{"id":1030315,"url":"https://alion.io/job/percival-cyber-cno-software-developer","title":"Cyber (CNO) Software Developer","company":{"id":695844,"name":"Percival","domain":"percivaleng.com","url":"https://alion.io/company/percivaleng","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Breezy","truth_index":{"grade":"B","score":75,"open_postings":3,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-23T05:54:15Z"}},"role":"Backend","role_family":"Backend","seniority":"junior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Columbia, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":100000,"max":200000,"currency":"USD","period":"year","gross":null,"usd_annual":200000},"salary_estimate":null,"experience_years_min":1,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C#","optional":false},{"name":"C++","optional":false},{"name":"Python","optional":false},{"name":"Ruby","optional":false},{"name":"Unix","optional":false},{"name":"Windows","optional":false}],"status":"live","first_seen_at":"2025-11-18T17:35:01Z","employer_posted_date":"2026-10-22","last_verified_at":"2026-10-23T13:25:45Z","board_verified":true,"closed_at":null,"days_open":338,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":338},"description":"Ready to dive into and learn the latest cyber strategies and techniques? Are you all about tackling the toughest puzzles? Ready to bring your A-game? Well, buckle up and join us at Percival - where we're all about putting people first and having a blast while we're at it. Based in Columbia, Maryland, our squad is on a big mission: developing top-notch talent and technical solutions to safeguard our nation's most critical assets. From digging deep into vulnerabilities and cracking codes to developing cutting-edge software, our team does it all. If you are a Cyber (CNO) Software Developer with a passion for innovation and a knack for thinking outside the box, we want you on our team. Let's tackle those cyber threats together - and have a blast while we're at it!\nJob Type:\nAll Levels, Full Time\nNon-Remote - Columbia, MD\nClearance & Citizenship Requirements:\nTS/SCI with polygraph is required\nDue to these clearance requirements, US citizenship is also required\nResponsibilities Include:\nProvide software development in support of custom software design and development of cyber capability tools and techniques\nDraft documentation, participate in design, code, and software rediness reviews\nWrite portable code that is compatible with multiple operating systems and architectures (Windows and/or Unix). Should be comfortable writing single and/or multi-threaded applications and inter process communication interfaces.\nCreate new novel solutions and/or integrate new features and maintain existing software solutions supporting computer network operations. Responsible for the entire lifecycle of solutions including design, development, testing, and customer support.\nWork independently and with small teams, track and report status directly to customer.\nWrite or learn a high-level programming language like Python or Ruby.\nRequired Skills & Qualifications:\nDeep knowledge of operating system internals and development environments\nC/C++ programming and Python development skills\nExperience with IPv4 Protocol and Networking\nBS degree in Computer Science or related field or 4 years of technical work experience\nMinimum one (1) year experience programming in Assembly, C, C#, C++\nDesired Skills & Qualifications:\nPreferred skills include experience in static and dynamic reverse engineering, vulnerability research, binary analysis of executables, exposure to kernel programming, exposure with assembly languages, and/or ability to analyze and signature network protocols\nApplication Process:\nAll qualified applicants will receive consideration for employment without regard to race, color, religion, sex, or national origin\nSalary Range:\nThe salary range for this role is $100K- $200K depending on experience level and qualifications. This range is a general guideline and not a guarantee of salary, as final compensation may also be influenced by contractual requirements and other considerations.\nActual compensation offered to the successful candidate may vary from posted hiring range based upon several factors including, but not limited to, level of position, job responsibilities, geographic location, work experience, education, and/or skill level.","description_format":"text","description_chars":3167,"description_truncated":false,"requirements":{"experience_years_min":1,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Defense Manufacturing","Engineering Services"],"lifecycle":[{"event":"open","at":"2026-09-18T13:41:52Z"}],"visa":[],"liveness":{"score":4,"band":"cold","label":"Long shot","p_open":1,"p_active":0.13,"p_room":0.28,"age_days":338,"expected_fill_days":28,"reasons":["conf:2","win:tail","crowd:junior"],"computed_at":"2026-10-23T05:54:15Z"},"pay":{"stated_usd_annual":200000,"is_top_pay":true},"html_url":"https://alion.io/job/percival-cyber-cno-software-developer","json_url":"https://alion.io/job/percival-cyber-cno-software-developer.json","meta":{"generated_at":"2026-10-23T16:22:44Z","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":24827,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-24T00:00:00Z"}},"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":695844},"rest":"https://alion.io/mcp/rest/get_company?id=695844"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fpercival-cyber-cno-software-developer"},{"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%2Fpercival-cyber-cno-software-developer"},{"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%2Fpercival-cyber-cno-software-developer"},{"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/percival-cyber-cno-software-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fpercival-cyber-cno-software-developer"}]}