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- Tasks: Design and support secure infrastructure for mission-critical systems in defence.
- Company: Join a leading organisation delivering secure technology for complex environments.
- Benefits: Enjoy flexible working, private healthcare, and career development opportunities.
- Why this job: Make a real-world impact while working on high-availability platforms.
- Qualifications: Experience in infrastructure engineering, Windows Server, and Red Hat Linux required.
- Other info: Diverse workplace with clear pathways for career growth and mentoring.
The predicted salary is between 36000 - 60000 £ per year.
This organisation delivers secure, mission-critical technology that underpins complex defence environments. This role sits at the heart of that mission — ensuring resilient, compliant infrastructure that genuinely makes a difference.
Role Overview:
- Location: UK-based (flexible working available)
- Industry: Defence / Secure Technology
What You’ll Be Doing:
- Designing and supporting secure infrastructure for complex, high-availability platforms.
- Bridging IT and OT environments to keep mission-critical systems running smoothly.
- Managing and optimising Windows Server and Red Hat Linux estates.
- Building and maintaining virtualised environments using VMware and Hyper-V.
- Overseeing IT assets, with automated monitoring and reporting baked in.
- Embedding cyber best practice, running vulnerability assessments, and meeting strict compliance standards.
Main Skills Needed:
- Solid background in infrastructure engineering or systems administration.
- Strong hands-on experience with Windows Server and Red Hat Linux.
- Proven use of virtualisation technologies (VMware, Hyper-V).
- Good understanding of cybersecurity, vulnerability management, and secure design.
- Exposure to regulated or high-assurance environments (defence experience a plus).
- Experience with asset management and monitoring/automation tools.
What’s in It for You:
- Flexible working options, including compressed fortnights.
- Private healthcare and cash health plan.
- Holiday buy and sell scheme.
- Clear career development pathways, training, and mentoring.
- The chance to work on projects with real-world national impact.
- Support through the UK SC security clearance process (Sole UK Nationals only).
If you’re nodding along, let’s take the next step.
We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
Infrastructure System Administrator employer: Addition
Contact Detail:
Addition Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Infrastructure System Administrator
✨Tip Number 1
Network like a pro! Reach out to folks in the defence and secure technology sectors. Attend industry events or webinars, and don’t be shy about connecting on LinkedIn. We all know that sometimes it’s not just what you know, but who you know!
✨Tip Number 2
Show off your skills! Create a portfolio or a personal project that highlights your experience with Windows Server, Red Hat Linux, and virtualisation technologies. This can really set you apart from the crowd and give us a glimpse of what you can bring to the table.
✨Tip Number 3
Prepare for the interview like it’s a mission! Research the company’s projects and values, especially around cybersecurity and compliance. We want to see that you’re genuinely interested and ready to contribute to our mission-critical work.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we love seeing candidates who take that extra step to engage with us directly.
We think you need these skills to ace Infrastructure System Administrator
Some tips for your application 🫡
Tailor Your CV: Make sure your CV reflects the skills and experience mentioned in the job description. Highlight your background in infrastructure engineering and any hands-on experience with Windows Server and Red Hat Linux. We want to see how you can bridge IT and OT environments!
Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Use it to explain why you're passionate about secure technology and how your experience aligns with our mission. Don’t forget to mention your familiarity with virtualisation technologies like VMware and Hyper-V.
Showcase Your Cybersecurity Knowledge: Since cybersecurity is key for this role, make sure to include any relevant experience you have with vulnerability management and secure design. We’re looking for someone who understands the importance of compliance standards in defence environments.
Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you don’t miss out on any important updates. Plus, we love seeing applications come in through our own platform!
How to prepare for a job interview at Addition
✨Know Your Tech Inside Out
Make sure you brush up on your knowledge of Windows Server and Red Hat Linux. Be ready to discuss your hands-on experience with these systems, as well as any virtualisation technologies like VMware and Hyper-V. The more specific examples you can provide, the better!
✨Understand Cybersecurity Fundamentals
Since this role involves embedding cyber best practices, it’s crucial to demonstrate your understanding of cybersecurity and vulnerability management. Prepare to talk about any past experiences where you’ve implemented security measures or conducted vulnerability assessments.
✨Showcase Your Problem-Solving Skills
This position is all about ensuring resilient infrastructure. Think of scenarios where you’ve had to troubleshoot or optimise systems under pressure. Sharing these stories will highlight your ability to keep mission-critical systems running smoothly.
✨Familiarise Yourself with Compliance Standards
Given the nature of the defence industry, being knowledgeable about compliance standards is key. Research relevant regulations and be prepared to discuss how you've ensured compliance in previous roles, especially in regulated environments.
