OT System Administrator in Cardiff, Wales

OT System Administrator in Cardiff, Wales

Cardiff +1 Full-Time No home office possible
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At a Glance

  • Tasks: Manage and secure critical infrastructure while supporting a major cyber transformation programme.
  • Company: Join a unique nonprofit organisation focused on cyber and infrastructure uplift.
  • Benefits: Competitive day rate, hybrid work model, and opportunities for professional growth.
  • Other info: Diverse and inclusive workplace with strong support for career development.
  • Why this job: Make a real-world impact on national infrastructure and enhance your cybersecurity skills.
  • Qualifications: Experience in system administration, security, and managing Windows/Linux environments.

Operational Technology Systems Administrator/Analyst - 12 Months Contract - Day Rate £450 - £485 (Inside IR35) - Hybrid (1 Day a week South Wales)

The Opportunity

Yolk Recruitment Public Sector & Not-for-Profit team has partnered with a very unique nonprofit organisation who are undergoing a significant cyber and infrastructure uplift across their operational technology environment. We're looking for a hands-on System Administrator with a strong focus on security, working across critical national infrastructure.

What you'll be doing:

  • Supporting a large-scale cyber programme aligned to regulatory standards (E-CAF)
  • Managing and securing core infrastructure across: Windows & Linux servers, SQL databases, Cisco networks, WAN and data centre environments
  • Driving patching, vulnerability management and system hardening best practice
  • Supporting rollout and optimisation of security tooling including EDR and intrusion detection
  • Integrating and maintaining Active Directory and identity governance processes
  • Supporting incident resolution and maintaining service continuity across critical systems
  • Contributing to secure system design, documentation and UAT processes
  • Working closely with internal security teams and external partners

What we're looking for:

  • Strong system administration experience across Windows, Linux and network environments
  • Solid understanding of infrastructure security, patching and hardening
  • Experience with Active Directory and identity/access management
  • Knowledge of SQL Server and enterprise environments
  • Ability to manage multiple priorities in a structured (ITIL-driven) environment
  • Strong problem-solving skills and a proactive mindset

Nice to have:

  • Experience in regulated environments (e.g. NIS-CAF)
  • Exposure to OT environments, SCADA, PLCs or telemetry systems
  • Utilities or infrastructure sector experience
  • Understanding of cyber security tooling (EDR, IDS, backup solutions)

Why this role?

  • Work on critical infrastructure with real-world impact
  • Be part of a major cyber transformation programme
  • Blend of project work and operational ownership
  • Strong long-term investment in technology and security

Locations

Cardiff Wales

OT System Administrator in Cardiff, Wales employer: Yolk Recruitment Limited

Yolk Recruitment is an exceptional employer, offering a unique opportunity to work within a nonprofit organisation dedicated to enhancing critical national infrastructure. With a strong focus on employee growth and a commitment to diversity, Yolk fosters a collaborative work culture that values innovation and security. Employees benefit from engaging in impactful projects while enjoying a hybrid work model that promotes work-life balance, making it an ideal place for those seeking meaningful and rewarding employment.
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Contact Detail:

Yolk Recruitment Limited Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land OT System Administrator in Cardiff, Wales

✨Tip Number 1

Network like a pro! Reach out to folks in the industry, attend meetups, and connect with people on LinkedIn. You never know who might have the inside scoop on job openings or can put in a good word for you.

✨Tip Number 2

Show off your skills! Create a portfolio or a personal project that highlights your system administration expertise, especially in security. This can really set you apart from other candidates when you're chatting with potential employers.

✨Tip Number 3

Prepare for interviews by brushing up on common questions related to operational technology and security. Practice explaining your experience with Windows, Linux, and SQL databases clearly and confidently.

✨Tip Number 4

Don't forget to apply through our website! We’ve got loads of opportunities that might be perfect for you. Plus, it’s a great way to ensure your application gets seen by the right people.

We think you need these skills to ace OT System Administrator in Cardiff, Wales

System Administration
Windows Server Management
Linux Server Management
Network Security
Infrastructure Security
Patching and Hardening
Active Directory Management
Identity and Access Management
SQL Server Knowledge
ITIL Framework
Problem-Solving Skills
Cyber Security Tooling (EDR, IDS)
Incident Resolution
Service Continuity Management
Operational Technology (OT) Knowledge

Some tips for your application 🫡

Tailor Your CV: Make sure your CV is tailored to the OT System Administrator role. Highlight your experience with Windows, Linux, and network environments, as well as any relevant security practices you've implemented. We want to see how your skills align with what we're looking for!

Showcase Your Problem-Solving Skills: In your application, don’t just list your skills—give us examples of how you've tackled challenges in previous roles. We love a proactive mindset, so share specific instances where you’ve resolved issues or improved processes.

Highlight Relevant Experience: If you have experience in regulated environments or with cyber security tooling, make sure to mention it! This role is all about supporting critical infrastructure, so any related experience will definitely catch our eye.

Apply Through Our Website: We encourage you to apply through our website for a smoother process. It’s the best way for us to keep track of your application and ensure you’re considered for this exciting opportunity. Don’t miss out!

How to prepare for a job interview at Yolk Recruitment Limited

✨Know Your Tech Inside Out

Make sure you brush up on your knowledge of Windows and Linux servers, SQL databases, and Cisco networks. Be ready to discuss your hands-on experience with these technologies, as well as any specific projects you've worked on that relate to operational technology.

✨Showcase Your Security Savvy

Since this role has a strong focus on security, be prepared to talk about your experience with patching, vulnerability management, and system hardening. Highlight any relevant tools you've used, like EDR or intrusion detection systems, and how you've implemented best practices in previous roles.

✨Demonstrate Problem-Solving Skills

Prepare to share examples of how you've tackled complex issues in a structured environment. Think of specific incidents where you resolved problems effectively, especially in regulated settings. This will show your proactive mindset and ability to manage multiple priorities.

✨Understand the Bigger Picture

Familiarise yourself with the organisation's mission and the impact of their work on critical infrastructure. Being able to articulate why you're passionate about contributing to a cyber transformation programme will set you apart and demonstrate your alignment with their values.

OT System Administrator in Cardiff, Wales
Yolk Recruitment Limited
Location: Cardiff

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