Freelance .NET/Azure Developer

We are looking for a senior .NET / Azure Developer to strengthen a team responsible for the backend of our in-house identity orchestration platform, with a strong focus on Identity & Access Management (IAM).

In this role you maintain and further develop existing .NET components while driving the move to a modern, cloud-native architecture on Azure. You contribute to IAM-related evolutions, API security and new Azure-based modules.

Description and Tasks

• You support and further develop the in-house identity orchestration platform and take ownership of related analysis, development, maintenance and follow-up.

• You help move existing .NET components toward a cloud-native target architecture on Azure by understanding the current stack, identifying reusable components, and translating functional needs into maintainable cloud-ready solutions.

• You contribute to the design, development and maintenance of Azure components such as Azure Functions, Azure Container Apps and Azure Key Vault, integrating with REST services and identity providers.

• You support IAM-related development topics such as user provisioning, API security, token conversion with user context, and identity governance (IGA) changes.

• You follow up IAM-related incidents and support vulnerability management for the components you own.

• You apply IAM and security engineering expertise to support secure user management, access control and API integration.

• Maintain & implement solutions within the agreed timeline and quality standards.

• Execute component and integration tests.

• Document implementations and changes.

• Support analysts & designers in converting functional specifications into technical solutions.

• Deliver 3rd-line support.

• You follow technical evolutions and can independently conduct research with the support of an application architect.

• You understand the technical architecture and re-use existing technical components.

• You assist in scheduled production deployments outside office hours.

Profile and Experience

Profile

• Senior developer with proven, relevant experience.

• Significant experience in .NET back-end / back-office development.

• Broad IT knowledge and interests.

• Strong planning skills; you dare to challenge the AS-IS and work result-driven.

• You work accurately and plan meticulously.

• You are solution-oriented, communicative and a real team player.

• You have a hands-on mentality and an eye for quality, and you take initiative to optimize development processes.

• Comfortable working with distributed, international teams.

• You can work independently in a complex application landscape and bring continuity to recurring changes

Locatie: Antwerpen (2dagen onsite)

Periode: asap – 31/12/2026 (verlengbaar)

Required Experience (must-have)

• .NET / C# back-end development.

• Azure development and cloud-based service development (Azure Functions, cloud-native services). Azure experience is a must.

• SQL — relational database design with stored procedures and functions (T-SQL). SQL is a must.

• REST APIs — designing, building and consuming RESTful services (JSON).

• Experience with CI/CD pipelines in Azure DevOps to deploy solutions across environments.

• Secure cloud development practices, including Azure Key Vault for sensitive information.

• Source control with Git.

• Experience with Agile methodology and a DevOps culture.

• Analysis, design, coding and implementation of customized object-oriented applications.

Nice to Have

• SCIM — experience with SCIM-based user provisioning (most valued nice-to-have).

• OIDC / OAuth — experience with modern authentication and authorization protocols.

• Knowledge of IAM concepts such as identity governance (IGA), user provisioning and token conversion with user context.

• Experience or interest in Keycloak (or other identity providers), Open Policy Agent and fine-grained access control.

• Experience delivering IAM-related development or maintenance in a secure customer or partner portal environment.

Certificates

• AZ-900 - Azure Fundamentals

• AZ-204 - Azure Developer Associate