Senior Azure/.NET Architect

Oliver James Group; Brussel Hoofdstad; On-site; EUR 120,000 - 180,000; Full time

Job summary

Oliver James Group is seeking a Senior Azure .NET Architect to help design and evolve a cloud-native integration platform on Azure. You will transform a complex ecosystem into an event-driven, high-performance backend powering data, file, and event exchange with external systems.

The role demands deep expertise in .NET, Azure services, and distributed systems, with hands-on deployment to Kubernetes (AKS/OpenShift) and modern CI/CD.

Qualifications

• Extensive experience in software engineering (15+ years), including building distributed, high-throughput, or mission-critical systems.
• Strong hands-on Azure expertise (AKS, Functions, messaging services, storage, monitoring, CI/CD).
• Deep knowledge of .NET (C#, modern .NET, async programming, testing practices).
• Solid understanding of event-driven architecture and distributed system trade-offs.
• Experience with Docker and Kubernetes in production environments.
• A mindset focused on quality, automation, and continuous improvement.
• Confidence to make architectural decisions and guide others.
• Strong communication skills in English.

Responsibilities

• Design and build a modern communication layer handling message and file ingestion, transformation, routing, and delivery (sync + async).
• Create resilient, fault-tolerant systems using retries, circuit breakers, idempotency, and event-driven workflows.
• Architect scalable event-driven solutions using Azure messaging services and/or Kafka-style pub/sub systems.
• Build high-quality .NET services (.NET 7/8, C#, ASP.NET Core, gRPC/REST) with a strong engineering culture (TDD, clean code, performance-first).
• Deploy and operate workloads on Kubernetes (AKS/OpenShift) using Helm and modern CI/CD pipelines.
• Define observability from day one: logging, tracing, metrics, SLOs, and actionable runbooks.
• Collaborate in an agile setup, working closely with engineers, product owners, and other teams.
• Mentor and elevate others-your experience will help raise the bar across the team.

Skills

Azure expertise

Distributed systems

C#

.NET 7/8

Kubernetes

CI/CD

TDD

Mentoring

English communication

Tools

Docker

Kubernetes

Helm

AKS

OpenShift

Kafka

OpenTelemetry

gRPC

Job description

Senior Azure .NET Architect - Build the Backbone of Modern Messaging

We're reimagining a mission-critical communication platform that powers how systems exchange data, files, and events with the outside world. This is not a greenfield toy project-it's a high-impact transformation at scale.

As a Senior Azure .NET Architect, you'll help design and shape a next-generation, cloud-native integration platform. You'll take an existing, complex ecosystem and turn it into a resilient, high-performance, event-driven architecture running on Azure.

If you enjoy solving hard distributed systems problems and building platforms that truly matter-this role is for you.

What You'll Be Doing

• Design and build a modern communication layer handling message and file ingestion, transformation, routing, and delivery (sync + async).
• Create resilient, fault-tolerant systems using proven patterns like retries, circuit breakers, idempotency, and event-driven workflows.
• Architect scalable event-driven solutions using Azure messaging services and/or Kafka-style pub/sub systems.
• Build high-quality .NET services (.NET 7/8, C#, ASP.NET Core, gRPC/REST) with a strong engineering culture (TDD, clean code, performance-first).
• Deploy and operate workloads on Kubernetes (AKS/OpenShift) using Helm and modern CI/CD pipelines.
• Define observability from day one: logging, tracing, metrics, SLOs, and actionable runbooks.
• Collaborate in a truly agile setup, working closely with engineers, product owners, and other teams.
• Mentor and elevate others-your experience will help raise the bar across the team.

What You Bring

• Extensive experience in software engineering (15+ years), including building distributed, high-throughput, or mission-critical systems.
• Strong hands-on Azure expertise (AKS, Functions, messaging services, storage, monitoring, CI/CD).
• Deep knowledge of .NET (C#, modern .NET, async programming, testing practices).
• Solid understanding of event-driven architecture and distributed system trade-offs.
• Experience with Docker and Kubernetes in production environments.
• A mindset focused on quality, automation, and continuous improvement.
• Confidence to make architectural decisions and guide others.
• Strong communication skills in English.

Bonus Points

• Experience with observability stacks (OpenTelemetry, tracing, logging platforms).
• Exposure to large-scale messaging or file transfer systems.
• Knowledge of secure integration protocols (e.g., SFTP, AS2/AS4, messaging queues).
• Experience working in regulated or high-reliability environments.

Why This Role Stands Out

• High impact: You're building a core platform that everything depends on.
• Real engineering challenges: Distributed systems, scalability, resilience-no trivial work here.
• Modern tech stack: Cloud-native, Kubernetes, event-driven, .NET latest.
• Ownership & influence: Your architectural decisions will shape the platform long-term.
• Collaborative culture: Work with experienced engineers who care about doing things right.