We’re hiring for a fast-growing enterprise in the digital services space, and we’re looking for a Senior .NET Application Maintenance Engineer with strong troubleshooting skills, backend expertise, and a sharp eye for performance optimization.

If you enjoy digging into production issues, fine-tuning systems for efficiency, and making sure critical business applications stay rock-solid – this one’s for you.

What You’ll Do:

• Maintain and optimize enterprise applications built on ASP.NET, .NET Core, and .NET Framework

• Troubleshoot complex bugs in both application and database layers

• Improve performance with query tuning and stored procedure optimization

• Collaborate closely with cross-functional teams to resolve production issues

• Manage deployments via Azure DevOps, Jenkins, or TeamCity

• Communicate progress and technical insight to stakeholders effectively

What We’re Looking For:

• Senior-level experience with .NET (C#), ASP.NET, .NET Core, and MSSQL

• Strong debugging skills and experience improving legacy systems

• Familiarity with modern build/deployment pipelines (CI/CD)

• Excellent communicator – able to bridge tech and non-tech conversations

• Independent and accountable, with a proactive mindset for continuous improvement

Bonus points for:

• Experience in regulated industries or critical infrastructure

• Scripting skills (PowerShell, Bash, etc.)

• Familiarity with monitoring tools like New Relic, App Insights, or Datadog

Offer:

• Start: ASAP

• Duration: 6 months + extensions (long-term opportunity)

• Location: Utrecht, Hybrid – 2 days/week on-site

• Hours: Full-time, 40 hours/week

• Contract Type: Freelance or Detachering

Apply Now:
If this sounds like you, apply now or get in touch directly:
jawwad.saleem@darwinrecruitment.com
020 305 0062

Note: For this role, we welcome applicants already located in the Netherlands. HSM visa sponsorship is possible.

Darwin Recruitment is acting as an Employment Business in relation to this vacancy.

Jawwad Saleem