Senior.NET Full-Stack Developer
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Looking for a challenging project as a freelance .NET Developer? Itenium connects you with projects that fit your expertise and preferences, so you can focus on delivering quality while we take care of the right opportunity.
- Build and evolve backend services and APIs with .NET and ASP.NET Core
- Develop modern, responsive UI features using TypeScript and a front-end framework (Angular/React/Vue)
- Design clean, maintainable architectures using proven patterns and best practices
- Work with data: SQL, Entity Framework, LINQ, performance and reliability
- Deliver production-ready software via testing, code reviews, and CI/CD
- Collaborate with agile client teams, translating business needs into working features end-to-end
Who we are looking for
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Experience
At least 5 years with . NET Core /ASP. NET Web API, with a clean code mindset.
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Fullstack Mindset
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Strong in Entity Framework, LINQ, and async/await.
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DevOps-Aware
Familiar with CI/CD, DevOps, Design Patterns, Dependecy Injection.
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Team & Ownership
Fluent in Dutch, comfortable in English, collaborative and quality-driven.
What our freelancers say…
Many thanks to the Itenium family for the great support and smooth collaboration. I truly hope we can work together again.
Freelancer ,
In a business of faceless middlemen, this was truly an honest and hands-on approach. Itenium helped me launch my career to the next level, thanks guys
Dan
Freelancer ,
What I enjoy most in our collaboration is the open communication, the people focused attitude and knowing I can rely on Itenium whenever support is needed.
Freelancer ,
Ready to apply?
Excited about this role? We’d love to hear from you
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Founded in 2018 by consultants, for consultants, Itenium is driven by the belief that things can always be better (nominated for Trends Gazellen 2025). From our office in Mechelen, our 50+ consultants support companies across Belgium to build software solutions that truly work.
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Our expertise
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Our approach
Quality first—with real attention to our people. Our consultants are true experts, above-average senior IT profiles. We invest in personal growth through training and one-on-one coaching. Our motto says it all: “committed to pushing you forward.”
Still haven’t found what you’re looking for? We’ve got plenty of exciting roles waiting for you.
Itenium connects you with projects that fit your expertise and preferences, so you can focus on delivering quality while we take care of the right opportunity.
label Freelancer
Are you a Data Engineer who wants to make real impact with data?
At Itenium, you help build the data backbone of our clients. You turn raw data into reliable insights, create scalable pipelines and work with the latest cloud technologies.
Apply spontaneously
We’re always on the lookout for talented and passionate individuals to join our team. Don’t see the perfect role listed? Send us your spontaneous application and discover what we can create together