack Developer (m/w/d) - Freelance

Start: 08.09.2025 Ende: 07.09.2026

Einsatzort: 160 Tage (Vollzeit) - davon 10% onsite in Berlin

Sprache: Deutsch (B1) und Englisch (C1)

Aufgaben:

• Development and enhancement of python & react applications using templates.
• Maintaining and improvement of python & react packages used within the platform.
• Coordination with various stakeholders to align development with governance, security, and compliance requirements.
• Ensure smooth platform operations by prioritizing incident fixing and standard requests.
• Promote transparency and the innersource approach within the development community.
• One part of your tasks you support the business in the implementation (backend/ frontend) of various use cases on OpenShift infrastructure.
• Another part of your task is to develop the base platform for all users.

Muss Anforderungen:

• At least 5 years of experience coding with Python and React / Type Script
• Proven track record of working as a consultant / mentor for other developers
• Fluent in English (C1), German (at least B1)
• 3 years of experience working with SQL databases
• 2 years of experience working with Kubernetes and Helm Charts (OpenShift experience is a plus)

Kein Muss, aber von Vorteil

• Energy industry know-how is an advantage,
• Worked with FastAPI, Pydantic as well as common modern Python libraries (incl. Flask)
• 3 years of experience with testing libraries and methodologies
• 1 year experience with setting up and maintaining Azure DevOps pipelines is a plus