Senior .NET Backend Engineer

Build mission-critical systems powering the energy infrastructure of tomorrow

Work with cutting-edge distributed, event-driven, and cloud-native technologies

Shape Eneco’s digital energy future through innovation and engineering excellence

Why choose Eneco?

Eneco’s mission is to achieve climate neutrality by 2035 for both our organization and our customers, supported by our One Planet strategy through advanced digital solutions and innovative technologies.

Eneco is committed to accelerating the energy transition by developing intelligent digital solutions that support the infrastructure of tomorrow, making sustainability accessible to everyone. We remove barriers to sustainability by developing intelligent digital solutions that support the infrastructure of tomorrow.

As part of this mission, we design and operate systems that are core to energy stability and innovation. Working with advanced software engineering, cloud technology, and distributed architectures, we enable reliable, secure, and scalable solutions that support mission-critical assets across the Netherlands. Eneco empowers engineers to work with modern tooling, high-impact products, and a purpose-driven mindset.

What you’ll do

We are seeking a skilled .NET/C# Engineer to join our team in developing the VPP Core Domain, a critical system responsible for the management and monitoring of essential energy assets. In this role, you will design and implement scalable, reliable, and high-performance back-end solutions to support mission-critical operations within Dutch infrastructure (controlling mission-critical Dutch assets).

You will contribute to sophisticated event-driven and distributed systems, ensuring robust functionality in a high-stakes environment. As part of a collaborative, cross-functional production team, you will work with cutting-edge technologies to deliver innovative solutions that meet the highest standards of quality and reliability. At least 7 years’ experience in complex, distributed, scalable backend application design and development is required.

Is this about you?

• Coding Expertise: Expertise in building robust, high-performance applications.
• Cloud-Native Development: Proficiency with Azure for scalable, resilient deployment and competence with cloud-native design patterns.
• Container Orchestration: Experience with modern DevOps practices, infrastructure-as-code (Terraform), and Kubernetes for managing containerized workloads.
• Database Technologies: Experience building with SQL and No-SQL databases (MongoDB/Cosmos DB).
• Messaging Systems: Experience developing solutions with Kafka, Event Hubs, or RabbitMQ for asynchronous communication.
• Frontend (Optional): Exposure to Vue.js is a plus but not required.
• Architecture: Proven experience implementing architecture patterns and driving architectural decision making within teams, considering cost, performance, scale, and features.

You’ll be responsible for

• Develop and maintain scalable back-end systems using .NET and C# with well-known design patterns, robust, resilient, secure, and well-tested code.
• Design and implement event-driven architectures leveraging messaging systems.
• Take a lead role in team code reviews and be an active contributor to team software and solution architecture.
• Mentor peers and improve development processes when needed.
• Champion improvements in observability by developing service metrics to indicate health and performance of services.
• Ensure system reliability and performance in distributed, cloud-native, and hybrid cloud/on-premises environments.
• Collaborate with cross-functional teams and your product manager to deliver mission-critical solutions.

This is where you’ll work

You will join a forward-thinking engineering team responsible for developing the VPP Core Domain — a critical part of Eneco’s digital energy infrastructure. This team builds high-stakes, production-grade solutions that power essential systems relied upon across the Netherlands.

Collaboration, innovation, and technical excellence are at the core of how the team operates. You’ll work alongside skilled engineers and product managers using event-driven systems, cloud-native platforms, distributed architectures, and modern DevOps practices to deliver impactful, high-reliability solutions.

What we have to offer

Gross annual salary between €85.000 and €120.000

Including FlexBudget, 8% holiday allowance, and depending on your role a bonus or collective profit sharing.

FlexBudget

Including FlexBudget, 8% holiday allowance, and depending on your role a bonus or collective profit sharing. 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?