{"id":1943821,"url":"https://alion.io/job/castellum-system-administrator","title":"System Administrator","company":{"id":3903453,"name":"Castellum","domain":"castellum.com","url":"https://alion.io/company/castellum-3","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"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":["Lakehurst, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":85000,"max":105000,"currency":"USD","period":"year","gross":null,"usd_annual":105000},"salary_estimate":null,"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"CentOS Stream","optional":false},{"name":"DHCP","optional":false},{"name":"DNS","optional":false},{"name":"Hyper-V","optional":false},{"name":"Linux","optional":false},{"name":"TCP/IP","optional":false},{"name":"Ubuntu","optional":false},{"name":"VLAN","optional":false},{"name":"VMWare","optional":false},{"name":"Windows","optional":false},{"name":"Windows Server","optional":false},{"name":"Ansible","optional":true},{"name":"CI/CD","optional":true},{"name":"Docker","optional":true},{"name":"Podman","optional":true},{"name":"Terraform","optional":true}],"status":"live","first_seen_at":"2026-09-23T12:36:50Z","employer_posted_date":null,"last_verified_at":"2026-09-23T12:36:50Z","board_verified":false,"closed_at":null,"days_open":33,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":33},"description":"JOB SUMMARY\n\nSpecialty Systems, Inc. has an opening for a Systems and Network Administrator with the skills and experience described below to join our team of technical professionals supporting our Department of Defense customer at Joint Base MDL. In this position, you will have a high-profile role in the development and qualification of systems used to support unique Department of Defense missions. Ideal candidates will have a broad set of technical skills and must be able to work both independently and within a team environment. As a member of our team, you will play a key role in ensuring that systems with a direct impact on our country's warfighting and peacekeeping capabilities perform at optimal levels.\n\nThe Systems and Network Administrator provides support to U.S. Navy programs by administering and maintaining mixed Windows and Linux server environments and the supporting local network infrastructure used by mission-critical development, test, and operational systems. This is a hands-on infrastructure role in a laboratory environment rather than a full-scale Network Operations Center. The position is responsible for server and virtualization administration, basic managed-switch and endpoint configuration, network documentation, connectivity troubleshooting, and system security in compliance with DoD cybersecurity policies and Navy operational requirements.\n\nThis position is located at our customer site at Joint Base MDL. You will work our customer's Compressed Work Schedule, which consists of four 9-hour days (Monday-Thursday) and one 8-hour day (Friday) during the first week of the cycle, followed by four 9-hour days (Monday-Thursday) and Friday off during the second week. This results in a three-day weekend every other week!\n\nRESPONSIBILITIES\n\nInstall, configure, secure, and maintain Windows Server and Linux operating systems in development, integration, test, and production environments.\n\nAdminister user accounts, permissions, directory services, and Group Policy in accordance with approved access-control and cybersecurity requirements.\n\nMonitor system health and resource utilization; perform performance tuning and troubleshoot hardware, operating system, application-hosting, and availability issues.\n\nManage server and network-device patching, updates, vulnerability remediation, configuration backups, and lifecycle maintenance.\n\nAdminister and support virtualized environments such as VMware, Hyper-V, or comparable platforms.\n\nInstall and configure managed network switches, including access ports, VLAN assignments, port security, firmware, and saved configurations, within approved network designs.\n\nConfigure servers, workstations, test equipment, and other endpoints for network connectivity, including network interfaces, IP addressing, DNS, DHCP, and approved security settings.\n\nTroubleshoot physical and logical connectivity issues involving cabling, switch ports, VLANs, addressing, name resolution, and routing; document findings and coordinate escalation when required.\n\nSupport physical network infrastructure, including racks, cabling, labeling, and connection management for laboratory and test environments.\n\nMaintain system and network documentation, architecture diagrams, IP address plans, port maps, asset records, and configuration baselines.\n\nSupport the integration of systems and endpoints into secure Navy networks and enclaves in coordination with network, cybersecurity, and infrastructure stakeholders.\n\nCollaborate with developers, cybersecurity personnel, system administrators, and engineers to support application hosting, laboratory operations, accreditation activities, and incident resolution.\n\nAssist with infrastructure support for DevSecOps pipelines and containerized environments, and provide technical recommendations for reliability, security, modernization, and performance improvements.\n\nQUALIFICATIONS:\n\nA BS/BA degree in Computer Science, Software Engineering, Electrical Engineering, or a related STEM field is preferred. Equivalent work experience is acceptable in lieu of a degree.\n\nMust have a Secret level or higher clearance or be able to obtain a Secret Clearance.\n\nMust have at least 3 years of systems administration or combined systems and network administration experience.\n\nCompTIA Security+ CE certification or the ability to obtain it within 3-6 months of hire, and the ability to satisfy applicable DoD Cyber Workforce requirements for assigned administrative duties.\n\nTechnical Requirements:\n\nExperience administering Windows Server and Linux systems (RHEL, CentOS, Ubuntu, or comparable distributions).\n\nHands-on experience configuring managed Ethernet switches and connecting servers, workstations, test equipment, and other endpoints.\n\nWorking knowledge of TCP/IP, IPv4 addressing and subnetting, VLANs, switching, DNS, DHCP, and basic routing.\n\nAbility to isolate and troubleshoot network issues using common diagnostic tools and device logs, and to distinguish endpoint, server, switch, cabling, and network problems.\n\nExperience with virtualization platforms such as VMware, Hyper-V, or comparable technologies.\n\nAbility to work independently with limited supervision while collaborating effectively with a multidisciplinary team and supporting cybersecurity compliance requirements.\n\nPreferred Qualifications:\n\nExperience with Infrastructure-as-Code or configuration automation tools (Ansible, Terraform, or similar tools).\n\nFamiliarity with containerization technologies and DevSecOps or CI/CD environments (Docker, Podman, or similar technologies).\n\nExperience supporting Navy or DoD programs, secure laboratory environments, or classified networks.\n\nExperience with Cisco, Aruba, Juniper, or comparable managed network switches.\n\nCompTIA Network+, Cisco CCNA, or another relevant networking certification.\n\nSecurity Clearance Notice:\n\nApplicants selected must have a U.S. Government security clearance of secret level or higher and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required.\n\nSpecialty Systems, Inc. provides equal employment opportunity (EEO) to all employees and applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability status, genetic information, marital status, ancestry, protected veteran status, or any other characteristic protected by applicable federal, state, and local laws and offers equal opportunity for VEVRAA Protected Veterans. Specialty Systems, Inc. will not discriminate against employees and job applicants who inquire about, discuss, or disclose compensation information.\n\nReasonable accommodation that do not cause an undue hardship on the company may be made to enable individuals with disabilities to perform essential functions, as long as that would not hinder or prevent performance of duties or be of a safety concern.\n\nPHYSICAL DEMANDS:\n\nThe physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of the job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.\n\nWhile performing the duties of this job, the employee is required to reach with hands and arms. The employee is frequently required to sit, stand and walk. The employee may be required to move ten pounds and could occasionally lift or move up to twenty-five pounds.\n\nDisclaimer: The listed duties are not intended to serve as a comprehensive list of all duties performed by all employees in this classification, only a representative summary of primary duties and responsibilities.","description_format":"text","description_chars":7735,"description_truncated":false,"requirements":{"experience_years_min":3,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":true,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Information Security"],"lifecycle":[{"event":"open","at":"2026-10-06T04:55:30Z"},{"event":"close","at":"2026-10-13T22:55:30Z"},{"event":"reopen","at":"2026-10-20T07:43:21Z"}],"visa":[],"liveness":{"score":21,"band":"cold","label":"Long shot","p_open":0.6,"p_active":0.648,"p_room":0.55,"age_days":33,"expected_fill_days":30,"reasons":["seen:33","win:tail"],"computed_at":"2026-10-27T05:46:45Z"},"pay":{"stated_usd_annual":105000,"is_top_pay":false},"html_url":"https://alion.io/job/castellum-system-administrator","json_url":"https://alion.io/job/castellum-system-administrator.json","meta":{"generated_at":"2026-10-27T08:57:36Z","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":9823,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-28T00:00:00Z"}},"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":3903453},"rest":"https://alion.io/mcp/rest/get_company?id=3903453"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcastellum-system-administrator"},{"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%2Fcastellum-system-administrator"},{"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%2Fcastellum-system-administrator"},{"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/castellum-system-administrator\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcastellum-system-administrator"}]}