{"id":730388,"url":"https://alion.io/job/sigmadefense-1520-network-engineer-i-iii","title":"1520 - Network Engineer I - III","company":{"id":685779,"name":"Sigma Defense Systems","domain":"sigmadefense.com","url":"https://alion.io/company/sigmadefense","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"A","score":100,"open_postings":17,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":13,"computed_at":"2026-11-02T06:13:15Z"}},"role":"Networking","role_family":"Networking","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":["San Diego, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":75000,"max":100000,"currency":"USD","period":"year","gross":null,"usd_annual":100000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Ansible","optional":false},{"name":"PowerShell","optional":false},{"name":"Python","optional":false},{"name":"Zero Trust","optional":false},{"name":"Zscaler","optional":false}],"status":"live","first_seen_at":"2026-10-27T15:25:09Z","employer_posted_date":"2026-10-27","last_verified_at":"2026-11-02T06:55:48Z","board_verified":true,"closed_at":null,"days_open":5,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":5},"description":"Sigma Defense is seeking a Network Engineer I-III to support the design, implementation, and sustainment of the Navy’s enterprise networks. The hired candidate will design, configure, secure, automate, and document high-availability networks in both shipboard and lab environments while supporting the full lifecycle from installation through sustainment. This includes working on DoD initiatives such as SD-WAN, IPv6 Migration, Zero Trust Networks and Cross-Domain Network solutions. They will work with SMEs in Cybersecurity, Systems Management, Systems Engineering, and Quality Assurance to learn the needs and goals of the system and shape the requirements of the network.\nEqual Opportunity Employer/Veterans/Disabled: Sigma Defense Systems 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, or protected veteran status and will not be discriminated against on the basis of disability.\nRequirements\nNetwork Engineer I:\n0-2 Years of Experience.\nKnowledge of Network Access Control (Cisco ISE, Aruba ClearPass, FortiNAC, Forescout).\nKnowledge of Next-Gen Firewalls (Cisco Firepower, Palo Alto, Zscaler).\nKnowledge of Network Devices such as Switches, Routers, Wireless Controllers/APs, Proxy Servers, VOIP, and NTP services.\nKnowledge of deployment automation tools (Ansible, Python, PowerShell).\nKnowledge of delivering network artifacts such as IP plans, network templates, cable tables, network diagrams, ports/protocols documentation, and configuration guides.\nSecurity+ or CISSP and at least one industry certification (CCNA/DevNet Associate).\nMust be a U.S. citizen.\nNetwork Engineer II:\n3+ Years of Experience.\nExperience with Network Access Control (Cisco ISE, Aruba ClearPass, FortiNAC, Forescout).\nExperience with Next-Gen Firewalls (Cisco Firepower, Palo Alto, Zscaler).\nExperience with Network Devices such as Switches, Routers, Wireless Controllers/APs, Proxy Servers, VOIP, and NTP services.\nExperience with deployment automation tools (Ansible, Python, PowerShell).\nExperience with delivering network artifacts such as IP plans, network templates, cable tables, network diagrams, ports/protocols documentation, and configuration guides.\nSecurity+ or CISSP and at least one industry certification (CCNA/DevNet Associate).\nMust be a U.S. Citizen.\nNetwork Engineer III:\n7+ Years of Experience.\nExpertise with Network Access Control (Cisco ISE, Aruba ClearPass, FortiNAC, Forescout).\nExpertise with Next-Gen Firewalls (Cisco Firepower, Palo Alto, Zscaler).\nExpertise with Network Devices such as Switches, Routers, Wireless Controllers/APs, Proxy Servers, VOIP, and NTP services.\nExpertise with deployment automation tools (Ansible, Python, PowerShell).\nExpertise with delivering network artifacts such as IP plans, network templates, cable tables, network diagrams, ports/protocols documentation, and configuration guides.\nSecurity+ or CISSP and at least one industry certification (CCNP/DevNet Professional).\nMust be a U.S. Citizen.\nComputer Software/Programs:\nNetwork Access Control\nSwitching/Routing\nFirewall\nDeployment Automation\nPersonnel Clearance Level:\nCandidate must possess or have the ability to obtain an active Secret security clearance or higher.\nClearance may be sponsored for the right candidate.\nEducation Requirements:\nBachelor's or Technical Degree from an accredited college or university in an unspecified field of study.\nEssential Job Duties (not all-inclusive):\nConfigure, install, and maintain network equipment, software and services across Navy Enterprise Network architecture to include switching, routing, firewall, proxy, wireless, call managers, network access control, voice over IP, and network time services.\nDesign, develop, implement, and troubleshoot VLANs, routing protocols, IP addressing plans, and WAN connectivity.\nIntegrate external services including a wide variety of connected systems.\nApply and validate network-related STIGs in coordination with cybersecurity personnel to ensure compliance with DoD security standards.\nCreate, maintain, and update installation documentation, network diagrams, IP schemas, port mappings, and script/configurations for automated installations.\nConduct diagnostics and fault isolation during official and unofficial test events as well as production installations.\nCollaborate with systems, software, and cybersecurity engineers to deliver secure and resilient network operations.\nParticipate in shipboard testing, validation, and documentation. \nSalary Ranges:\n Network Engineer I: $75,000 - $100,000 annually.\n Network Engineer II: $85,000 - $115,000 annually.\n Network Engineer III: $120,000 - $140,000 annually.\nBenefits\n Dental and Vision Insurance\n Medical Insurance to Include HSA, FSA, and DFSA Plans\n Life and AD&D coverage\n Employee Assistance Program (EAP)\n 401(k) Plan with Company Matching Contributions\n 160 Hours of Paid Time Off (PTO) \n 12 (Floating) Holidays\n Educational Assistance\n Highly Competitive Salary","description_format":"text","description_chars":5069,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":["Health insurance","Vision insurance"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Network Security","C4ISR","Military Communication","Electronic Warfare"],"lifecycle":[{"event":"open","at":"2026-09-11T09:41:32Z"}],"visa":[],"liveness":{"score":83,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.88,"p_room":0.945,"age_days":5,"expected_fill_days":13,"reasons":["conf:3","velocity","win:mid"],"computed_at":"2026-11-02T06:13:15Z"},"pay":{"stated_usd_annual":100000,"is_top_pay":false},"html_url":"https://alion.io/job/sigmadefense-1520-network-engineer-i-iii","json_url":"https://alion.io/job/sigmadefense-1520-network-engineer-i-iii.json","meta":{"generated_at":"2026-11-02T07:22:25Z","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":10372,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-03T00:00:00Z"}},"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":685779},"rest":"https://alion.io/mcp/rest/get_company?id=685779"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fsigmadefense-1520-network-engineer-i-iii"},{"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%2Fsigmadefense-1520-network-engineer-i-iii"},{"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%2Fsigmadefense-1520-network-engineer-i-iii"},{"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/sigmadefense-1520-network-engineer-i-iii\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fsigmadefense-1520-network-engineer-i-iii"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":730388}},{"tool":"search_jobs","arguments":{"company":"sigmadefense.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":730388},"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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