Senior Backend Developer - Defence HQ Platform team

Systematic; Aarhus; On-site; DKK 700,000 - 900,000; Full time

Benefits offered by this job

Physiotherapist massages

In-house hairdresser

Sports clubs

Padel court

Canteen with healthy dishes

ARoS +1 access

Shopping discounts

Job summary

Systematic Aarhus seeks a Senior Backend Developer for the Platform team to design and build the scalable foundation used across the SitaWare Suite. You’ll work at the intersection of Java backend development and infrastructure, shaping cluster tooling, installer automation and backend services.

You’ll join a 5-person, international Platform team in Aarhus, collaborating with QA and mentoring juniors, while maintaining Linux environments and Docker/Kubernetes workflows to ensure robust

Qualifications

• BSc or MSc in Computer Science, Engineering, or a related field.
• Hands-on experience with Docker and Kubernetes, including configuring and operating clusters.
• Comfort with Linux systems administration.
• Experience with Java, or willingness to learn it alongside infrastructure skills.
• Independent but collaborative communication style.
• Experience in a Scrum environment.
• Fluent English, both spoken and written.

Responsibilities

• Configure, maintain and improve Linux environments, Docker-based workflows, and Kubernetes clusters used by our product installer, build pipeline, and test environments.
• Develop new backend functionality, primarily in Java.
• Design and implement platform features across cluster tooling, installer automation, and backend services.
• Troubleshoot, optimize, and solve complex problems across codebase and infrastructure.
• Collaborate with QA to maintain high code quality as the product evolves.
• Mentor junior colleagues as they grow into the team.

Skills

Docker

Kubernetes

Java

Linux

Scrum

English

Education

BSc/MSc in CS or related field

Tools

Docker

Kubernetes

Linux

Job description

Senior Backend developer - Platform team

Our SitaWare products help Defence organizations operate confidently in complex, high-stakes environments, often over networks with low bandwidth and high latency. As a Senior Backend Developer on our Platform team, you'll design and build the foundation that makes this possible: a scalable platform used by admins and users across our entire product suite.

The job

You’ll work at the intersection of Java backend development and infrastructure, with influence over both the platform and how the team operates. Specifically, you will:

• Configure, maintain and improve Linux environments, Docker-based workflows, and Kubernetes clusters used by our product installer, build pipeline, and test environments,
• Develop new backend functionality, primarily in Java,
• Design and implement new platform features across cluster tooling, installer automation, and backend services,
• Troubleshoot, optimize, and solve complex problems across the codebase and infrastructure,
• Work closely with QA to keep code quality high as the product evolves, and
• Mentor junior colleagues as they grow into the team.

Joining the team

You’ll join a 5-person, international Platform team based in Aarhus, responsible for the scalable platform layer underneath the entire SitaWare Suite, the part of the system that quietly makes everything else work, even under difficult network conditions.

Your qualifications

• You hold a BSc or MSc in Computer Science, Engineering, or a related field, with solid backend development experience.
• You have hands‑on experience with Docker and Kubernetes, including configuring and operating clusters.
• You’re comfortable working with Linux systems administration.
• You have experience with Java, or are ready to build that up alongside your infrastructure skills.
• You work well independently but default to open, collaborative communication.
• You’ve worked in a Scrum environment, and
• You communicate fluently in English, spoken and written.

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 Aarhus

• Here, you can take advantage of a range of on‑site perks from physiotherapist‑led massages and an in‑house hairdresser to sports clubs, game tables and even our own padel court.
• Our canteen is a standout feature, serving a daily selection of delicious and healthy dishes.
• Beyond the office, you will also enjoy benefits like free ARoS +1 access and various shopping discounts.

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.

Julie Lysbjerg Molzen

Talent Acquisition Partner

Location

Aarhus C, DK, 8000

Business Unit

Defence

Division

Defence Product Development