{"id":3840768,"url":"https://alion.io/job/systems-and-technology-research-senior-cyber-software-engineer","title":"Senior Cyber Software Engineer","company":{"id":5401,"name":"Systems and Technology Research","domain":"str.us","url":"https://alion.io/company/str","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"A","score":86,"open_postings":39,"ghost_share":0,"stale_share":0.564,"repost_share":0,"time_to_fill_p50_days":49,"computed_at":"2026-11-09T06:03:00Z"}},"role":"Security","role_family":"Security","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Woburn, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":138000,"max":190000,"currency":"USD","period":"year","gross":null,"usd_annual":190000},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"CMake","optional":false},{"name":"LLVM","optional":false},{"name":"Assembly","optional":true},{"name":"Binary Ninja","optional":true},{"name":"Docker","optional":true},{"name":"Ghidra","optional":true},{"name":"IDA Pro","optional":true},{"name":"QEMU","optional":true},{"name":"Rust","optional":true}],"status":"live","first_seen_at":"2026-11-05T19:34:19Z","employer_posted_date":"2026-11-05","last_verified_at":"2026-11-09T16:48:17Z","board_verified":true,"closed_at":null,"days_open":4,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":4},"description":"The Defensive Cyber Technologies (DCT) group at STR is seeking a Senior Cyber Software Engineer to develop software and technical capabilities that improve the security and resiliency of critical national defense systems. Our team hardens customer codebases, conducts cybersecurity assessments of operational software, and develops and applies first-of-its-kind cybersecurity tools to identify and remediate vulnerabilities before they affect mission-critical systems.\nWhat you'll do: \nWork as part of a high-functioning team to apply advanced software engineering principles to develop robust, resilient software solutions for national security missions \nPerform comprehensive security assessments on operational software and mission-critical systems\nIdentify, validate, and remediate vulnerabilities\nDesign, build, and execute novel fuzzing campaigns to uncover security weaknesses\nDevelop static and dynamic analysis tools to detect, report, and remediate vulnerabilities in software systems\nCommunicate technical findings, risk, and remediation recommendations to engineering and customer stakeholders\nWho you are: \nThis position requires an Active Secret or Top Secret security clearance, for which US citizenship is needed by the US Government.\nBachelors degree in Computer Science, or related field with a minimum 5 years of relevant professional experience (MS plus 3 years experience or PhD may be considered)\nStrong proficiency in C or C++ and the ability to learn and work effectively in additional languages as needed\nStrong systems programming foundation, including familiarity with OS internals, ABI/calling conventions, memory and process management, and assembly-level debugging\nExperience working with compiler and build toolchains such as LLVM/Clang, GCC, and CMake.\nNice to have:\nExperience with dynamic analysis and fuzzing tools, such as PIN, DynamoRio, and AFL++\nProficiency in Rust\nExperience with container and virtualization technologies, such as Docker and QEMU\nFamiliarity with reverse engineering and binary analysis using tools such as Ghidra, IDA Pro, Binary Ninja, or objdump\nPay Information\nFull-Time Salary Range: $138,000 - $190,000\nThe salary range listed is based on external market data. Offers are based on factors, such as but not limited to, the candidate’s experience, education, training, key skills/critical skills, security clearances, and prevailing market and business conditions.\nSTR is a growing technology company with locations near Boston, MA, Arlington, VA, near Dayton, OH, Melbourne, FL, Carlsbad, CA, Atlanta, GA, and Denver, CO. We specialize in advanced research and development for defense, intelligence, and national security in: cyber; next generation sensors, radar, sonar, communications, and electronic warfare; and artificial intelligence algorithms and analytics to make sense of the complexity that is exploding around us.\nSTR is committed to creating a collaborative learning environment that supports deep technical understanding and recognizes the contributions and achievements of all team members. Our work is challenging, and we go home at night knowing that we pushed the envelope of technology and made the world safer.\nSTR is not just any company. Our people, culture, and attitude along with their unique set of skills, experiences, and perspectives put us on a trajectory to change the world. We can't do it alone, though - we need fellow trailblazers. If you are one, join our team and help to keep our society safe! Visit us at www.str.us for more info.\n\nSTR is an equal opportunity employer. We are fully dedicated to hiring the most qualified candidate regardless of race, color, religion, sex (including gender identity, sexual orientation and pregnancy), marital status, national origin, age, veteran status, disability, genetic information or any other characteristic protected by federal, state or local laws.\nIf you need a reasonable accommodation for any portion of the employment process, email us at  and provide your contact info.\nPursuant to applicable federal law and regulations, positions at STR require employees to obtain national security clearances and satisfy the requirements for compliance with export control and other applicable laws.","description_format":"text","description_chars":4253,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["C4ISR","Cyber Warfare","Defense AI"],"lifecycle":[{"event":"open","at":"2026-11-05T22:36:38Z"}],"visa":[{"country":"US","licensed_sponsor":true,"adverts_offering_sponsorship_24m":0,"sanctioned_now":false,"evidence":"H-1B filings in 12 months: 4","filings_12m":4,"filings_prev_12m":0,"green_card_filings_12m":0,"median_offered_wage_usd":132500,"route":null,"cap_exempt":false,"checked_at":"2026-11-09T07:32:21+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)"],"filings_for_role_12m":0}],"liveness":{"score":63,"band":"ok","label":"Likely open","p_open":1,"p_active":0.632,"p_room":1,"age_days":3,"expected_fill_days":49,"reasons":["conf:3","stale_co","velocity","win:early","comp:brand"],"computed_at":"2026-11-09T06:03:00Z"},"pay":{"stated_usd_annual":190000,"is_top_pay":true},"html_url":"https://alion.io/job/systems-and-technology-research-senior-cyber-software-engineer","json_url":"https://alion.io/job/systems-and-technology-research-senior-cyber-software-engineer.json","meta":{"generated_at":"2026-11-09T21:10:22Z","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":9304,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-10T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.1,"usd":0.01,"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":5401},"rest":"https://alion.io/mcp/rest/get_company?id=5401"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fsystems-and-technology-research-senior-cyber-software-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":2,"usd":0.2},"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%2Fsystems-and-technology-research-senior-cyber-software-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"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%2Fsystems-and-technology-research-senior-cyber-software-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/systems-and-technology-research-senior-cyber-software-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fsystems-and-technology-research-senior-cyber-software-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3840768}},{"tool":"search_jobs","arguments":{"company":"str.us","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3840768},"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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