{"id":38576,"url":"https://alion.io/job/scientificsystems-senior-software-engineer-ii-modeling-and-simulation","title":"Senior Software Engineer II - Modeling and Simulation - Autonomy Systems","company":{"id":720387,"name":"Ssci","domain":"ssci.com","url":"https://alion.io/company/ssci-2","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Burlington, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":142000,"max":180000,"currency":"USD","period":"year","gross":null,"usd_annual":180000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"AFSIM","optional":false},{"name":"Agile","optional":false},{"name":"AI Agents","optional":false},{"name":"C++","optional":false},{"name":"CI/CD","optional":false},{"name":"Confluence","optional":false},{"name":"Digital Twin","optional":false},{"name":"GitHub","optional":false},{"name":"GitLab","optional":false},{"name":"HPC","optional":false},{"name":"Jira","optional":false},{"name":"Machine Learning","optional":false},{"name":"Python","optional":false},{"name":"ROS","optional":true},{"name":"STANAG","optional":true}],"status":"live","first_seen_at":"2026-03-05T00:00:00Z","employer_posted_date":"2026-03-05","last_verified_at":"2026-10-26T00:18:31Z","board_verified":true,"closed_at":null,"days_open":235,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":234},"description":"The Senior Software Engineer II position in AI/Autonomy systems development will emphasize modeling/simulation (M+S) and software testing of complex autonomy systems in operationally realistic scenarios. The successful applicant will be responsible for developing and supporting advanced M+S infrastructure for testing and evaluation of AI/Autonomy-enabled systems in multiple domains.\nEssential Functions:\nDevelop advanced M+S infrastructure, and support testing of multi-vehicle autonomy for operational environments.\nProvide relevant technical expertise as part of a team to design, implement, simulate, and test autonomy software systems for uncrewed, multi-vehicle autonomy systems. \nSupport presentation of technical information and data to internal and external customers.\nThis role may require occasional travel (10%) when necessary.\nMust be able to obtain and maintain a United States Secret Security Clearance.\nRequirements\nBasic Qualifications:\nBachelor’s degree (or higher) in Engineering, Computer Science, Data Science, Math, Statistics, Robotics or related subject area and 5+ years of related experience.\nExperience in Advanced Framework for Simulation, Integration and Modeling environment including developing new scenarios and models; C++ plugins to AFSIM; interfaces to JSE; and configuration-managed large-scale simulation test data.\nPrior experience in model-in-the-loop (MIL), software-in-the-loop (SIL), digital twin and/or LVC testing of advanced AI/autonomy software technologies.\nExperience with C/C++, Python, and relevant high-performance compute (HPC) infrastructure used for large-scale, distributed simulation (DIS) environments.\nExperience working with software technologies for Robotics, Machine Learning, and/or Multi-agent AI/Autonomy Systems.\nExperience with modern software development tool chains and processes (Agile, git/Gitlab/Github, Confluence/Jira, CI/CD and automated test methodologies, etc.).\nPreferred Qualifications:\nEstablished history of successfully leading small-team implementation of advanced AI/Autonomy software technologies and effective technical communications. \nWorking knowledge of USG DoD mission data systems and datalink architectures, such as JSE, OMS, UMAA, FACE, DDS, ROS, STANAG 4586, J-Series.\nBenefits\nSalary: $142,000 - 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