Senior Specialist, IT Security

Systematic A/S; Aarhus; Hybrid; DKK 600,000 - 900,000; Full time

Benefits offered by this job

Employees Club perks

In-house massages

Job summary

Systematic A/S is seeking a Senior Security Specialist to join GRIT Security in Aarhus (open to Copenhagen). You will cover security monitoring, threat detection, incident response and vulnerability management with autonomy and variety in day-to-day work.

The role sits with GRIT Security across Aarhus and Copenhagen, shaping detection playbooks and sharing knowledge while maintaining safe, compliant systems. Fluent English required.

Qualifications

• 4–6 years of hands-on IT security experience (SOC/CERT).
• Experience in security operations and incident response.
• Solid understanding of security configurations, monitoring and incident response.
• Hands-on with Microsoft Defender and Azure security tech.
• Comfort with networking, Windows and Linux, MITRE ATT&CK familiarity.
• Scripting to automate tasks (Python/PowerShell).

Responsibilities

• Investigating and analysing security events escalated by our SOC.
• Containing and resolving security incidents end to end, documenting findings.
• Developing and tuning security configurations, detection rules, use cases and playbooks.
• Carrying out proactive threat hunting and contributing to vulnerability management and compliance.
• Advising and supporting other teams, and sharing security knowledge across the organisation.

Skills

Security operations

Incident response

Threat detection

Vulnerability mgmt

Python

PowerShell

Tools

Microsoft Defender

Azure

Job description

Senior Security Specialist

Help protect the systems that matter most - in defence, healthcare and the public sector. Join a highly skilled security team where autonomy, variety and hands‑on incident response define your everyday, and where you will help shape how we detect and respond to threats.

The job

As a Senior Specialist in GRIT Security, you will play a key role in keeping Systematic safe and compliant. You will work across security monitoring, threat detection, incident response and vulnerability management - with plenty of variety in your day‑to‑day work. The role is based in Aarhus, but we are also open to candidates based in Copenhagen.

• Investigating and analysing security events escalated by our SOC, digging deeper where needed
• Investigating, containing and resolving security incidents end to end, and documenting findings and lessons learned
• Developing and tuning security configurations, detection rules, use cases and response playbooks
• Carrying out proactive threat hunting and contributing to vulnerability management and compliance work
• Advising and supporting other teams, and sharing your security knowledge across the organisation

Joining the team

You will join GRIT Security, an established and specialised team based across our offices in Aarhus and Copenhagen, working closely with our Security Operations Centre. We combine proactive security engineering with day‑to‑day monitoring and response, and every team member carries real autonomy and shared responsibility for keeping Systematic safe. Work runs in sprints, with a healthy mix of planned tasks and emerging priorities - so no two days look quite the same. Knowledge‑sharing is central to how we work, so whatever the day brings, you will not be tackling it alone.

Your Qualifications

You have around 4–6 years’ experience working with IT security, ideally including hands‑on experience in security operations and incident response - for example, in a SOC, CSIRT or CERT. You have a solid understanding of security configurations, monitoring and incident response, with hands‑on experience in Microsoft security technologies, particularly Microsoft Defender and Azure. You are comfortable working across networking, Windows and Linux, and know your way around common attack techniques such as the MITRE ATT&CK framework. You use scripting, for example: Python or PowerShell, to automate parts of your work.

• Calm, structured and analytical, with strong judgement under pressure
• A strong team player who communicates clearly with both technical and non‑technical stakeholders

Fluent written and spoken English is required.

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

At our Aarhus office, you can look forward to joining our Employees Club, which offers nearly 100 events a year of both social and professional character. 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.