From NATO and the British Army to Fortune 500 companies and national governments, our technology helps organizations prepare for cyber warfare, defend critical infrastructure, and train the next generation of cybersecurity professionals. Operating in over 60 countries, we are the leading European cyber range provider, trusted by those who protect critical systems.

Joining CybExer means doing meaningful work that shapes the future of digital defense. Whether enabling nationwide cyber exercises, supporting financial institutions with resilience, or helping students build real-world skills, you will be part of something significant. If you want to work at the forefront of cybersecurity and AI warfare in a team where ideas are heard and initiative is valued, CybExer is the place for you.

🚀 We’re Hiring: Senior Cyber Range Engineer

We’re looking for a Senior Cyber Range Engineer to join our infrastructure team and take a technical lead role in preparing and supporting global events.

📍 Tallinn HQ (on-site for the first 3–6 months, then hybrid/remote possible)

🔑 What You’ll Do

• Take the lead in preparing and supporting cyber range deliveries.
• Deploy and adapt training and exercise content to meet customer needs.
• Work with a broad spectrum of IT systems:
• Networks, routers, firewalls
• Linux & Windows servers, desktop systems
• Core services (DNS, mail, web, Active Directory)
• Security tools (Arkime, Security Onion, Elastic Stack)
• Container-based content (Docker)
• Use Ansible and automation tools to build and deploy content across VMware vSphere and AWS (with vSphere as the main platform).
• Troubleshoot, problem-solve, and ensure smooth delivery during live events.
• Collaborate with international teams and (if you’re up for it) travel to deliver events worldwide.

🎯 What We’re Looking For

• Strong systems engineering background (Linux, Windows, networking).
• Practical experience with VMware vSphere, plus working knowledge of AWS.
• Hands-on experience with automation (Ansible or similar).
• Confidence working with diverse IT systems and adapting quickly to new technologies.
• Ability to lead technical troubleshooting in dynamic, high-pressure environments.
• Fluency in English (written and spoken).
• Must be a citizen of an EU or NATO member country.
• Soft skills: Able to take ownership and responsibility, work independently after onboarding, and lead without requiring micromanagement or constant hand-holding.

➕ Bonus Points If

• You have strong “human interface” skills: able to express yourself fluently in spoken English and interact confidently with customers during technical meetings.
• You’ve already experienced cyber exercises or events, either as a participant or an organizer.

🔮 Looking Ahead

As you grow into the role, you’ll also have opportunities to:

• Take lead roles in developing and improving our cyber range platforms and infrastructure.
• Contribute to automation, scalability, and new features for future exercises.
• Help shape the technical direction of how CybExer delivers cutting-edge cyber range experiences globally.

🌍 Why Join Us

• Be part of a team delivering globally recognized cyber defense events.
• Work on a wide variety of systems and challenges — no two events are the same.
• Opportunity to travel worldwide and work with diverse customers.
• Competitive package, career growth, and a chance to make a global impact.

📩 Interested? — we’d love to hear from you! Please send your CV highlighting your relevant experience and skills as well as a short introduction of yourself to [email protected].