Backend Engineer - .NET

• Build a new backend domain from the ground up. You will help shape a completely new digital backend domain at Eneco, focused on heat delivery and energy transitions.

• High ownership in a small, senior team. You are the backend authority in the team, with real influence on architecture, logic, and long-term maintainability.

• Technology with direct customer and sustainability impact. Your work directly improves how customers move towards sustainable heating solutions, with fewer errors and less friction.

Why choose Eneco?

The One Planet strategy at Eneco sets an ambitious goal: to be climate neutral by 2035. Achieving this requires not only sustainable energy solutions, but also clear, reliable digital experiences that guide customers through complex changes such as district heating and new-build connections. This team focuses on simplifying those transitions through strong backend foundations.

What you’ll do

You will join a newly formed, app-first product team that is responsible for designing and building digital heat onboarding and delivery flows for Eneco customers.

As a Senior Backend Engineer, you will focus on:

• Designing backend services that support complex customer journeys without exposing complexity to the user
• Translating business rules and operational constraints into clear, maintainable backend logic
• Ensuring backend decisions are consistent, explainable, and resilient to change
• Actively shaping the technical direction of this new domain, from API design to data ownership

Our backend landscape is built on .NET Core and Azure, with Azure DevOps as our CI/CD backbone. You will operate with a high level of autonomy and responsibility within this environment.

Is this about you?

• Extensive hands-on experience with .NET / .NET Core in complex, business-critical environments
• Strong experience designing and operating cloud-native backend services in Azure
• Proven ability to work with Azure DevOps (ADO) and fully automated CI/CD pipelines
• Senior-level ownership mindset: comfortable making decisions in domains that are still evolving
• Strong communication skills in English, able to align technical solutions with product and business stakeholders

You’ll be responsible for

• Designing, building, and owning backend services in .NET for a new digital product domain
• Making architectural and technical decisions that balance customer experience, operational reality, and long-term scalability
• Collaborating closely with Product, Design, and Frontend to enable simple and trustworthy customer journeys
• Safeguarding backend quality through clean code, testing, and clear API contracts
• Contributing to Eneco-wide backend standards and best practices through your seniority and experience

This is where you’ll work

HELLO! THIS IS YOUR TEAM

You will work in a small cross-functional team with:

• A Product Owner
• A freelance Product Designer
• A Frontend Engineer (50%)
• You, as the Senior Backend Engineer
• An Engineering Manager

The Engineering Manager helps keep priorities clear, removes blockers, and supports you in doing your work well. You are trusted to take ownership and are given the space to do so.

What we have to offer

Gross annual salary between €80.000 and €110.000 including FlexBudget, 8% holiday allowance, and depending on your role a bonus or collective profit sharing.

FlexBudget: Have it paid out, use it to buy extra holiday days or save it up for something nice, it's up to you.

Personal and professional growth: Eneco is fully committed to help you in your personal and professional development.

Hybrid working: home, office or abroad: Work 40% at the office, 40% from home, and 20% flexibly. With manager approval, you may work abroad (within approved countries) up to 3 weeks/year, max 2 consecutively.

Work that works for you and the climate

If you decide on a career at Eneco, you are choosing ambition, growth and opportunities. You will have all the space you want to improve yourself and do your job the way that suits you best, which includes having a good work-life balance. You can work to a flexible schedule and work partly from home if your role allows it. That is how you can work on your own future and on the future of the world. After all, you and your 4,000 colleagues are committed to our mission: climate neutrality by 2035. We assist customers to accelerate their sustainability efforts, devise innovative solutions and seize opportunities with both hands. Are you ready?