Join our Sitaware Extensions Program and help deliver customised integrations and extensions to Systematic's defence product suite, from sensor interfaces to radio drivers. As Senior Software Developer, you will combine software design, implementation and testing in a close-knit team working in an exciting domain.
You will contribute to the delivery of high-quality integrations and extensions, from requirements analysis through software design, implementation and testing. Beyond hands-on development, you will help apply and improve our development process, and share your knowledge to support the team's growth.
In short, you can look forward to:
You will be part of the Product Extension Team of around seven developers, test engineers and architects, part of the Sitaware Extensions Program within Defence Services. The team delivers customised integrations and extensions to Systematic's defence product suite, focusing on software- and hardware-related integrations such as sensor interfaces, radio drivers and interoperability with external systems, and continuously improves its own testing and development practices, methods and tools. This is a newly created position, so you will have real scope to shape how the role develops as the team continues to grow.
To succeed in this role, you bring several years of software development experience gained in a structured, team-based environment, along with:
Alongside this, we value:
Onboarding includes two three-day stays in Aarhus, and you should expect occasional travel of around two to ten days a year, mostly within Europe. Some onsite hardware testing may also be required, depending on integration needs.
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.
When you join us in Copenhagen, you're not just getting a desk at one of the city's best locations—you are stepping into a workplace where community matters. Our Employees Club keeps things lively with monthly social events, and our office catering makes sure you are always well taken care of. Whether you are into casual games or just good company, you will find both at our foosball table or during our relaxed Friday bar gatherings.
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.
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 Andreas Markussen, Senior Manager.
Get in touch
Tobias Falck Jensen
Talent Acquisition Partner

Systematic is Denmark's largest privately owned software company and has been developing IT solutions since 1985. Our software is used to manage complex data and to make critical decisions in sectors such as defence, healthcare, and utilities. With over 1 million daily users globally and customers in more than 50 countries, we deliver software that makes a difference.
Our solutions include the defence software SitaWare, which is used by over 50 nations and NATO for communication, coordination, and mission planning. Our healthcare solutions, like Columna, are used in the care sector and in hospitals worldwide.
We are headquartered in Aarhus, Denmark, and have 1,100+ employees across 13 international offices.