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Senior .NET Developer for Intelligence & National Security

Systematic.com

Office

Copenhagen K, DK

Full Time

Senior .NET Developer for Intelligence & National Security 

Work across the intelligence and national security domain where you, across projects, will make a real impact in a collaborative, quality-focused environment.

The job
Working as a .NET Developer, you'll be responsible for delivering high-quality features while upgrading existing functionality for customers within Intelligence and National Security in Denmark. You'll collaborate closely with architects, developers and customers to create user-centred solutions with a strong focus on quality, security and stability. 

You Can Look Forward To:

  • •    Developing new features with high focus on security and quality
  • •    Supporting and maintaining existing functionality to ensure system continued stability and performance
  • •    Working with a variety of technologies including newer versions of C#/.NET, Angular, and Kubernetes


The team
You'll be part of a team of 8 people situated in Aarhus and Copenhagen, working across 3 different projects. The team is on a joint mission to develop the best solutions for our national security stakeholders. For us, it's about precision, quality, and knowing that your work directly contributes where it matters. Our culture is defined by thorough, process-minded approaches and independent thinking where your skills will be a key driver for success.

What you bring
We are looking for a colleague interested to work across multiple projects and who is driven by creating great functionality and value for our customers. Depending on your interest, it will be possible to work in a customer-facing role. We imagine you have: 

  • •    A bachelor’s degree in IT Engineering or Computer Science 
  • •    3+ years of professional software development experience post studies
  • •    Experience in C#/.NET and newer Angular frameworks 
  • •    An interest in working with Kubernetes, Docker, Linux, PostgreSQL, and SQL 
  • •    Fluent English skills  


Please note that you must be able to present a clean criminal record and have lived in a NATO and/or an EU country for the past seven years as we work with security-classified projects. Read more here.

Welcome to Systematic Copenhagen


When you join us in Copenhagen, you're not just getting a desk at one of the city’s best locations—you’re stepping into a workplace where community matters. Our Employees Club keeps things lively with monthly social events, and our office catering makes sure you’re always well taken care of. Whether you’re into casual games or just good company, you’ll find both at our foosball table or during our relaxed Friday bar gatherings.
Never stop developing 


Systematic is uniquely people-centric, truly international and proudly rooted in Denmark with more than 1100 employees. Together, we write intelligent and innovative code to drive progress and improve lives. We develop IT solutions that make a real difference where it matters most. This is why we never stop developing. Here, there is room to be professional and personal. It is not just a place to work but a place to belong.

Start your development here

We will be assessing applications on an ongoing basis as we wish to welcome our new colleague as soon as possible, so click Apply Now and send us your CV today. If you have any questions, you are always welcome to contact us on tel. +45 8943 2000 and ask for Sune Haakonsson. 

Get In Touch

Laura Sejerup Madsen

P&C Business Partner

Senior .NET Developer for Intelligence & National Security

Office

Copenhagen K, DK

Full Time

September 17, 2025

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Systematic

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