Backend Developer

As a Junior Backend Developer in the Trading & Market Integration team, you will work on the core of our operational platform: systems and algorithms that determine how and when energy systems are controlled and deployed on energy markets. You will build scalable backend solutions that support real-time decision-making based on market prices, grid conditions, and asset behavior. You will receive good guidance and plenty of room to learn.

• HBO or university degree in a relevant field.
• Experience with Python and interest in backend development.
• Affinity with data, algorithms, or (near) real-time applications.
• Proficiency in the Dutch and/or English language.
• Eager to learn, proactive, and collaborative attitude.

Pros:

• Experience with developing production-ready software (services, data pipelines, or integrations).
• Experience with frameworks such as Django, Flask, or FastAPI.
• Interest in or experience with energy markets, trading, or optimization issues.

• Building and learning to build scalable backend solutions to support real-time decision-making.
• Contribute to integrations with external marketplaces, grid operators, and trading platforms.
• Developing and maintaining systems for controlling energy assets (e.g., batteries and solar parks) together with Data Scientists.
• Being involved in the entire software development chain, from design to implementation.
• Ensuring the performance and reliability of systems that influence operational results.
• Participate in team meetings, planning sessions, and sprint reviews.

• Personal budget of 12% on top of your salary (8% holiday allowance and 4% for personal purposes), available for extra vacation days, pension contributions, or tax benefits such as a gym membership.
• 26 days of leave with a full-time employment contract plus 2 additional collective days off.
• Pension plan in which the employer pays 2/3 of the premium.
• Space for professional and personal growth with courses and further training.
• NS Business Card for commuting and business travel.
• Flexible and hybrid working, with modern offices or from home and a work-from-home budget of €400.
• Offices in Groningen and Amsterdam; at least 2 days per week in Groningen during the first two months for the onboarding period.
• After the onboarding period, attendance at the bi-weekly sprint kick-off in Groningen is desired; otherwise, a great deal of flexibility in consultation.

We provide owners of large-scale business energy connections with insight into and control over their energy by matching supply and demand. We offer expert advice and handle the smart management of assets, enabling clients to derive maximum return from their energy system.

Our mission is sustainable energy at the right time, in the right place, and at the right price.