Senior .NET/C# Engineer - Virtual Power Plant

At Eneco we work towards one clear goal: being fully climate-neutral by 2035. Our One Planet strategy leans on smart digital platforms that make the energy system greener and more flexible.Our Virtual Power Plant (VPP) brings distributed assets together into one coordinated pool, so even small batteries and rooftop solar can take part in the energy market as part of Eneco's portfolio. Your work helps make that system reliable and scalable, so renewable energy gets used at the right moment. You'll do it in a cross-functional team that shares knowledge, learns together and gives you room to grow.You build and maintain backend services and integrations in .NET/C#.You develop solutions that optimise behind-the-meter assets: large batteries, rooftop solar and other installations on the customer side.You connect data flows so smaller assets can join the energy market as part of Eneco's pool.You share on-call duty for a system that runs 24/7 in live energy markets.You drive Proof of Concepts and partner with architects on system design.You mentor medior and junior engineers through code reviews and technical guidance.Reliable, scalable backend services that connect distributed assets to our VPP and keep running 24/7.Solutions that optimise behind-the-meter assets and bring smaller assets into the market as one portfolio.Technical ownership of components and the architectural decisions around them.Healthy engineering practice: you tackle technical debt, performance bottlenecks and reliability risks before they bite.A stronger team: you lift others through reviews, mentoring and shared standards.You have around 7 years of backend experience with .NET/C# and have built complex distributed systems.You've designed, owned and evolved high-availability production systems at scale, ideally in real-time or data-intensive domains.You're at home with event-driven architecture and async messaging (Kafka, Azure Event Hubs or RabbitMQ).You know your way around Azure, CI/CD, containers (Docker/Kubernetes) and microservices, and you're comfortable with relational and non-relational data.You're happy taking on-call responsibility in a 24/7 environment, and you enjoy leading cross-functional technical discussions.You're based in the Netherlands and fluent in English.Knowledge of energy markets, optimisation systems or aggregation platforms is a real plus, but you can also grow into the domain here.Recognise yourself in most of this, but not every requirement? We'd still love to hear from you.You join the BtM (Behind The Meter) B2B and Aggregation team in Rotterdam, working closely with other cross-functional product teams. The team owns two products: a scalable solution that optimises energy flexibility for B2B customers across countries, and the aggregation layer that pools those assets into the Virtual Power Plant. You'll collaborate daily with other .NET developers, testers, product managers and architects, with the freedom to bring in your own ideas and the ownership to see them through.You build the systems that steer batteries, solar and other assets into Eneco's Virtual Power Plant.You own a business-critical system that runs 24/7 across multiple European markets.You work hybrid from Rotterdam with .NET/C#, Azure, Kafka and Terraform.