{"id":2780260,"url":"https://alion.io/job/leidos-software-developer-multiple-levels-tssci-poly-required","title":"Software Developer - Multiple Levels - TS/SCI Poly Required","company":{"id":7791,"name":"Leidos","domain":"leidos.com","url":"https://alion.io/company/leidos","size_band":"5000+","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":78,"open_postings":253,"ghost_share":0.004,"stale_share":0.862,"repost_share":0.008,"time_to_fill_p50_days":27,"computed_at":"2026-10-24T06:02:35Z"}},"role":"Backend","role_family":"Backend","seniority":"staff","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Reston, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":87100,"max":157450,"currency":"USD","period":"year","gross":null,"usd_annual":157450},"salary_estimate":null,"experience_years_min":12,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Angular","optional":false},{"name":"AWS","optional":false},{"name":"Docker","optional":false},{"name":"ETL/ELT","optional":false},{"name":"JavaScript","optional":false},{"name":"LLM","optional":false},{"name":"Python","optional":false},{"name":"React.js","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false},{"name":"Linux","optional":true},{"name":"RAG","optional":true},{"name":"Unix","optional":true}],"status":"live","first_seen_at":"2026-05-06T00:00:00Z","employer_posted_date":"2026-05-06","last_verified_at":"2026-10-22T02:56:46Z","board_verified":false,"closed_at":null,"days_open":171,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":171},"description":"The Analysis Solutions Business Area at Leidos is seeking Software Developers at multiple experience levels to support a government customer in Reston, VA. Candidates will join a fast-paced, mission-focused team of government and contractor personnel developing innovative software and data-driven solutions. Successful candidates will bring strong technical skills, creativity, attention to detail, and the ability to solve complex problems in dynamic environments.\nThis position is onsite in Reston, VA and requires an active TS/SCI with Polygraph for consideration.\nBasic Qualifications by level -\nMid-Level Software Development Engineer\nBachelor’s degree in Computer Science, Information Systems, Systems Engineering, or related field with 4+ years of experience (or Master’s with 2+ years)\n\n2+ years supporting Intelligence Community or DoD environments\n\nExperience with software development using Java, Python, JavaScript, or TypeScript\n\nExperience with full-stack development, including modern front-end frameworks (React/Angular) and backend services/APIs\n\nFamiliarity with SQL/NoSQL databases, ETL pipelines, and Docker/containerized environments\n\nExposure to cloud platforms (AWS preferred) and DevOps practices\n\nExperience integrating AI/ML or LLM-based capabilities is a plus\n\nSenior Software Development Engineer\nBachelor’s degree with 8+ years of experience (or Master’s with 6+ years)\n\n3+ years supporting Intelligence Community or DoD missions\n\nAdvanced experience in software architecture, system design, and scalable application development\n\nStrong background in data pipelines, ETL workflows, APIs, and cloud-native/containerized systems\n\nExperience developing analytic, simulation, or scenario-based applications\n\nExperience integrating AI/ML, LLMs, or RAG-based solutions into production systems\n\nAbility to lead development efforts and mentor junior engineers\n\nPrincipal Software Development Engineer / Technical Lead\nBachelor’s degree with 12+ years of experience (or Master’s with 10+ years)\n\n3+ years supporting Intelligence Community or DoD missions\n\nDeep expertise in full-stack development, system architecture, and cloud-based platforms\n\nExperience designing complex analytic systems, simulation platforms, and large-scale data pipelines\n\nStrong background in AI/ML, LLM integration, and advanced analytics\n\nProven ability to lead technical strategy, prototype innovative solutions, and guide engineering teams\n\nExcellent communication and stakeholder engagement skills\n\nFor All Levels - Key Responsibilities\nDesign, develop, and maintain mission-focused software applications and data platforms\n\nBuild and support ETL pipelines, APIs, and data integration workflows\n\nDevelop web-based tools for analysis, visualization, and decision support\n\nIntegrate AI/ML and advanced analytics capabilities into applications\n\nCollaborate with users and cross-functional teams to deliver scalable solutions\n\nSupport testing, debugging, optimization, and deployment activities\n\nContribute to technical direction, documentation, and engineering best practices\n\nFor All Levels - Preferred Skills\nStrong problem-solving and analytical abilities\n\nExperience working in Linux/Unix and Dockerized environments\n\nFamiliarity with AWS cloud services and DevOps methodologies\n\nAbility to work independently and collaboratively in fast-paced mission environments\n\nStrong written and verbal communication skills\n\nIf you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.\nOriginal Posting:\nMay 6, 2026For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.\nPay Range:\nPay Range $87,100.00 - $157,450.00The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.","description_format":"text","description_chars":4490,"description_truncated":false,"requirements":{"experience_years_min":12,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":["Equity"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["National Security","C4ISR","Defense Manufacturing","Engineering Services"],"lifecycle":[{"event":"open","at":"2026-10-17T12:36:16Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 50 · green card filings: 24","filings_12m":50,"filings_prev_12m":58,"green_card_filings_12m":24,"median_offered_wage_usd":124257,"route":null,"cap_exempt":false,"checked_at":"2026-10-15T11:24:14+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)","US Department of Labor: PERM disclosure data (green cards)"],"filings_for_role_12m":24}],"liveness":{"score":8,"band":"cold","label":"Long shot","p_open":0.9,"p_active":0.317,"p_room":0.28,"age_days":171,"expected_fill_days":27,"reasons":["conf:51","stale_co","velocity","win:tail","crowd:brand"],"computed_at":"2026-10-24T06:02:35Z"},"pay":{"stated_usd_annual":157450,"is_top_pay":false},"html_url":"https://alion.io/job/leidos-software-developer-multiple-levels-tssci-poly-required","json_url":"https://alion.io/job/leidos-software-developer-multiple-levels-tssci-poly-required.json","meta":{"generated_at":"2026-10-24T22:46:23Z","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":33443,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-25T00:00:00Z"}},"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":7791},"rest":"https://alion.io/mcp/rest/get_company?id=7791"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fleidos-software-developer-multiple-levels-tssci-poly-required"},{"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%2Fleidos-software-developer-multiple-levels-tssci-poly-required"},{"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%2Fleidos-software-developer-multiple-levels-tssci-poly-required"},{"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/leidos-software-developer-multiple-levels-tssci-poly-required\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fleidos-software-developer-multiple-levels-tssci-poly-required"}]}