Senior Tech Lead .NET / Azure

Location: Brussels (Hybrid)

Industry: Insurance

Contract: Freelance – 12 months + possible extension

Start: ASAP

About the role

We are looking for a Senior Tech Lead (.NET / Azure) to join a transversal technical team within a leading company in the insurance sector. The role focuses on driving technical transformation, supporting development teams, and modernizing systems toward .NET and Azure-based architectures.

Responsibilities

Lead the transition from legacy systems to modern .NET and Azure solutions

Drive technical migrations involving APIs, background worker processes, and Azure services

Coach and support developers, including teams transitioning from legacy technologies

Promote best practices, architecture patterns, and code quality

Coordinate across teams and act as a technical reference point

Define and manage application lifecycle and upgrade strategies across .NET versions

Ensure quality, security, and compliance of implementations

Contribute hands-on to technical and migration work (approximately 50%)

Required skills

Strong experience in C# and .NET

Experience with API development and background processing

Solid experience with Azure, especially Service Bus (critical) and Blob Storage

Strong knowledge of SQL Server and Entity Framework

Experience in technical leadership and coaching

Background in migration or modernization projects

Profile

Senior profile with at least 8 years of experience and a Tech Lead mindset

Hands-on while also capable of providing structure and vision

Strong communication skills, proactive, and able to challenge decisions

Comfortable working across multiple teams

Languages

French and English are required

Dutch is a plus

Role balance

Approximately 50% technical (architecture, migration) and 50% leadership (coordination, coaching)