Senior .NET Developer (freelance)
We are looking for a Senior .NET Developer to work in a technically demanding environment where legacy systems coexist with modern platforms (broadcasting). This role is not about maintaining outdated code. It is about navigating complexity, improving systems, and making pragmatic engineering decisions across a diverse technology landscape.
What You’ll Work On
- Maintain and evolve a mix of legacy and modern applications
- Work across multiple platforms including cloud and private infrastructure
- Contribute to system modernisation while keeping critical systems stable
- Handle distributed architectures and integration challenges
- Improve performance, scalability, and reliability of existing systems
- Collaborate with teams to standardise and streamline development practices
You will work with a wide range of technologies:
- Backend: .NET Framework, .NET Core / .NET
- Cloud & Infrastructure: AWS, Azure, Private Cloud
- CI/CD & DevOps: Azure DevOps, GitHub Actions, TeamCity, Octopus Deploy
- Messaging & Streaming: Kafka
- Databases: MS SQL Server, MongoDB, MariaDB
- Version Control: Git-based workflows
This is a diverse tech environment. You need to be comfortable switching contexts and making sense of systems that were built at different times with different approaches.
What Makes This Role Different
- You will deal with real-world complexity, not greenfield-only projects
- Systems are business-critical and cannot simply be rewritten
- You will balance short-term fixes with long-term improvements
- Decisions matter and have immediate impact
What We Expect
- Strong experience with .NET ecosystems across different versions
- Ability to work with both legacy and modern codebases without bias
- Solid understanding of distributed systems and integration patterns
- Experience with cloud platforms such as AWS or Azure
- Comfort working in fast-moving environments with shifting priorities
- Problem-solving mindset with a focus on practical outcomes
Who This Role Fits
This role suits engineers who:
- Prefer solving hard problems over working on polished greenfield projects
- Can operate in ambiguity and still deliver results
- Are comfortable with a fast-paced environment where priorities evolve
- Take ownership of systems rather than just writing code
Summary
If you are looking for a clean, predictable environment, this is not it.
If you want to work on complex systems, make real impact, and handle technical challenges daily, this role will suit you. Send me a message!
Key Skills
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- Posted
- Apr 10, 2026
- Type
- Contract
- Level
- Mid-Senior
- Location
- Hilversum
- Company
- Digital Green B.V.
Industries
Categories
Related Jobs
3 roles aligned with this opportunity
Lead .NET developer
2026-04-10
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2026-04-11
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