About The Job ACENSI is looking for a Senior Dev & Architect .Net & Python - real time steering for one of their clients based in Brussels in the energy sector : Main Activities As Senior Software Developer And Architect, You Will Guide technically the development (3-5 people). Guide the discussion with functional analysts and with domain experts. Design architectural proposals, documented in diagrams, including APIs, services, front-end and back-end interactions. Sometimes autonomously, sometimes in team collaboration Improve the delivery in general. You will supervise the team to ensure these activities as a team: Subdivide the proposal into agile progressive development upgrades. Implement builds and associated testing and maintenance tools. Develop back-end services and APIs. Write tests in collaboration with business colleagues. Document and develop user manuals. Provide user assistance and support Monitor systems and provide level 2 support, incident resolution, and troubleshooting (root causes of recurring incidents). There is a potential to grow as tech lead. To be discussed. Hard skills Required: at least 6+ years of software engineering & technical design and architecture responsibilities. Education: a master as polytechnic engineer is a strong plus. The Following Abilities Are Required Proficiency in .NET Proficiency in Python, including async programming and performance-oriented design Proven experience in designing and operating event-driven architectures (Kafka, Azure Event Hub or MQTT) Solid understanding of distributed systems concepts: scalability, fault tolerance, backpressure, ordering, idempotency Hands-on experience with Kubernetes in production environments, including autoscaling and deployments Experience with stateful systems such as Redis (caching use cases) Strong testing culture: unit tests, integration tests, and production validation Production-grade observability: metrics, logging, alerting (Grafana, Prometheus, or equivalent) Familiarity with agile development practices Experience with one of these technologies is a plus: Scala, Rust. Experience with parts of our technical stack is a plus: Azure, Bicep (Infrastructure as Code) Python (async), .NET Kubernetes (autoscaling, rolling deployments), Azure Function Kafka / Azure Event Hub, MQTT, Azure Service Bus PostgreSQL, Redis, Azure Data Explorer (under testing) CI/CD: GitHub Actions, Continuous Deployment Optionally, for components of Kiwi: Scala, Rust. Languages Fluent in English. French or Dutch is a plus