Freelance Backend Developer

We’re looking for a freelance Backend Developer to join ACC on a new project in the energy transition space.

If you enjoy building innovative software that actually adds value, not just to the customer, but also to the world around you, this could be a good fit.

What you'll do

You’ll join us on a new project and work side‑by‑side with experienced ACC developers. Together, you will set up everything for the project, including designing data interfaces, configuring the cloud, and writing the Python jobs that do the actual work. You’ll have the opportunity to contribute to technical decisions and help shape the architecture and setup of the project.

Our Account Manager handles most customer communication and project management, so you can focus on the technical side of the work.

What you bring

Must have:

• Experience as a Medior or Senior Backend Developer
• Strong experience with Python
• Hands‑on experience building and/or integrating RESTful APIs
• Comfortable working independently and collaborating closely with other developers
• A practical approach to building maintainable, reliable software

Nice to have:

• Experience with Kubernetes
• Experience with Kafka, RabbitMQ, or other messaging systems
• Experience with European cloud providers, such as STACKIT or Scaleway
• Knowledge of NIS2, GDPR or other security/compliance requirements
• Experience with the Dutch energy market
• Knowledge of distributed, event‑driven systems

What we offer

• €80–€110 per hour, depending on level of relevant experience
• Flexibility in how and when you work. We’re happy to discuss a setup that works for you
• Free lunch when working from our office in Utrecht
• Two team gatherings per year, with travel and accommodation in the Netherlands covered
• A small, collaborative team where you can have a real say in the work you do

Why ACC?

We're a small team, so you'll work closely with the people leading the project. There aren't five layers between you and the technical decisions.

We value our developers highly, and aim for clear standards and expectations. You can feel and see the result of your work directly, while being supported by knowledgeable colleagues who can help you find your way.

Our way of working is built around three simple values:

Push for Progress

Don’t just accept that something is "how it's always been done". Always strive for improvements.

Own the Outcome

Take responsibility for what you build and make sure it actually delivers value for the people using it.

Share the Steps

Good development is collaborative. Share your thinking, knowledge, and ideas with the people around you.

Interested?

Questions?

Questions about the hiring process or HR-related topics

Hiring Manager — Jana Endemann

Questions about the technical requirements or the role