{"id":1897358,"url":"https://alion.io/job/shield-ai-senior-systems-administrator-r5064","title":"Senior Systems Administrator (R5064)","company":{"id":50,"name":"Shield AI","domain":"shield.ai","url":"https://alion.io/company/shield-ai","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"B","score":74,"open_postings":91,"ghost_share":0,"stale_share":0.846,"repost_share":0.011,"time_to_fill_p50_days":66,"computed_at":"2026-11-05T05:54:30Z"}},"role":"DevOps","role_family":"DevOps","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":81000,"max_usd":164000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":61},"experience_years_min":4,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Active Directory","optional":false},{"name":"Azure","optional":false},{"name":"DHCP","optional":false},{"name":"DNS","optional":false},{"name":"Linux","optional":false},{"name":"TCP/IP","optional":false},{"name":"Windows","optional":false},{"name":"ITIL","optional":true},{"name":"PowerShell","optional":true}],"status":"closed","first_seen_at":"2026-06-16T01:54:44Z","employer_posted_date":"2026-06-16","last_verified_at":"2026-11-03T21:49:14Z","board_verified":false,"closed_at":"2026-11-03T21:49:14Z","days_open":140,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":140},"description":"Job Description:\nThe Senior Systems Administrator is responsible for supporting, securing, and optimizing enterprise IT operations. This includes end-user system support, infrastructure maintenance, IT asset lifecycle management, and leadership of junior team members. The ideal candidate brings strong technical expertise, organizational discipline, and a collaborative mindset to support a modern, scalable, and secure IT environment.\nWhat you'll do:\nProvide hands-on desktop, server, and systems administration support for Windows and Linux environments.\nInstall, configure, and troubleshoot hardware and software issues across end-user devices and server systems.\nAdminister user accounts, access control, and group policies using Active Directory and Azure AD.\nManage IT assets throughout their lifecycle: procurement, deployment, support, and decommissioning.\nEnsure proper inventory control, software licensing compliance, and asset tracking using IT asset management tools.\nGenerate reports on hardware/software usage, compliance, and asset depreciation for internal and audit needs.\nLead and mentor junior administrators and support staff; contribute to technical documentation and team training.\nParticipate in on-call rotation and perform maintenance activities outside business hours as required.\nCollaborate with infrastructure, network, and security teams to support enterprise IT operations and incident response.\nRequired qualifications:\n4+ years of experience in systems administration or enterprise desktop support roles.\nStrong proficiency in Windows and Linux operating systems.\nExperience with Active Directory, Azure AD, and identity/access management tools.\nKnowledge of networking fundamentals (TCP/IP, DNS, DHCP) and endpoint security practices.\nFamiliarity with IT asset management platforms (e.g., SNIPE, JSM, JIRA).\nAbility to participate in an on-call rotation and off-hours maintenance windows.\nStrong documentation, troubleshooting, and customer service skills.\nExcellent communication and collaboration across technical and non-technical teams.\nPreferred qualifications:\nExperience with Microsoft Endpoint Manager (Intune), JAMF, and scripting in PowerShell.\nWorking knowledge of ITIL practices related to change, incident, and asset management.\nPrevious experience in asset lifecycle planning and procurement strategy.\nExperience supporting remote and hybrid work environments.\nIndustry certifications (e.g., CompTIA, Microsoft, ITIL, Cisco) are a plus.\nWhy join Shield AI:\nHelp build the defining defence technology company of this century. \nWork at the forefront of AI, autonomy, and next-generation defence systems. \nOperate in a highly entrepreneurial and mission-driven environment. \nMake a direct impact on international growth and strategic defence partnerships. \nCollaborate with exceptional teams solving some of the world’s most complex operational challenges.","description_format":"text","description_chars":2903,"description_truncated":false,"requirements":{"experience_years_min":4,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Hybrid work"],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Military Drones","Defense Manufacturing","Defense AI","Drone AI"],"lifecycle":[{"event":"open","at":"2026-10-05T08:58:56Z"},{"event":"close","at":"2026-11-03T21:49:14Z"}],"visa":[{"country":"GB","licensed_sponsor":true,"evidence":"Licensed UK visa sponsor (Senior or Specialist Worker, Skilled Worker)","filings_12m":null,"filings_prev_12m":null,"green_card_filings_12m":null,"median_offered_wage_usd":null,"route":"Global Business Mobility: Senior or Specialist Worker; 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