{"id":1206000,"url":"https://alion.io/job/shield-ai-senior-engineer-hms-simulation-framework-r6058","title":"Senior Engineer, HMS Simulation Framework (R6058)","company":{"id":50,"name":"Shield AI","domain":"shield.ai","url":"https://alion.io/company/shield-ai","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"B","score":75,"open_postings":55,"ghost_share":0,"stale_share":0.8,"repost_share":0,"time_to_fill_p50_days":79,"computed_at":"2026-10-12T06:55:09Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","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":["Washington, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":120000,"max":190000,"currency":"USD","period":"year","gross":null,"usd_annual":190000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"Git","optional":false},{"name":"Linux","optional":false},{"name":"Python","optional":false}],"status":"live","first_seen_at":"2026-09-24T23:01:11Z","employer_posted_date":"2026-09-24","last_verified_at":"2026-10-13T00:21:21Z","board_verified":true,"closed_at":null,"days_open":18,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":18},"description":"Job Description:\nAs a Simulation Framework Engineer on the Simulation Framework Team, you will write the C++ and Python code, design adapters, and build custom plugins for our modeling and simulation (M&S) environments and core autonomy software. Your work is hands-on and technical, creating reusable, robust software patterns that abstract simulation details away from the core autonomy stack. Integration teams own program-level software integration; this role partners with and supports those teams by diagnosing framework, plugin, and interface issues in the simulation software the team designs and maintains.\nYou will write simulation plugins and software layers for DoD-recognized simulation backends including NGTS, AFSIM, Aechelon, HMSSimBlocks, and the emerging Hivemind Simulation Framework (HMSF). Rather than managing teams, you will focus on the hands-on execution of migrating HMSSimBlocks capabilities to HMSF-building baseline adapters, porting custom modules, and ensuring functional parity-while maintaining active support and backward compatibility for programs currently relying on HMSSimBlocks.\nWhat you'll do:\nWrite, compile, and maintain baseline software adapters, plugins, and interfaces in C++ and Python for AFSIM, NGTS, Aechelon, HMSSimBlocks, and HMSF.\nExecute the hands-on technical migration from HMSSimBlocks to HMSF, porting custom HMS simulation features to HMSF while maintaining active support for legacy HMSSimBlocks users.\nDesign, implement, and maintain a reusable CIGI plugin layer across our simulation frameworks to enable seamless visual communication with Aechelon image generators.\nEnsure simulation frameworks and baseline plugins are designed for extensibility, writing clear templates and code architectures that allow other portfolios to plug in custom sensors or models.\nMaintain functional parity across simulation plugins with respect to CSF (Common Scenario Format) file loading, DDS communication capabilities, GRID interface standards, and Hivemind SDK updates.\nSupport integration teams in debugging complex simulation-autonomy issues by analyzing framework behavior, network data, DDS traffic, and API call-stacks.\nWrite robust unit tests, automated integration tests, and clear code documentation to ensure simulation stability.\nRequired qualifications:\nTypically requires a Bachelor's degree in Aerospace Engineering, Mechanical Engineering, Computer Science, Computer Engineering, Systems Engineering, or related technical discipline, or equivalent practical experience.\nStrong software development background in C++ and Python within a Linux environment.\nSolid software engineering fundamentals, including version control (Git), automated testing, and disciplined debugging.\nExperience writing or maintaining plugins, baseline interfaces, or modeling frameworks for simulation environments such as AFSIM, NGTS, or similar.\nFamiliarity with network protocols (UDP/TCP), DDS middleware, serialization, or interface standards (such as CIGI).\nExcellent technical troubleshooting skills and a desire to help other developers resolve integration bugs.\nAbility to obtain and maintain an active U.S. SECRET security clearance (U.S. citizenship required).","description_format":"text","description_chars":3209,"description_truncated":false,"requirements":{"experience_years_min":null,"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":["Military Drones","Defense Manufacturing","Defense AI","Drone 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