{"id":4199326,"url":"https://alion.io/job/sentinel-technologies-systems-administrator-senior","title":"Systems Administrator, Senior","company":{"id":4436595,"name":"Sentinel Technologies","domain":"sentineltechno.com","url":"https://alion.io/company/sentinel-technologies","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"iCIMS","truth_index":null},"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":"explicit","locations":["Green Bay, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":7,"visa_sponsorship":true,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Active Directory","optional":false},{"name":"DHCP","optional":false},{"name":"DNS","optional":false},{"name":"Hyper-V","optional":false},{"name":"SharePoint","optional":false},{"name":"TCP/IP","optional":false},{"name":"VPN","optional":false},{"name":"Windows Server","optional":false},{"name":"VMWare","optional":true}],"status":"live","first_seen_at":"2026-11-12T21:39:54Z","employer_posted_date":"2026-11-12","last_verified_at":"2026-11-13T17:15:23Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Responsibilities\nWe are seeking a reliable and detail-oriented System Administrator to maintain, upgrade, and manage our software, hardware, and network infrastructure for our client. In this role, you will ensure high availability and security across all business systems while providing escalated technical support to end-users. The ideal candidate is a proactive problem-solver with strong organizational skills and a solid foundation in IT operations. This is a 3-5 month contract position reporting onsite at our client location in Green Bay, WI.\nQualifications\nMinimum of 7 years of experience in a network, systems administration, or infrastructure support role. \nAdvanced experience designing, implementing, and troubleshooting Microsoft 365 environments. \nStrong expertise in Active Directory, Group Policy, Exchange, SharePoint, Hyper-V, and Microsoft Configuration Manager (SCCM/MECM). \nHands-on experience with Windows Server administration, patch management, and system migrations. \nExperience with enterprise firewall administration, certificate management, and vulnerability remediation. \nStrong understanding of networking concepts, including routing, switching, TCP/IP, DNS, DHCP, and VPN technologies. \nExperience performing Cisco IOS XE upgrades and network device maintenance. \nKnowledge of cybersecurity best practices, security monitoring, and incident response procedures. \nExcellent troubleshooting, communication, and customer service skills.\nLegally authorized to work in the US without sponsorship\nMust demonstrate a “can-do” attitude\nWe focus on candidates that display our “ACE” factor - Attitude, Compassion, and Enthusiasm to deliver quality solutions with exceptional customer service.\nWe focus on candidates that display our “ACE” factor - Attitude, Compassion, and Enthusiasm to deliver quality solutions with exceptional customer service.\nWhat you get:\nWe offer weekly competitive pay, medical, dental, vision, 401K and more.\nOverview\nMOTIVATED…..make IT happen!\nSentinel Technologies, Inc. has been rated a top workplace every year since 2012!\nAbout Us:\nSentinel delivers solutions that can efficiently address a range of IT needs - from security, to communications, to systems & networks, to software applications, to cloud and managed services; all of which include our staffing solutions for our clients. Since 1982, Sentinel has grown from providing technology maintenance services to our current standing as one of the leading IT services and solutions provider in the US. We have aligned with many of today’s global technology leaders including Cisco, Dell, VMware and Microsoft. Sentinel services customers both nationally and internationally with primary support operating centers in Downers Grove (HQ), Chicago, and Springfield, IL; Phoenix, AZ.; Lansing, and Grand Rapids, MI; Milwaukee, WI; and Denver, CO.\nIf you are MOTIVATED… you can make IT happen at Sentinel. Our commitment to our employees is to create a work environment that encourages creativity, an entrepreneurial spirit, fosters growth through certification and hands-on training, and values a team-oriented culture with rewards based on impact!\nIf you share our passion about what technology can do and want to be part of a top workplace environment - we’d like to have you join our team. Learn more at www.sentinel.com/careers.\nAs part of Sentinel's employment process, candidates will be required to complete a background check. Only those who meet the minimum requirements will be contacted. No phone calls please.\nSentinel is proud to be an equal opportunity employer including disability and veterans. In accordance with Title VII and state regulations, all qualified applicants will receive consideration for employment without regard to race, color, religion, age, sex, sexual orientation, gender identity, national origin, marital status, pregnancy, genetics, disability, military, veteran status or any other basis protected by law.\nIf you are an individual with a disability and need assistance in applying for a position, please contact .\nThe “Know Your Rights” Poster is available here\nhttps://www.eeoc.gov/sites/default/files/2023-06/22-088_EEOC_KnowYourRights6.12ScreenRdr.pdf\nSentinel EEO Policy Statement is available here.\nhttps://www.sentinel.com/about/diversity\nJFNDNP","description_format":"text","description_chars":4322,"description_truncated":false,"requirements":{"experience_years_min":7,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["401k plan"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Artificial Intelligence"],"lifecycle":[{"event":"open","at":"2026-11-12T21:39:54Z"}],"visa":[{"country":"US","licensed_sponsor":true,"adverts_offering_sponsorship_24m":0,"sanctioned_now":false,"evidence":"H-1B filings in 12 months: 3 · green card filings: 2","filings_12m":3,"filings_prev_12m":3,"green_card_filings_12m":2,"median_offered_wage_usd":135500,"route":null,"cap_exempt":false,"checked_at":"2026-11-12T07:36:15+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":3}],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":9,"reasons":["conf:0","win:early"],"computed_at":"2026-11-13T17:36:23Z"},"pay":null,"html_url":"https://alion.io/job/sentinel-technologies-systems-administrator-senior","json_url":"https://alion.io/job/sentinel-technologies-systems-administrator-senior.json","meta":{"generated_at":"2026-11-13T17:36:23Z","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":35232,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-14T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.1,"usd":0.01,"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":4436595},"rest":"https://alion.io/mcp/rest/get_company?id=4436595"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fsentinel-technologies-systems-administrator-senior"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"free","price":{"credits":0,"usd":0},"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%2Fsentinel-technologies-systems-administrator-senior"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"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%2Fsentinel-technologies-systems-administrator-senior"},{"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/sentinel-technologies-systems-administrator-senior\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fsentinel-technologies-systems-administrator-senior"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":4199326}},{"tool":"search_jobs","arguments":{"company":"sentineltechno.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":4199326},"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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