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.NET Software Engineer Lead

Choosing Capgemini means choosing a company where you will be empowered to shape your career in the way you’d like, where you’ll be supported and inspired by a collaborative community of colleagues around the world, and where you’ll be able to reimagine what’s possible. Join us and help the world’s leading organizations unlock the value of technology and build a more sustainable, more inclusive world. 

YOUR ROLE

As a .NET Tech Lead at Capgemini, you drive the design and delivery of scalable, enterprise-grade software solutions while also contributing hands-on where needed. You combine deep technical expertise with leadership capabilities, guiding teams in building robust, secure and future-proof applications.

You operate in modern engineering environments at the intersection of cloud, microservices and AI-enabled development, acting as a key technical partner for stakeholders while ensuring alignment with architectural standards, best practices and business goals.

Key responsibilities

  • Lead the design and development of scalable .NET solutions, ensuring alignment with functional and non-functional requirements.
  • Define and guide the implementation of architecture patterns (microservices, event-driven, cloud-native) and best practices.
  • Act as technical lead and coach for development teams, ensuring quality, consistency and continuous improvement.
  • Take technical ownership of end-to-end delivery, from refinement and estimation through implementation, deployment and production support.
  • Ensure high-quality delivery through testing (unit & integration), code reviews, DevOps practices and CI/CD.
  • Drive adoption of modern engineering approaches, including AI-assisted development and security best practices.

YOUR PROFILE

  • Strong expertise in C# and modern .NET, with proven experience designing and delivering enterprise-grade solutions
  • Deep knowledge of ASP.NET Core, Web APIs, REST/OpenAPI, and secure application design (OAuth2, OIDC, JWT, OWASP)
  • Solid experience with Azure cloud services, including integration patterns (e.g. messaging such as Service Bus), networking concepts and DevOps (CI/CD, Git)
  • Strong architectural mindset with experience in patterns & best practices, data platforms (SQL Server) and modern engineering practices (testing, scalability, performance)
  • Language proficiency in Dutch and/or French and English.

 

WHAT YOU'LL LOVE ABOUT WORKING HERE

  • At Capgemini Belgium we offer flexibility in more than one way: next to our hybrid way of working, where we offer you can work 70% from home, we also offer our flex abroad program. With this program you can work up to 45 days abroad, this to maintain a good work-life balance.
  • Next to this we also offer following additional benefits:
    • Net expenses
    • Company car or mobility budget (whatever works best for you)
    • Health insurance
    • Meal vouchers
    • Pension plan
    • Eco vouchers from €250/year.
    • A flex plan where you can buy extra days off, update your insurance or buy home office supplies.
    • 32 vacation days + Bank holidays.

ABOUT CAPGEMINI

Capgemini is an AI-powered global business and technology transformation partner, delivering tangible business value. We imagine the future of organizations and make it real with AI, technology and people. With our strong heritage of nearly 60 years, we are a responsible and diverse group of 420,000 team members in more than 50 countries. We deliver end-to-end services and solutions with our deep industry expertise and strong partner ecosystem, leveraging our capabilities across strategy, technology, design, engineering and business operations. The Group reported 2024 global revenues of €22.1 billion.
Make it real | www.capgemini.com
Ref. code:  496867
Posted on:  8 Jun 2026
Experience Level:  Experienced Professionals
Contract Type:  Permanent
Location: 

Diegem, BE

Brand:  Capgemini
Professional Community:  Software Engineering

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