Expert Engineer - Senior developer

Role summary We’re modernising a mission‑critical communications layer that routes messages and files between core systems and the outside world (clients, ECB, etc...) . As a Senior .NET Developer, you will design, build, and operate resilient, event‑driven services on Azure, helping us evolve from legacy integrations to cloud‑native, containerised workloads. This role is hands‑on and leadership‑oriented: you’ll set engineering standards, and deliver high‑reliability software for a regulated environment (finance or similar).

Adherence to Euroclear values :

requires strong delivery focus and accountability for translating strategy into measurable outcomes with integrity. Candidates put clients at the centre, take collective ownership, and collaborate effectively while caring about the impact of decisions on colleagues and the long term. They demonstrate courage to challenge ways of working and curiosity to continuously improve efficiency, quality, and results.

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. What you’ll do Design & deliver modern integration services to replace/upgrade the communications layer (message/file ingestion, transformation, routing, delivery; synchronous and async models).

Design for resilience and scale : apply patterns such as circuit breaker, retries with backoff, timeouts, idempotency, outbo