CGI
System Administrator – Linux & Cloud Infrastructure
Get notified of more jobs like this · No spam, ever
How your CV stacks up
Upload your CV to see how well it fits this job role
?%
Position Description
Join CGI as a System Administrator and help keep secure, business-critical cloud infrastructure performing reliably for our clients. Based on site in Reading, you’ll play an important role in monitoring system health, identifying potential issues and providing responsive first-line support within a highly secure environment. You’ll have the autonomy to investigate alerts, use monitoring insights to solve problems and contribute to service improvements, while collaborating with experienced technical teams when more complex challenges arise. It’s an opportunity to build your expertise across Linux and cloud infrastructure, contribute ideas that strengthen service performance, and develop your career within a supportive CGI community where your contribution has a visible impact.
CGI was recognised in the Sunday Times Best Places to Work List 2025 and has been named a UK ‘Best Employer’ by the Financial Times. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you a CGI Partner not just an employee. We are committed to inclusivity, building a genuinely diverse community of tech talent and inspiring everyone to pursue careers in our sector, including our Armed Forces, and are proud to hold a Gold Award in recognition of our support of the Armed Forces Corporate Covenant. Join us and you’ll be part of an open, friendly community of experts. We’ll train and support you in taking your career wherever you want it to go.
Due to the secure nature of the programme, you will need to hold UK Security Clearance or be eligible to go through this clearance. This is an office-based position.
Your future duties and responsibilities
In this role, you will take ownership of the day-to-day monitoring and first-line support of secure cloud infrastructure, helping maintain the availability, performance and reliability of critical systems. You’ll carry out daily health checks, proactively investigate alerts and use tools such as Grafana and Kibana to analyse dashboards, logs and system metrics.
Reasons to use Rodeo
Start with a chat, not a search bar
Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.
It searches the market for you
Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
You’ll apply your problem-solving skills to troubleshoot incidents, resolving issues where possible and gathering the technical information needed for efficient escalation when additional expertise is required. Working alongside CGI colleagues and technical teams, you’ll have opportunities to share ideas, improve ways of working and expand your knowledge. You’ll also participate in a 24x7 on-call rota, responding to critical incidents outside standard working hours when required.
- Monitor & Maintain: Conduct daily system and infrastructure health checks, monitoring availability and performance.
- Investigate & Resolve: Identify alerts and incidents, perform initial troubleshooting and resolve first-line issues.
- Analyse & Improve: Use Grafana, Kibana, dashboards, logs and system metrics to identify potential problems and support continuous improvement.
- Diagnose & Escalate: Gather complete diagnostic information, error details and system context before escalating complex issues to technical teams.
- Support & Collaborate: Deliver responsive customer support while working closely with technical colleagues to restore services efficiently.
- Respond & Protect: Participate in the 24x7 on-call rota and respond to critical incidents when required.
Required Qualifications To Be Successful In This Role
You’ll bring practical systems administration or infrastructure support experience, with a strong grounding in Linux and confidence using monitoring and observability tools. You should be comfortable investigating technical issues methodically, interpreting system information and working collaboratively to deliver a reliable service. You’ll be supported by experienced colleagues while having the scope to take ownership of issues and develop creative solutions.
- Linux: Practical experience administering, supporting or troubleshooting Linux environments.
- Grafana: Experience using Grafana to review or create dashboards and analyse system performance.
- Kibana: Experience using Kibana to investigate logs, alerts and operational issues.
- Monitoring: Ability to interpret system metrics, logs and infrastructure health information.
- Troubleshooting: Proven ability to gather diagnostic information, investigate issues and determine appropriate next steps.
- Customer Support: Strong customer service and communication skills within a technical support environment.
- On-Call Support: Willingness and ability to participate in a 24x7 on-call rota.
- Agile: Experience working within an Agile environment would be advantageous.
Get help with your application
Your very own career expert that helps elevate your application to the next level.
Life at CGI
Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you’ll reach your full potential because…
- You are invited to be an owner from day 1 as we work together to bring our Dream to life. That’s why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company’s strategy and direction.
- Your work creates value. You’ll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise.
- You’ll shape your career by joining a company built to grow and last. You’ll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.
That same commitment to fairness extends to how we use technology. To support our recruitment team, AI tools may be used to help assess applications though they never replace human judgement. All hiring decisions remain entirely in the hands of our recruitment professionals.
Come join our team—one of the largest IT and business consulting services firms in the world.
“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”
Jessica, London
Location