{"id":1488319,"url":"https://alion.io/job/mantech-senior-systems-administrator-2","title":"Senior Systems Administrator","company":{"id":179527,"name":"ManTech","domain":"mantech.com","url":"https://alion.io/company/mantech","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Avature","truth_index":{"grade":"A","score":100,"open_postings":95,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":8,"computed_at":"2026-10-13T05:45:00Z"}},"role":"DevOps","role_family":"DevOps","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Chantilly, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":141500,"max":236000,"currency":"USD","period":"year","gross":null,"usd_annual":236000},"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Active Directory","optional":false},{"name":"DHCP","optional":false},{"name":"DNS","optional":false},{"name":"PKI","optional":false},{"name":"VMWare","optional":false},{"name":"Windows","optional":false},{"name":"Windows Server","optional":false},{"name":"Linux","optional":true},{"name":"Microsoft Office","optional":true},{"name":"PowerShell","optional":true}],"status":"live","first_seen_at":"2026-09-29T23:56:17Z","employer_posted_date":"2026-09-29","last_verified_at":"2026-10-13T20:18:19Z","board_verified":true,"closed_at":null,"days_open":14,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":14},"description":"Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we’ve been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now-unleash your potential with MANTECH!\nMANTECH seeks a motivated, mission-oriented Senior Systems Administrator to join our team in Chantilly, VA.\nAs a Systems Administrator, Senior, you will be responsible for providing a full range of Tier 2/3 IT support services and expertise to customer activities, as well as coordinating and/or supervising a team of System Administrators. You will play a key role in the management, optimization, and troubleshooting of our VMware virtualized environment and Active Directory infrastructure, ensuring seamless and reliable operations for the organization. You will demonstrate knowledge and understanding of client and server operations and maintenance with Windows 10 and 11 environments and Windows Server 2016/2019, to include Active Directory, Domain Controllers, DNS, GPO’s, PKI, DHCP, VMware v8, Backup Architectures, Storage Management, and Auditing.\nResponsibilities include, but not limited to:\nDesign, implement, and maintain VMware vSphere environments, including vCenter, ESXi hosts, and virtual machines.\nTroubleshoot and resolve VMware-related issues, including performance bottlenecks, connectivity problems, and resource allocation.\nManage, monitor, and troubleshoot Active Directory (AD) and Group Policy infrastructure. Administer and support user and group management, including security and distribution groups within Active Directory.\nCollaborate with other IT teams to manage system integration, configuration, and upgrades.\nCreate and maintain comprehensive documentation for systems architecture, processes, and configurations\nDomestic Travel up to 25%\nMinimum Qualifications:\nBachelor’s Degree and 8 years’ experience, or high school diploma/GED and 12 years of relevant systems administration experience\nExperience in performing hardware/softwaremaintenance, repairs, upgrades, full life cycle support, and cybersecurity in anEnterprise IT environment\nKnowledge of Windows file and folder permission & inheritance structure\nIntermediate knowledge of networking principles and routing protocols\nAbility to restore user configurations from backups for continuity of operations\nAbility to identify and implement new technologies at scale\nSecurity+ certification (active)\nPreferred Qualifications:\nPrevious NRO and NRO/COMM experience is highly desired\nCOMSEC experience desired\nAbility to use MS Office and PC\nFamiliarity with PowerShell and command line interfaces\nKnowledge of how to detect and correct technical issues impacting system/server performance\nExperience with Microsoft Exchange\nExperience with Linux/RHEL 8\nClearance Requirements:\nMust possess a current / active TS/SCI with Polygraph\nPhysical Requirements:\nMust be able to be in a stationary position more than 50% of the time\nNeeds to occasionally move about inside the office to access file cabinets, office machinery, etc.\nFrequently communicates with co-workers, management, and customers, which may involve delivering presentations\nFrequently moves Audio/Visual or Computer equipment weighing up to 50 pounds across and/or around a business campus or large facility\nThe projected compensation range for this position is $141,500.00-$236,000.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.\nMANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.\nIf you need a reasonable accommodation to apply for a position with MANTECH, please email us at  and provide your name and contact information.","description_format":"text","description_chars":4684,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"high_school","optional":false},"security_clearance":true,"languages":[]},"benefits":["Health insurance","Life insurance","Wellness"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Artificial Intelligence","Cybersecurity","Government"],"lifecycle":[{"event":"open","at":"2026-09-29T23:56:17Z"}],"visa":[],"liveness":{"score":31,"band":"fade","label":"Fading","p_open":1,"p_active":0.698,"p_room":0.45,"age_days":13,"expected_fill_days":8,"reasons":["conf:0","velocity","win:tail","comp:brand"],"computed_at":"2026-10-13T05:45:00Z"},"pay":{"stated_usd_annual":236000,"is_top_pay":true},"html_url":"https://alion.io/job/mantech-senior-systems-administrator-2","json_url":"https://alion.io/job/mantech-senior-systems-administrator-2.json","meta":{"generated_at":"2026-10-14T00:35:19Z","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":826,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-15T00:00:00Z"}},"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":179527},"rest":"https://alion.io/mcp/rest/get_company?id=179527"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fmantech-senior-systems-administrator-2"},{"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%2Fmantech-senior-systems-administrator-2"},{"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%2Fmantech-senior-systems-administrator-2"},{"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/mantech-senior-systems-administrator-2\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fmantech-senior-systems-administrator-2"}]}