{"id":3585457,"url":"https://alion.io/job/leidos-system-administrator-13","title":"System Administrator","company":{"id":7791,"name":"Leidos","domain":"leidos.com","url":"https://alion.io/company/leidos","size_band":"5000+","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":77,"open_postings":324,"ghost_share":0.003,"stale_share":0.892,"repost_share":0.009,"time_to_fill_p50_days":28,"computed_at":"2026-11-05T05:54:30Z"}},"role":"DevOps","role_family":"DevOps","seniority":"middle","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["San Diego, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":87100,"max":157450,"currency":"USD","period":"year","gross":null,"usd_annual":157450},"salary_estimate":null,"experience_years_min":4,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Active Directory","optional":false},{"name":"Ansible","optional":false},{"name":"Bash","optional":false},{"name":"Configuration Management","optional":false},{"name":"DNS","optional":false},{"name":"Linux","optional":false},{"name":"Nessus","optional":false},{"name":"PowerShell","optional":false},{"name":"TCP/IP","optional":false},{"name":"Windows","optional":false},{"name":"HPC","optional":true},{"name":"Red Hat","optional":true}],"status":"live","first_seen_at":"2026-10-30T00:00:00Z","employer_posted_date":"2026-10-30","last_verified_at":"2026-11-05T05:19:33Z","board_verified":true,"closed_at":null,"days_open":6,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":6},"description":"Leidos' Corporate Information Security Office, reporting through the Digital sector, is seeking a System Administrator to support various classified environments. The successful candidate will be responsible for maintaining, securing, and supporting a complex classified information system, as well as ensuring compliance with security protocols and regulations.\nLocation: All work will be performed on site in our San Diego, CA office.\nClearance: You must hold a current, active DoD Top Secret Clearance to qualify for consideration.\nPrimary Responsibilities\nThis role includes a combination of duties to protect information, and maintain security controls, for an entire system, site, or program to reduce risk.\nAdminister, maintain, and troubleshoot Windows and Linux-based workstations and servers within a mixed operating system environment.\nManage Active Directory services, including user and computer accounts, Group Policy Objects (GPOs), DNS, and system authentication.\nPerform routine system maintenance, software installations, patching, configuration updates, and hardware troubleshooting to ensure system availability and reliability.\nConfigure and maintain network infrastructure, including switches, VLANs, IP addressing, firewall rules, and network connectivity.\nAdminister enterprise storage and file-sharing services, including SMB, NFS, iSCSI, and applicable file system permissions and access controls.\nImplement and maintain system security configurations in accordance with DISA STIGs, JSIG, RMF, and organizational cybersecurity requirements.\nExecute vulnerability assessments and compliance scans using tools such as DISA SCC, Evaluate-STIG, and Tenable Nessus; remediate identified findings and document corrective actions.\nDevelop and maintain automation scripts using PowerShell, Bash, or Ansible to improve system administration efficiency, configuration consistency, and repeatability.\nMonitor system health, performance, storage utilization, backup operations, and security logs to proactively identify and resolve operational issues.\nSupport system backup, recovery, and data protection activities to ensure operational continuity and data integrity.\nFollow established change management processes, including documenting, coordinating, and implementing approved system modifications.\nDevelop and maintain technical documentation, system configurations, network diagrams, and standard operating procedures (SOPs).\nCollaborate with Information System Security Officers (ISSOs), Information System Security Managers (ISSMs), and engineering personnel to support continuous monitoring, security assessments, and authorization activities.\nProvide technical support to end users, troubleshoot reported issues, and coordinate with program stakeholders to minimize operational disruptions.\nAssist with hardware refreshes, system deployments, technology upgrades, and infrastructure modernization initiatives.\nOther duties as assigned.\nBasic Qualifications\nBachelor’s degree coupled with 4-8 years of experience or equivalent relevant industry-standard experience and certifications may be considered in lieu of a degree.\nMust be a U.S. Citizen.\nMust currently hold an Active Top Secret security clearance to be considered along with sustained ability to be cleared to Special Access Programs (SAP) and ability to obtain a Polygraph.\nMust have a current DoD 8570 IAT level II or higher certification such as CompTIA Security+.\nWindows and Linux Administration: Experience administering, configuring, troubleshooting, and maintaining both Windows and Linux operating systems in an enterprise environment to include workstations, Active Directory, DNS, and Group Policy.\n Classified Systems and Compliance: Experience supporting Special Access Program (SAP) environments, including familiarity with the Joint Special Access Program Implementation Guide, Risk Management Framework (RMF), and system authorization lifecycle requirements.\nNetworking and Security Technologies: Working knowledge of enterprise networking concepts and switching technologies including TCP/IP, VLANs, subnetting, RADIUS, firewall rules, and networking troubleshooting.\nSecurity Compliance and Vulnerability Management: Experience utilizing common compliance tools including DISA SCAP, Evaluate STIG, Tenable Nessus, and Trellix. Ability to interpret scan results, identify security efficiencies, implement corrective actions, and maintain compliance documentation.\nEnterprise Storage and File Services: Experience configuring, managing, and troubleshooting enterprise storage and file-sharing technologies including iSCSI, SMB, and NFS. Understanding of Windows NTFS permissions, Linux file permissions, access control lists, and secure storage provisioning.\nChange and Configuration Management: Knowledge of established change management processes, configuration baselines, documentation standards, and system lifecycle procedures. Ability to plan, document, and execute system changes while minimizing operational impact and maintaining security compliance.\nTechnical Troubleshooting and Operational Support: Strong demonstrated ability to independently diagnose and resolve moderately complex hardware, software, operating system, and network issues. Experience performing software installation, system updates, remote administration, and routing maintenance within controlled environments.\nTechnical Documentation and Collaboration: Ability to develop and maintain technical documentation, standard operating procedures, work instructions, and system configuration records. Experience collaborating with engineering, cybersecurity, and program stakeholders to support operational requirements.\n\nPreferred Qualifications\nRedHat Certified System Administrator (RHCSA) certification.\nAutomation and Scripting: Experience developing, modifying, and executing automation scripts or playbooks using PowerShell, Bash, or Ansible to improve system deployment, configuration management, patching, security, compliance, and operational repeatability.\n Advanced Infrastructure Experience: Experience administering virtualized environments, working with High Performance Computing (HPC), and managing enterprise backup and recovery solutions.\nIf you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.\nOriginal Posting:\nOctober 30, 2026For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.\nPay Range:\nPay Range $87,100.00 - $157,450.00The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.","description_format":"text","description_chars":7312,"description_truncated":false,"requirements":{"experience_years_min":4,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":["Equity"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["National Security","C4ISR","Defense Manufacturing","Engineering Services"],"lifecycle":[{"event":"open","at":"2026-11-01T10:05:24Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 50 · green card filings: 24","filings_12m":50,"filings_prev_12m":58,"green_card_filings_12m":24,"median_offered_wage_usd":124257,"route":null,"cap_exempt":false,"checked_at":"2026-10-29T16:27:21+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)","US Department of Labor: PERM disclosure data (green cards)"],"filings_for_role_12m":24}],"liveness":{"score":70,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.695,"p_room":1,"age_days":6,"expected_fill_days":28,"reasons":["conf:0","stale_co","wave","velocity","win:early","comp:brand"],"computed_at":"2026-11-05T05:54:30Z"},"pay":{"stated_usd_annual":157450,"is_top_pay":true},"html_url":"https://alion.io/job/leidos-system-administrator-13","json_url":"https://alion.io/job/leidos-system-administrator-13.json","meta":{"generated_at":"2026-11-05T13:25:34Z","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":17399,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-06T00:00:00Z"}},"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":7791},"rest":"https://alion.io/mcp/rest/get_company?id=7791"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fleidos-system-administrator-13"},{"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%2Fleidos-system-administrator-13"},{"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%2Fleidos-system-administrator-13"},{"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/leidos-system-administrator-13\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fleidos-system-administrator-13"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3585457}},{"tool":"search_jobs","arguments":{"company":"leidos.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3585457},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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