{"id":636539,"url":"https://alion.io/job/grvty-software-engineer-senior-2","title":"Software Engineer, Senior","company":{"id":4723,"name":"GRVTY","domain":"grvty.com","url":"https://alion.io/company/grvty","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":78,"open_postings":39,"ghost_share":0,"stale_share":0.897,"repost_share":0,"time_to_fill_p50_days":58,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Backend","role_family":"Backend","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":["Dayton, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":124000,"max_usd":227000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":3287},"experience_years_min":9,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Bitbucket","optional":false},{"name":"Git","optional":false},{"name":"GitLab","optional":false},{"name":"Jenkins","optional":false},{"name":"Jira","optional":false},{"name":"Linux","optional":false},{"name":"Machine Learning","optional":false},{"name":"Python","optional":false},{"name":"Windows","optional":false},{"name":"C++","optional":true},{"name":"CI/CD","optional":true},{"name":"Java","optional":true},{"name":"MATLAB","optional":true},{"name":"NumPy","optional":true},{"name":"OpenCV","optional":true},{"name":"PyTorch","optional":true},{"name":"PyTorch C++","optional":true},{"name":"Rust","optional":true},{"name":"Scikit-learn","optional":true},{"name":"SciPy","optional":true},{"name":"TensorFlow","optional":true},{"name":"TensorFlow C++","optional":true}],"status":"live","first_seen_at":"2026-07-06T19:49:13Z","employer_posted_date":"2026-09-21","last_verified_at":"2026-10-18T08:23:55Z","board_verified":true,"closed_at":null,"days_open":103,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":103},"description":"What Impact You'll Have\nGRVTY is looking for a Senior Software Engineer to join a small, technically focused team supporting national security missions at a customer site in Dayton, Ohio. This is hands-on engineering work - you will be designing and building Python-based software tools that support optical signature modeling, spectral data analysis, and machine learning-enabled sensor workflows. The work spans algorithm development, data pipeline construction, and integration of ML capabilities into operational and analytical environments.\nYou will work directly with scientists, sensor domain experts, and intelligence analysts - translating complex technical requirements into functional, maintainable software. This is not a role for someone looking to coast. We want someone who is technically sharp, can operate with a degree of autonomy, and understands that the software they build has real downstream impact on mission outcomes.\nWhat You'll be Owning\nDesign, develop, and maintain Python-based software tools supporting optical signature modeling, spectral sensor data processing, and analytical workflows.\nWork with sensor physicists, data scientists, and machine learning engineers to translate technical concepts and mission requirements into working software.\nBuild and optimize data pipelines for ingesting, processing, and analyzing large-scale scientific and sensor datasets.\nDevelop and integrate machine learning workflows - including training data preparation, model integration, and evaluation - into operational toolsets.\nCreate clear software architecture documentation, workflow diagrams, and code structure so tools can be maintained, extended, and transitioned effectively.\nTest, validate, and troubleshoot algorithms and software modules across development and deployment environments, including classified workspaces.\nManage and maintain Git repositories with discipline - clean commits, meaningful documentation, and reproducible builds.\nContribute to a culture of technical rigor: peer reviews, coding standards, and honest engagement with complex problems.\nWhat You Must Have\nActive Top Secret clearance with ability to obtain SCI and CI polygraph.\nBachelor's degree in Computer Science, Engineering, Physics, Mathematics, Data Science, or a related STEM field. Equivalent hands-on experience will be considered.9+ years of professional software development experience, with demonstrated focus on scientific computing, algorithm development, data processing, or related technical domains or 7+ years of experience and a Masters degree\n\nExpert-level Python programming, including object-oriented design, modular architecture, and production-quality code.\nExperience developing software for data-intensive workflows - sensor data, scientific data, simulation, or equivalent.\nAbility to work from technical or scientific requirements and produce well-structured software architecture, logic flows, and implementation plans.\nComfortable operating in both Windows and Linux environments, including secure or classified customer workspaces.\nFamiliarity with source control and development tooling: Git, GitLab, Bitbucket, Jira, Jenkins, or equivalent.\nStrong communication skills - able to work directly with domain experts who are not software engineers and translate what they need into software that actually works.\nWhat Would be Nice to Have\nExperience with optical signature modeling, EO/IR sensor data, spectral analysis, or hyperspectral data processing.\nFamiliarity with machine learning frameworks and workflows: PyTorch, TensorFlow, scikit-learn, or equivalent.\nExperience with scientific Python libraries: NumPy, pandas, OpenCV, SciPy, or similar.\nBackground in signal processing, image processing, or remote sensing data workflows.\nExperience with simulation, modeling, or mission analysis software in a defense or intelligence context.\nFamiliarity with ML/Ops practices - training pipelines, data labeling, model evaluation, and deployment workflows.\nExperience integrating algorithms into existing operational software suites.\nProficiency in a secondary technical language: C, C++, MATLAB, Java, or Rust.\nAdvanced degree in a relevant technical field (Computer Science, Electrical Engineering, Physics, Image Science, or related).\nPrior experience supporting defense, intelligence, or classified customer environments.\nExperience with CI/CD practices, automated testing, and DevSecOps tooling.\nWhy Choose GRVTY\nThe toughest national security challenges demand vision and ingenuity, not just resources. We deliver mission and technical expertise to outpace our adversaries. We’re purpose-built to tackle the most entrenched, systemic national security issues around the world.\nWe partner with our customers to help them overcome challenges in every corner of technology and defense-including the ones still being explored. Our growing capabilities create complementary advantages, giving on-the-ground operations the edge they need to succeed. We muster everything we have to answer every challenge presented, every day of our lives.\nAt GRVTY, we believe that when our employees thrive, our company thrives. That’s why we offer a comprehensive and competitive benefits package designed to support your well-being, growth, and work-life balance.\n Robust health plan including medical, dental, and vision \n Health Savings Account with company contribution \n Annual Paid Time Off and Paid Holidays \n Paid Parental Leave \n 401k with generous company match \n Training and Development Opportunities \n Award Programs \n Variety of Company Sponsored Events\nEEO Statement\nGRVTY, 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, disability, or status as a protected veteran and will not be discriminated against on the basis of disability. \nAnyone requiring reasonable accommodations should email  or call 703-544-7930 with requested details. A member of the HR team will respond to your request within 2 business days.\nKnow Your Rights: Workplace Discrimination is Illegal (eeoc.gov) \nPlease review our current job openings and apply for the positions you believe may be a fit. If you are not an immediate fit, we will also keep your resume in our database for future opportunities.","description_format":"text","description_chars":6386,"description_truncated":false,"requirements":{"experience_years_min":9,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":["401k plan","Parental leave"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["National Security","Intelligence"],"lifecycle":[{"event":"open","at":"2026-09-10T19:43:21Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 1","filings_12m":1,"filings_prev_12m":0,"green_card_filings_12m":0,"median_offered_wage_usd":137500,"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)"],"filings_for_role_12m":1}],"liveness":{"score":17,"band":"cold","label":"Long shot","p_open":1,"p_active":0.483,"p_room":0.36,"age_days":102,"expected_fill_days":58,"reasons":["conf:3","stale_co","velocity","win:tail","crowd:brand"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/grvty-software-engineer-senior-2","json_url":"https://alion.io/job/grvty-software-engineer-senior-2.json","meta":{"generated_at":"2026-10-18T10:14:21Z","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":15279,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-19T00:00:00Z"}},"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":4723},"rest":"https://alion.io/mcp/rest/get_company?id=4723"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fgrvty-software-engineer-senior-2"},{"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%2Fgrvty-software-engineer-senior-2"},{"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%2Fgrvty-software-engineer-senior-2"},{"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/grvty-software-engineer-senior-2\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fgrvty-software-engineer-senior-2"}]}