Senior IT Security Architect

Imagine being the go-to security architect other IT architects and projects rely on for cloud and OT. You set direction, shape processes, and teach.

We are looking for an experienced Senior IT Security Architect to further enhance the security of our operational technology and support the integration with IT security.

Welcome to the IT Security Department

We are a Taastrup-based department dedicated to improving IT security and to protecting DSB's critical systems and infrastructure.

IT Security consists of nearly 20 specialists, organized into three teams

• Trusted Advisors – your new team: we support and advise teams throughout the organization and resolve complex IT security challenges. You will collaborate with experienced colleagues and contribute to the development of robust security solutions
• Governance, Risk & Compliance: Ensures that we comply with regulatory requirements and standards
• SOC & Pentest: Security Operations Center, which monitors, analyzes, and simulates attacks

If you want to work where your efforts benefit thousands of people every day, IT Security Department at DSB is the right place for you. Here, you help ensure that trains run safely and reliably.

What is the job about?

As a senior IT security architect, you will be an important part of the work to develop and refine DSB's IT security architecture.

Your role and responsibilities as a trusted advisor cover

• Advising internal teams to embed IT security in solutions and guiding on best practices
• Designing and implementing robust security architectures with stakeholders and vendors to protect DSB's critical systems and ensure safe operations
• Ensuring systems comply with IT and cybersecurity standards, regulations, and legal requirements

A typical workday may start with getting an overview of today’s activities and checking in with your team lead over a nice cup of coffee.

Subsequently, your day might offer workshops with IT Operations on the implementation of security solutions or analyses of existing systems to ensure compliance and robustness.

Next up is meeting with a GRC colleague to document risks related to a recently introduced SaaS.

Before the day ends, you update your Jira tasks to make sure you know where to start out tomorrow morning.

Are you our new Senior IT Security Architect?

We’re looking for someone motivated to take a key role in securing our critical systems - through workshops, teaching, advising, and deep technical work.

You have a solid professional insight into both IT and OT security architecture.

You thrive in complex settings and bring teams together. You’re a valued partner for internal IT projects and business stakeholders.

We imagine that you have

• Experience with security, including risk assessment and securing industrial control systems
• A profound interest in IEC 62443 and TS-50701
• Good communication skills and fluency in English
• Abilities in speaking and writing Danish, or well along in the process of learning
• An academic background within IT and a particular focus on IT security

What can DSB offer you?

• Free travel with DSB
• Flexible working hours and the option to work from home a few days a week
• Access to DSB's gym and PureGym
• Pension plan and health insurance
• Subsidized lunch program and the option to buy takeaway meals

Learn more about IT and Digitalization at DSB.

Apply now

The application deadline is December 1, 2025.

We conduct interviews continuously, so please upload your motivation for applying (which can also be a video), CV, and exam papers, if applicable, as soon as possible.

Questions? Please call CISO Ebbe B. Petersen on tel. +45 2894 7233

Recruitment Process

If you move forward, you can expect two interviews. The final interview comprises a behavioral test, an analytical test and occasionally a case. We use digital reference checks with your consent.

Prior to employment, please submit a criminal record certificate (straffeattest).

Workplace: Telegade 2, Høje Taastrup