{"question":"Vantor backend engineering jobs","answer":"Vantor has 29 open backend engineering roles: 13 in Westminster, 6 in Herndon and 4 in Arlington. 28 of them state the pay; the middle half sits between $123k and $164k a year. One was posted in the last 7 days. Roles at Vantor take 37 days to fill at the median.","company":"Vantor","company_url":"https://alion.io/company/vantor","team":"Backend engineering","open_roles":29,"new_7_days":1,"fully_remote":3,"median_days_to_fill":37,"stated_pay_usd":{"p25":122500,"median":148500,"p75":163500,"postings":28},"cities":{"Westminster":13,"Herndon":6,"Arlington":4,"Washington":2,"Melbourne":2,"Longmont":1,"Reston":1,"Colorado Springs":1,"McLean":1,"Springfield":1},"roles":[{"title":"Principal Full Stack Software Engineer (TS/SCI with CI poly)","url":"https://alion.io/job/vantor-principal-full-stack-software-engineer-tssci-with-ci-poly","cities":["Herndon"],"work_mode":"On-site","pay_usd":[200000,270000],"posted":"2026-10-21"},{"title":"Senior Software Engineer (TS/SCI)","url":"https://alion.io/job/vantor-senior-software-engineer-tssci","cities":["Herndon"],"work_mode":"On-site","pay_usd":[185000,220000],"posted":"2026-10-16"},{"title":"Software Integration Engineer","url":"https://alion.io/job/vantor-software-integration-engineer","cities":[],"work_mode":"Remote","pay_usd":null,"posted":"2026-10-15"},{"title":"Full Stack Geospatial Developer","url":"https://alion.io/job/vantor-full-stack-geospatial-developer","cities":["McLean"],"work_mode":"On-site","pay_usd":[200000,250000],"posted":"2026-10-14"},{"title":"Full Stack Software Engineer (TS/SCI)","url":"https://alion.io/job/vantor-full-stack-software-engineer-tssci-4","cities":["Springfield"],"work_mode":"On-site","pay_usd":[140000,187000],"posted":"2026-10-14"},{"title":"Full Stack Software Engineer","url":"https://alion.io/job/vantor-full-stack-software-engineer-2","cities":["Herndon"],"work_mode":"On-site","pay_usd":[116000,154000],"posted":"2026-10-05"},{"title":"DevSecOps / Software Development Engineer (TS/SCI)","url":"https://alion.io/job/vantor-devsecops-engineer-tssci-8","cities":["Herndon"],"work_mode":"On-site","pay_usd":[116000,154000],"posted":"2026-09-30"},{"title":"Backend Developer (Hybrid)","url":"https://alion.io/job/vantor-backend-developer-hybrid","cities":["Arlington"],"work_mode":"Hybrid","pay_usd":[170000,210000],"posted":"2026-09-29"},{"title":"Sr Backend Engineer, Discovery API","url":"https://alion.io/job/vantor-sr-backend-engineer-discovery-api","cities":["Westminster"],"work_mode":"On-site","pay_usd":[128000,170000],"posted":"2026-09-28"},{"title":"Senior API/Java/Python Developer","url":"https://alion.io/job/vantor-senior-apijavapython-developer-2","cities":["Arlington"],"work_mode":"On-site","pay_usd":[116000,154000],"posted":"2026-09-25"},{"title":"Lead Software Integration Engineer (TS/SCI)","url":"https://alion.io/job/vantor-software-engineering-manager-tssci-2","cities":["Colorado Springs"],"work_mode":"Hybrid","pay_usd":[128000,170000],"posted":"2026-09-17"},{"title":"Scientific Software Engineer","url":"https://alion.io/job/vantor-scientific-software-engineer","cities":["Longmont"],"work_mode":"On-site","pay_usd":[105000,140000],"posted":"2026-09-16"},{"title":"Full Stack Developer (TS/SCI)","url":"https://alion.io/job/vantor-full-stack-developer-tssci-2","cities":["Reston"],"work_mode":"On-site","pay_usd":[116000,154000],"posted":"2026-09-16"},{"title":"Software Development Engineer - Full Stack","url":"https://alion.io/job/vantor-software-development-engineer-full-stack","cities":["Westminster"],"work_mode":"On-site","pay_usd":[86000,115000],"posted":"2026-09-01"},{"title":"Software Development Engineer - Full Stack","url":"https://alion.io/job/vuejobs-software-development-engineer-full-stack","cities":["Westminster"],"work_mode":"On-site","pay_usd":[86000,126500],"posted":"2026-09-01"},{"title":"Principal Engineer - Software Systems","url":"https://alion.io/job/vantor-principal-engineer-software-systems-2","cities":["Westminster"],"work_mode":"On-site","pay_usd":[150000,200000],"posted":"2026-08-24"},{"title":"Senior Staff Software Systems Engineer","url":"https://alion.io/job/vantor-senior-staff-software-systems-engineer","cities":["Westminster"],"work_mode":"On-site","pay_usd":[128000,170000],"posted":"2026-08-24"},{"title":"Staff Software Development Engineer - Full Stack","url":"https://alion.io/job/vantor-staff-software-development-engineer-full-stack","cities":["Westminster"],"work_mode":"On-site","pay_usd":[105000,140000],"posted":"2026-08-14"},{"title":"Staff Software Development Engineer - Full Stack","url":"https://alion.io/job/vantor-staff-software-development-engineer-full-stack-2","cities":["Westminster"],"work_mode":"On-site","pay_usd":[105000,140000],"posted":"2026-08-14"},{"title":"Senior Software Engineer","url":"https://alion.io/job/vantor-senior-software-engineer-2","cities":["Washington","Arlington"],"work_mode":"On-site","pay_usd":[140000,187000],"posted":"2026-08-14"},{"title":"Software Development Eng - Full Stack","url":"https://alion.io/job/vantor-software-development-eng-full-stack","cities":["Westminster"],"work_mode":"On-site","pay_usd":[86000,115000],"posted":"2026-08-14"},{"title":"Software Development Eng - Full Stack","url":"https://alion.io/job/vuejobs-software-development-eng-full-stack","cities":["Westminster"],"work_mode":"On-site","pay_usd":[86000,126500],"posted":"2026-08-14"},{"title":"Staff Software Development Engineer - Full Stack","url":"https://alion.io/job/vuejobs-staff-software-development-engineer-full-stack","cities":["Westminster"],"work_mode":"On-site","pay_usd":[105000,154000],"posted":"2026-08-14"},{"title":"Software Engineer (TS/SCI)","url":"https://alion.io/job/vantor-software-engineer-tssci","cities":["Melbourne"],"work_mode":"On-site","pay_usd":[115000,245000],"posted":"2026-08-14"},{"title":"Sr Staff Software Systems Engineer - Core Mission Systems","url":"https://alion.io/job/vantor-sr-staff-software-systems-engineer-core-mission-systems","cities":["Westminster"],"work_mode":"On-site","pay_usd":[128000,170000],"posted":"2026-08-12"},{"title":"Senior Software Engineer","url":"https://alion.io/job/vantor-senior-software-engineer","cities":["Westminster","Herndon"],"work_mode":"Remote","pay_usd":[128000,170000],"posted":"2026-08-03"},{"title":"Mid-Level Software Engineer","url":"https://alion.io/job/vantor-mid-level-software-engineer","cities":["Westminster","Herndon"],"work_mode":"Remote","pay_usd":[105000,140000],"posted":"2026-08-03"},{"title":"Software Engineer (TS/SCI)","url":"https://alion.io/job/vantor-software-engineer-tssci-3","cities":["Melbourne"],"work_mode":"On-site","pay_usd":[95000,201000],"posted":"2026-07-28"},{"title":"Senior Software Engineer","url":"https://alion.io/job/vantor-senior-software-engineer-3","cities":["Washington","Arlington"],"work_mode":"On-site","pay_usd":[137000,182000],"posted":"2026-06-24"}],"html_url":"https://alion.io/company/vantor/jobs/backend","json_url":"https://alion.io/company/vantor/jobs/backend.json","offers":[{"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":"the whole selection, past the first page","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=company%2Fvantor%2Fjobs%2Fbackend"}],"meta":{"source":"Alion (alion.io), CC BY-SA 4.0","updated_at":"2026-10-25T04:20:30+00:00","built_at":"2026-10-25T04:20:30+00:00","indexable":false,"generated_at":"2026-10-27T14:45:05+00:00","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"}}