Senior Azure .NET Architect

Note:

• You must be based in Belgium or France
• minimum 8 days a month present at the Brussels office is mandatory

Role summary

• We're modernizing a mission-critical communications layer that routes messages and files between core systems and the outside world. As a Senior Azure .NET Architect you will contribute to the technical design of the rewrite of an application currently developed using various technologies: .NET, IBM ACE, Service Fabric, Service Fabric.
• The target solution will be in .NET, cloud native, containerized and hosted in Azure cloud. You will design it keeping in mind the need for high resilience and performance.
• About the context: The STP tribe operates messaging and group applications that ensure data, files, and messages are processed seamlessly end-to-end. This role directly contributes to that mission and contribute to the company strategy to embrace cloud and scale.

Minimum qualifications

• 15+ years of professional software engineering,
• including 5+ years building mission-critical or high-throughput distributed systems (preferably in financial services or similarly regulated domains).
• Azure hands-on experience: AKS, Functions, Service Bus/Event Hubs, Storage, Key Vault, Application Insights, Azure DevOps (Pipelines/Repos).
• Expert .NET engineer (C#, .NET, async/await, DI, testing frameworks).
• Dapr/KEDA, gRPC, and API gateway experience.
• Containers & orchestration: Docker and Kubernetes (OpenShift and/or AKS), Helm, image life cycle, secure supply chain.
• Event-driven architecture fundamentals: pub/sub, event streaming, consumer groups, schema evolution, and exactly-once/at-least-once processing trade-offs.
• Test-Driven Development (TDD) and automation mindset; CI/CD pipelines and trunk-based development experience.
• Proven resilience engineering knowledge (timeouts, retries, circuit breaker, backpressure, outbox/inbox, DLQ, bulkhead, saga).
• Ability to work autonomously, make sound design decisions, and coach junior developers.
• Professional English (written and spoken).