{"id":113976,"url":"https://alion.io/job/agile-defense-linux-systems-engineer","title":"Senior Linux Systems Engineer","company":{"id":716156,"name":"Agile Defense","domain":"agiledefense.com","url":"https://alion.io/company/agiledefense","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"B","score":84,"open_postings":31,"ghost_share":0,"stale_share":0.645,"repost_share":0,"time_to_fill_p50_days":41,"computed_at":"2026-10-17T05:46:00Z"}},"role":"DevOps","role_family":"DevOps","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":150000,"max":185000,"currency":"USD","period":"year","gross":null,"usd_annual":185000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Ansible","optional":false},{"name":"AWS","optional":false},{"name":"Bash","optional":false},{"name":"Chef","optional":false},{"name":"Configuration Management","optional":false},{"name":"DHCP","optional":false},{"name":"DNS","optional":false},{"name":"Linux","optional":false},{"name":"Nessus","optional":false},{"name":"Puppet","optional":false},{"name":"Python","optional":false},{"name":"Red Hat","optional":false}],"status":"live","first_seen_at":"2026-08-17T19:26:05Z","employer_posted_date":"2026-08-17","last_verified_at":"2026-10-18T05:51:15Z","board_verified":true,"closed_at":null,"days_open":61,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":61},"description":"Requisition #: 1788\nJob Title: Senior Linux Systems Engineer\nLocation: On-Site, Oahu, HI\nClearance Level: Top Secret, SCI, Must Have Clearance to Start\nRequired Certification(s): IAT Level III (CISSP/CASP) + Computing Environment (CE), Red Hat Certified System Administrator (RHCSA), One additional specialized certification cloud technology or relevant to the scope of the PWS.\nIf no (RHCSA) OR IAT Level III to start, then candidate will be required to obtain within 6months of starting the program\nJob Description\nAs part of Agile Defense, the successful candidate will provide Linux engineering, systems administration, and cybersecurity services supporting the sustainment of Red Hat Enterprise Linux (RHEL) environments across Army and Military Intelligence (MI) Domain networks. The position will support both on-premises infrastructure and Army Commercial Cloud Service Provider (AC2SP) environments.\nThe contract services will contribute to the operation, sustainment, cybersecurity, and regulatory compliance of Army JWICS and the MI Domains across the INSCOM G6/GISA global enterprise.\nAgile Defense is seeking a Senior Linux Systems Engineer to support a contract providing RHEL services to INSCOM GISA. The successful candidate will have extensive experience deploying, managing, securing, and troubleshooting enterprise Linux environments across distributed, hybrid-cloud, and global enterprise infrastructure.\nLinux Systems Administration & Engineering\nDeploy, configure, maintain, troubleshoot, and secure Linux-based servers\nDevelop, maintain, and enforce standardized RHEL system baselines in accordance with enterprise security requirements, STIGs, and operational standards\nDeploy and manage RHEL systems throughout their lifecycle, including installation, configuration, upgrades, patching, troubleshooting, and decommissioning.\nManage RHEL software packages and repositories using YUM/DNF.\nConfigure and maintain enterprise Linux services, including DNS, DHCP, NFS, and related infrastructure services.\nManage user accounts, permissions, authentication, and access controls in accordance with established security policies.\nApply and test kernel updates, package upgrades, security patches, and configuration changes in production and development environments.\nMonitor Linux systems for performance, security, availability, and capacity, proactively identifying and resolving issues.\nImplement and maintain system backup and disaster recovery procedures.\nSupport the integration and deployment of Linux systems supporting enterprise applications and infrastructure.\nEnterprise & Hybrid-Cloud Infrastructure\nDeploy and manage Linux infrastructure across distributed hybrid-cloud environments.\nSupport enterprise RHEL environments across AWS, on-premises, and geographically distributed infrastructure.\nDesign and implement reliable, scalable, and secure Linux solutions supporting global enterprise operations.\nIntegrate Linux systems with enterprise networking, security, authentication, monitoring, and application services.\nTroubleshoot complex infrastructure issues spanning Linux, cloud, network, and application environments.\nEvaluate existing infrastructure and recommend improvements to system reliability, scalability, security, and operational efficiency.\nCybersecurity & Vulnerability Management\nPerform continuous monitoring of Linux systems using vulnerability scanning tools such as Tenable Nessus.\nAnalyze weekly and monthly vulnerability scan results and identify security vulnerabilities and compliance deficiencies.\nMitigate vulnerabilities through system reconfiguration, security patches, security updates, and configuration changes.\nHarden Linux systems using Security Technical Implementation Guides (STIGs), security baselines, and approved configurations.\nSupport compliance with Risk Management Framework (RMF) and applicable Intelligence Community security requirements.\nTrack, document, and report vulnerability remediation activities.\nCollaborate with Information Assurance and Cybersecurity teams to ensure Linux systems meet applicable security and compliance requirements.\nSupport security assessments, audits, inspections, and authorization activities.\nAutomation & Process Improvement\nDevelop and maintain Bash, Python, and other automation scripts to streamline Linux administration and cybersecurity activities.\nImplement and manage automated patching, configuration management, and vulnerability remediation.\nUtilize automation and configuration-management technologies such as Ansible, Puppet, and Chef.\nIdentify opportunities to automate repetitive administrative and security tasks.\nDevelop standardized and repeatable processes for Linux deployment, configuration, hardening, patching, and maintenance.\nDocumentation & Auditing\nMaintain accurate technical documentation for Linux systems, configurations, architectures, and operational procedures.\nDocument vulnerability findings, remediation activities, configuration changes, and resolutions.\nSupport security audits and compliance assessments by providing technical information and documentation.\nMaintain documentation necessary to support RMF and Intelligence Community compliance requirements.\nCollaboration\nWork closely with Information Assurance, Cybersecurity, network, and application teams to ensure Linux environments meet operational and security requirements.\nCollaborate with network administrators and application teams to integrate Linux systems into enterprise solutions.\nProvide technical expertise and guidance for complex Linux engineering and infrastructure issues.\nStay current with Linux, cloud, cybersecurity, and automation technologies and recommend improvements to the enterprise environment.\nEducation and Background, Years of Experience, & Required Skills\nBachelor s Degree in a technology-related field or 15 years of related experience. Experienced Red Hat Linux Administrator.\nPreferred Skills\nTeam leadership and technical execution Professional hands-on experience in systems engineering tools.\nWritten and verbal communication skills.\nAbility to think critically and problem-solve.\nAdvanced skillset in time management and task prioritization.\nWorking Conditions\nEnvironmental Conditions\nStandard Office Environment \nStrength Demands\nSedentary - 10 lbs. Maximum lifting, occasional lift/carry of small articles. Some occasional walking or standing may be required. Jobs are sedentary if walking and standing are required only occasionally, and all other sedentary criteria are met. \nPhysical Requirements\nUse Hands / Fingers to Handle or Feel; Visual acuity to perform job-related tasks","description_format":"text","description_chars":6633,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":true,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Digital Government","Information Security","Managed Security","Cloud Consulting & Migration"],"lifecycle":[{"event":"open","at":"2026-08-17T19:26:05Z"}],"visa":[],"liveness":{"score":23,"band":"cold","label":"Long shot","p_open":1,"p_active":0.531,"p_room":0.44,"age_days":60,"expected_fill_days":41,"reasons":["conf:1","stale_co","urgency","velocity","win:tail","crowd:brand"],"computed_at":"2026-10-17T05:46:00Z"},"pay":{"stated_usd_annual":185000,"is_top_pay":true},"html_url":"https://alion.io/job/agile-defense-linux-systems-engineer","json_url":"https://alion.io/job/agile-defense-linux-systems-engineer.json","meta":{"generated_at":"2026-10-18T08:37:16Z","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":12799,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-19T00:00:00Z"}},"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":716156},"rest":"https://alion.io/mcp/rest/get_company?id=716156"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fagile-defense-linux-systems-engineer"},{"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%2Fagile-defense-linux-systems-engineer"},{"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%2Fagile-defense-linux-systems-engineer"},{"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/agile-defense-linux-systems-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fagile-defense-linux-systems-engineer"}]}