{"id":2506429,"url":"https://alion.io/job/parrainc-front-end-software-developer-modeling-simulation-hitl","title":"Front-End Software Developer -- Modeling & Simulation / HITL","company":{"id":4420385,"name":"PCG","domain":"parrainc.com","url":"https://alion.io/company/parrainc","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"BambooHR","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":"2026-10-15T05:46:00Z"}},"role":"Frontend","role_family":"Frontend","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Angular","optional":false},{"name":"C++","optional":false},{"name":"CI/CD","optional":false},{"name":"Gazebo","optional":false},{"name":"Git","optional":false},{"name":"Human-in-the-Loop","optional":false},{"name":"JavaScript","optional":false},{"name":"MATLAB","optional":false},{"name":"Python","optional":false},{"name":"React.js","optional":false},{"name":"Rest API","optional":false},{"name":"ROS","optional":false},{"name":"Simulink","optional":false},{"name":"TypeScript","optional":false},{"name":"Unity","optional":false},{"name":"Unreal Engine","optional":false},{"name":"Vue.js","optional":false},{"name":"WebSockets","optional":false}],"status":"live","first_seen_at":"2026-08-28T00:00:00Z","employer_posted_date":"2026-08-28","last_verified_at":"2026-10-15T19:56:07Z","board_verified":true,"closed_at":null,"days_open":48,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":48},"description":"Parra Consulting Group (PCG) is seeking a Front-End Software Developer -- Modeling & Simulation / HITL to develop modern software interfaces supporting modeling and simulation, hardware-in-the-loop (HITL), and advanced engineering environments for critical national security missions. This role builds intuitive applications that allow engineers and operators to configure systems, visualize complex data, control simulations, and interact with physical and simulated hardware. This position is located at Aberdeen Proving Ground, Maryland.\nMore About the Role\nAs a Front-End Software Developer, you'll design and implement user interfaces for engineering, simulation, and test applications. You'll work closely with modeling and simulation engineers, embedded developers, hardware engineers, and systems engineers to translate complex technical workflows into usable software. The ideal candidate combines strong modern front-end development skills with experience integrating applications with real-time data, simulation environments, or HITL systems.\nRequired Qualifications\nActive TS/SCI security clearance.\nExperience developing production-quality front-end applications using modern JavaScript or TypeScript frameworks such as React, Angular, Vue, or similar.\nStrong proficiency with HTML, CSS, JavaScript/TypeScript, and modern web application architecture.\nExperience integrating front-end applications with REST APIs, WebSockets, message-based interfaces, or other backend services.\nExperience developing data-intensive interfaces, dashboards, visualization tools, or engineering applications.\nFamiliarity with software development practices including Git, automated testing, code review, and CI/CD.\nAbility to work directly with engineers and technical users to translate complex system requirements into effective user interfaces.\nDesired Qualifications\nExperience supporting modeling and simulation (M&S)\nExperience developing software for hardware-in-the-loop (HITL) or software-in-the-loop (SITL)\nExperience visualizing or interacting with real-time telemetry, sensor data, system state, or simulation outputs.\nFamiliarity with Python, C++, or other languages commonly used in engineering and simulation environments.\nExperience with 2D/3D visualization, geospatial interfaces, plotting, or scientific visualization libraries.\nFamiliarity with simulation tools or frameworks such as MATLAB/Simulink, ROS/ROS 2, Unreal Engine, Unity, Gazebo, or similar.\nExperience integrating software with unmanned systems, robotics, embedded systems, test equipment, or physical hardware.\nExperience developing applications for aerospace, defense, autonomy, or other complex engineering environments.\nWhy Join PCG\nParra Consulting Group offers a collaborative, mission-focused environment where your expertise directly supports national security operations. PCG provides competitive compensation, 100% employer-paid medical/dental/vision coverage, life and disability insurance, and a PTO plan to ensure professional growth and work-life balance.","description_format":"text","description_chars":3045,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":true,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-14T07:34:14Z"}],"visa":[],"liveness":{"score":23,"band":"cold","label":"Long shot","p_open":1,"p_active":0.414,"p_room":0.55,"age_days":48,"expected_fill_days":33,"reasons":["conf:0","win:tail"],"computed_at":"2026-10-15T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/parrainc-front-end-software-developer-modeling-simulation-hitl","json_url":"https://alion.io/job/parrainc-front-end-software-developer-modeling-simulation-hitl.json","meta":{"generated_at":"2026-10-15T23:53:46Z","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":36026,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-16T00:00:00Z"}},"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":4420385},"rest":"https://alion.io/mcp/rest/get_company?id=4420385"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fparrainc-front-end-software-developer-modeling-simulation-hitl"},{"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%2Fparrainc-front-end-software-developer-modeling-simulation-hitl"},{"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%2Fparrainc-front-end-software-developer-modeling-simulation-hitl"},{"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/parrainc-front-end-software-developer-modeling-simulation-hitl\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fparrainc-front-end-software-developer-modeling-simulation-hitl"}]}