{"id":1738608,"url":"https://alion.io/job/sigma-defense-systems-1773-system-administrator","title":"1773 - System Administrator","company":{"id":685779,"name":"Sigma Defense Systems","domain":"sigmadefense.com","url":"https://alion.io/company/sigmadefense","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"A","score":100,"open_postings":17,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":14,"computed_at":"2026-10-20T05:45:00Z"}},"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":["United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":115000,"max":135000,"currency":"USD","period":"year","gross":null,"usd_annual":135000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Ansible","optional":false},{"name":"Bash","optional":false},{"name":"Linux","optional":false},{"name":"PowerShell","optional":false},{"name":"Red Hat","optional":false},{"name":"VMWare","optional":false},{"name":"Windows","optional":false},{"name":"Windows Server","optional":false}],"status":"live","first_seen_at":"2026-10-14T19:47:08Z","employer_posted_date":"2026-10-14","last_verified_at":"2026-10-20T03:52:33Z","board_verified":true,"closed_at":null,"days_open":5,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":5},"description":"Sigma Defense is seeking a System Administrator to join our team at March Air Reserve Base. This position plays a key role in maintaining secure Department of War information systems by administering Windows and Red Hat Enterprise Linux (RHEL) environments, performing routine maintenance and patching, and ensuring reliable system operations. The Systems Administrator works closely with the engineering and cybersecurity teams to maintain secure, stable, and mission-ready infrastructure supporting Department of War operations.\nEqual Opportunity Employer/Veterans/Disabled: Sigma Defense Systems is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.\nRequirements\n3-7 years of relevant experience.\nExperience administering Windows Server and/or RHEL systems.\nExperience installing, configuring, maintaining, and troubleshooting server operating systems.\nExperience with virtualization technologies such as VMware ESXi.\nExperience performing operating system patching, maintenance, and lifecycle support.\nBasic understanding of networking concepts and enterprise infrastructure.\nExperience supporting secure or air-gapped Department of War environments.\nExperience with Cross Domain Solution (CDS) technologies.\nExperience with Full Motion Video (FMV) systems, platforms, or supporting infrastructure.\nExperience implementing or maintaining DISA Security Technical Implementation Guides (STIGs).\nExperience maintaining secure Windows and/or RHEL system baselines.\nExperience administering RHEL in physical or virtualized environments.\nExperience with storage, backup, and disaster recovery solutions.\nMust be a U.S. citizen.\nMandatory Certifications:\nSecurity+ is required.\nRHCSA is preferred.\nNetwork+ is preferred.\nLinux+ is preferred.\nServer+ is preferred.\nComputer Programs/Software:\nExperience with Bash, PowerShell, Ansible, or other scripting and automation tools.\nPersonnel Clearance Level:\nCandidate must possess or have the ability to obtain an active TS/SCI security clearance or higher.\nClearance may be sponsored for the right candidate.\nEducation Requirements:\nBachelor's degree from an accredited college or university in Information Technology or related field of study. \nEssential Job Duties (not all-inclusive):\nInstall, configure, maintain, and troubleshoot Windows and RHEL systems.\nPerform routine operating system patching, software updates, and system maintenance.\nMaintain physical and virtual server infrastructure.\nConfigure and maintain user accounts, storage, system services, and server resources.\nTroubleshoot hardware, operating system, and application issues.\nSupport implementation of DISA STIGs and approved system configuration changes.\nMaintain system documentation, configuration baselines, and standard operating procedures.\nSupport system backups, recovery operations, and disaster recovery activities.\nSupport secure Cross Domain Solution (CDS) operations and associated system administration activities.\nCoordinate with cybersecurity and network engineering personnel to implement approved system changes and maintain secure, reliable system operations.\nSupport testing, integration, and implementation of approved hardware and software changes.\nMonitor system health, investigate operational issues, and resolve problems to maintain system availability and performance.\nSalary Range: $115,000 - $135,000 annually.\nBenefits\n Dental and Vision Insurance\n Medical Insurance to Include HSA, FSA, and DFSA Plans\n Life and AD&D coverage\n Employee Assistance Program (EAP)\n 401(k) Plan with Company Matching Contributions\n 160 Hours of Paid Time Off (PTO) \n 12 (Floating) Holidays\n Educational Assistance\n Highly Competitive Salary","description_format":"text","description_chars":3908,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":["Health insurance","Vision insurance"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["C4ISR","Military Communication","Electronic Warfare"],"lifecycle":[{"event":"open","at":"2026-10-03T01:44:40Z"}],"visa":[],"liveness":{"score":78,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.828,"p_room":0.945,"age_days":5,"expected_fill_days":14,"reasons":["conf:1","velocity","win:mid"],"computed_at":"2026-10-20T05:45:00Z"},"pay":{"stated_usd_annual":135000,"is_top_pay":false},"html_url":"https://alion.io/job/sigma-defense-systems-1773-system-administrator","json_url":"https://alion.io/job/sigma-defense-systems-1773-system-administrator.json","meta":{"generated_at":"2026-10-20T06:44:29Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":7427,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-21T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":685779},"rest":"https://alion.io/mcp/rest/get_company?id=685779"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fsigma-defense-systems-1773-system-administrator"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fsigma-defense-systems-1773-system-administrator"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fsigma-defense-systems-1773-system-administrator"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/sigma-defense-systems-1773-system-administrator\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fsigma-defense-systems-1773-system-administrator"}]}