{"id":2868631,"url":"https://alion.io/job/quantum-sky-dha-eoss-computer-systems-analyst-windowsrhel-sa-os","title":"DHA -EOSS Computer Systems Analyst (Windows/RHEL SA OS)","company":{"id":3854380,"name":"Quantum Sky","domain":"quantumsky.com","url":"https://alion.io/company/quantum-sky","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"iCIMS","truth_index":null},"role":"Analytics","role_family":"Analytics","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":["Aurora, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":152000,"max":162000,"currency":"USD","period":"year","gross":null,"usd_annual":162000},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Active Directory","optional":false},{"name":"Amazon Aurora","optional":false},{"name":"Amazon ECS","optional":false},{"name":"Apache HTTP Server","optional":false},{"name":"AWS","optional":false},{"name":"Linux","optional":false},{"name":"Oracle","optional":false},{"name":"PKI","optional":false},{"name":"Red Hat","optional":false},{"name":"Windows","optional":false},{"name":"Windows Server","optional":false}],"status":"live","first_seen_at":"2026-10-19T18:41:26Z","employer_posted_date":"2026-10-19","last_verified_at":"2026-10-21T07:14:28Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"Description\nQuantum Sky is searching for an experienced, high-caliber Senior Computer Systems Analyst (Windows/RHEL SA OS) to support the Defense Health Agency (DHA) E-Commerce Operational Systems Support (EOSS) contract in Aurora, Colorado.\nIn this mission-critical role, you will serve as the lead Operating System (OS) and Infrastructure Administrator responsible for the health, availability, performance, and cybersecurity posture of all DHA E-Commerce System (ECS) operating systems. The DHA ECS hosting environment resides in the Medical Community of Interest (MedCOI) AWS GovCloud East and comprises an enterprise dual-OS architecture consisting of Red Hat Enterprise Linux (RHEL 7/8) and Microsoft Windows Server (2016/2019/2022).\nYou will manage and configure operating systems supporting all core DHA ECS applications-including Oracle Federal Financials (OFF R12), the Enterprise Data Warehouse (EDW), PRISM, Management Tracking and Reporting (MTR/PAT), and web/proxy server tiers. You will lead OS upgrades, author custom Amazon Machine Images (AMIs), execute DISA Security Technical Implementation Guides (STIGs), coordinate with DHA Data Center Operations (DCOPS), and administer user and system-level accounts via the Application Virtualization Hosting Environment (AVHE).\nResponsibilities:\n1. Operating System Administration & Maintenance\nServe as the Senior System Administrator maintaining full lifecycle responsibility for all RHEL and Windows Server operating system instances across Development, Test, Quality Assurance (Pre-Prod), and Production environments.\n\nLead the deployment, configuration, and migration of operating systems across major technology baselines (e.g., upgrading Windows Server 2016/2018 to Windows Server 2022, and RHEL 7 to RHEL 8/9) ensuring uninterrupted application performance.\n\nAdminister OS-level executive software, server utilities, server roles and features, Active Directory services, and Group Policy Objects (GPOs) to maintain system consistency and policy enforcement.\n\nMonitor system resource utilization, memory, processor capacity, storage, and I/O performance; conduct sizing and capacity planning in coordination with DHA DCOPS.\n\n2. Cloud Infrastructure & AWS AMI Management\nUtilize the AWS Management Console to manage and monitor virtual server instances within the MedCOI AWS GovCloud East environment.\n\nBuild, maintain, and harden custom DHA ECS Amazon Machine Images (AMIs) and deployment templates for distribution to the DCOPS Onboarding Team for rapid server provisioning .\n\nCoordinate onboarding forms, Change Requests (CRQs), Support Tickets, and Application Service Interruptions (ASIs) through the DHA Global Service Center (GSC) ticketing system for infrastructure modifications.\n\nEnsure strict segregation of environments: ensure developer access is restricted to Development and Test, while maintaining the production-equivalent ATO posture of the QA/Pre-Prod and Production environments.\n\n3. Cybersecurity Hardening, STIG Implementation & Vulnerability Remediation\nApply DISA Security Technical Implementation Guides (STIGs) and maintain STIG checklists across all Windows Server and RHEL operating systems.\n\nContinuously review and remediate vulnerabilities identified by the Assured Compliance Assessment Solution (ACAS) and Host Based Security System (HBSS) / Trellix scans, resolving operating system findings prior to production deployment.\n\nDeploy Information Assurance Vulnerability Alerts (IAVAs), security patches, hotfixes, and vendor service packs within mandated DoD timelines, eliminating the need for unapproved Plans of Action and Milestones (POA&Ms).\n\nSupport the Information System Security Officer (ISSO) and Information System Security Manager (ISSM) in documenting RMF security controls, artifact generation, and annual Authority to Operate (ATO) re-certification activities.\n\n4. Privileged Access Administration & AVHE Virtual Connectivity\nUtilize the DHA DCOPS Application Virtualization Hosting Environment (AVHE) / Virtual Desktop Infrastructure (VDI) as the required secure access path for administrative management of all AWS platforms.\n\nAct as the designated Point of Contact (POC) for managing system administrator (SA) and standard user accounts; process System Authorization Access Request (SAAR / DD Form 2875) packages and coordinate seed accounts with DHA Consolidated SAAR teams.\n\nEnforce DoD Public Key Infrastructure (PKI) / Common Access Card (CAC) authentication, Single Sign-On (SSO), and privileged access management policies.\n\n5. Operational Availability, Outage Resolution & Maintenance Windows\nSupport the DHA ECS Operational Schedule (PWS Table 2), executing planned OS patching, kernel updates, and server maintenance during designated maintenance windows (Monday-Friday 1800-0600 MT; Saturday-Sunday scheduled windows).\n\nRespond to unscheduled service disruptions in strict adherence to contract SLAs:\nMonth-End / Year-End / October Cycle: Restore production service disruptions within a maximum allowable downtime of 4 hours.\n\nStandard Operations: Restore production outages within 8 hours; non-production (Dev/Test/QA) within 24 hours.\n\nOutage Notifications: Notify Government representatives within 30 minutes of a production issue and within 2 hours for lower environments.\n\nSupport biennial CRM System Integration Test (CRMSIT) environment setup, CARS CTDE automation support, IPv6 dual-stack OS configurations, and annual Continuity of Operations (COOP) disaster recovery failover exercises.\n\nQualifications\nRequired:\nCitizenship: Must be a United States Citizen (mandatory requirement for DoD background investigation, NACLC T3 clearance, and DHA network access).\n\n DoD 8140 / 8570 Baseline Certification: Active DoD 8570.01-M / DoD Manual 8140.03 IAT Level II baseline certification (e.g., CompTIA Security+ ce, CCNA-Security, CySA+, GICSP, GSEC, SSCP) or higher.\n Cybersecurity Certification: Must possess or obtain a DoD 8140.03 IAT Level II certification within three (3) months of hire.\nFormal Education: Bachelor’s degree from an accredited institution in Computer Science, Information Systems, Computer Engineering, or a related technical discipline.\nExperience Substitution Rule: Fifteen (15) years of documented operating system administration experience may be substituted in lieu of a bachelor’s degree.\n\nYears of Experience: Minimum of five (5) years of hands-on Operating System administration experience (including installations, configurations, and DISA STIGing) in enterprise cloud or virtual environments comparable in size and complexity to the DHA ECS program.\n\nDesired:\nRed Hat Certified System Administrator (RHCSA) or Microsoft Certified: Windows Server Hybrid Administrator Associate.\n\nOperating Environment (OE) certification in Linux or Windows.\n\nExperience supporting DoD / Military Health System (MHS) systems hosted within MedCOI or DISA DECC data centers.\n\nWorking knowledge of Application Virtualization Hosting Environment (AVHE / Citrix VDI).\n\nFamiliarity with supporting database tiers (Oracle 12c/19c) and application servers (Oracle WebLogic, Apache HTTP, IIS).\n\nClearance:\nMust possess an active or favorably adjudicated Tier 3 (T3) / National Agency Check with Law and Credit (NACLC) background investigation (SF-86) with Secret eligibility, and be eligible for an IT Level II Privileged Access designation prior to contract start.\nLocation:\nAurora, CO\nAbout Quantum Sky\nCompensation:\nCompensation is unique to each candidate and relative to the skills and experience they bring to the position. The salary range for this position is typically between $152,000-$162,000. This does not guarantee a specific salary as compensation is based upon multiple factors such as education, experience, certifications, and other requirements, and may fall outside of the above-stated range.\nBenefits:\nHighlights of our benefits include Health/Dental/Vision, 401(k) match, Paid Time Off, STD/LTD/Life Insurance, Referral Bonuses, professional development reimbursement, and parental leave.\nThe world the mission operates in is going post-quantum, contested, and machine-speed. Quantum Sky engineers the advantage across cyber, networks, software, and quantum because the mission demands dominance, not parity. We don't follow the map. We draw it.\nAt Quantum Sky, we believe that success starts with our people. We foster a collaborative, innovative, and mission-driven environment where every team member plays a critical role in shaping the future of technology. Are you ready to join #TeamQuantumSky?\nQuantum Sky Engineering LLC 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, disability, status as a protected veteran, or any characteristic protected by applicable law.","description_format":"text","description_chars":8882,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":["Life insurance","Parental leave","Professional development"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Information Security","Engineering Services"],"lifecycle":[{"event":"open","at":"2026-10-19T18:41:26Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.901,"p_room":1,"age_days":1,"expected_fill_days":6,"reasons":["conf:2","velocity","win:early"],"computed_at":"2026-10-21T05:46:15Z"},"pay":{"stated_usd_annual":162000,"is_top_pay":true},"html_url":"https://alion.io/job/quantum-sky-dha-eoss-computer-systems-analyst-windowsrhel-sa-os","json_url":"https://alion.io/job/quantum-sky-dha-eoss-computer-systems-analyst-windowsrhel-sa-os.json","meta":{"generated_at":"2026-10-21T11:43:33Z","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":16575,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-22T00:00:00Z"}},"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":3854380},"rest":"https://alion.io/mcp/rest/get_company?id=3854380"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fquantum-sky-dha-eoss-computer-systems-analyst-windowsrhel-sa-os"},{"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%2Fquantum-sky-dha-eoss-computer-systems-analyst-windowsrhel-sa-os"},{"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%2Fquantum-sky-dha-eoss-computer-systems-analyst-windowsrhel-sa-os"},{"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/quantum-sky-dha-eoss-computer-systems-analyst-windowsrhel-sa-os\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fquantum-sky-dha-eoss-computer-systems-analyst-windowsrhel-sa-os"}]}