{"id":2007698,"url":"https://alion.io/job/cgi-system-administrator-linux-cloud-infrastructure","title":"System Administrator – Linux & Cloud Infrastructure","company":{"id":1063,"name":"CGI","domain":"cgi.com","url":"https://alion.io/company/cgi","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Welcome to the Jungle","truth_index":null},"role":"DevOps","role_family":"DevOps","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["France"],"countries":["FR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":45000,"max_usd":76000,"period":"year","method":"role_country_seniority_unknown","sample_n":239},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Grafana","optional":false},{"name":"Kibana","optional":false},{"name":"Linux","optional":false}],"status":"live","first_seen_at":"2026-09-30T16:03:41Z","employer_posted_date":null,"last_verified_at":"2026-09-30T16:03:41Z","board_verified":false,"closed_at":null,"days_open":11,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":11},"description":"The Space, Defence and Intelligence business unit in CGI is a true IT Systems Integrator. We work, build, and operate bespoke, technically complex, mission-critical systems which help our clients keep us all safe and secure. We bring innovation to our clients using proven and emerging technologies, agile delivery processes and our deep expertise across the breadth of space, defence, intelligence, aerospace and maritime, all underpinned by our end-to-end cyber capability. We work collaboratively with global technology companies, cutting edge SMEs and academia to deliver the optimal solution for each client.\n\nCGI 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.\n\nCGI are on the lookout for a System Administrator to join our BOREALIS team 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.\n\nDue to the secure nature of the programme, you will need to be a sole UK National and hold UK Security Clearance or be eligible to go through this clearance. This is an office-based position, requiring 5 days per week onsite at our Reading location, and participation in a 24/7 on call rota.Profil recherché\nIn 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.\n\nYou’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.\n\n• Monitor & Maintain: Conduct daily system and infrastructure health checks, monitoring availability and performance.\n\n• Investigate & Resolve: Identify alerts and incidents, perform initial troubleshooting and resolve first-line issues.\n\n• Analyse & Improve: Use Grafana, Kibana, dashboards, logs and system metrics to identify potential problems and support continuous improvement.\n\n• Diagnose & Escalate: Gather complete diagnostic information, error details and system context before escalating complex issues to technical teams.\n\n• Support & Collaborate: Deliver responsive customer support while working closely with technical colleagues to restore services efficiently.\n\n• Respond & Protect: Participate in the 24x7 on-call rota and respond to critical incidents when required.\n\nRequired qualifications to be successful in this role\n\nYou’ll bring practical systems administration or previous cloud infrastructure support experience, with a strong grounding in Linux and confidence using monitoring and observability tools. 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