{"id":776573,"url":"https://alion.io/job/apextk-junior-trajectory-engineer","title":"Junior Trajectory Engineer","company":{"id":693848,"name":"APEX TK","domain":"apextk.com","url":"https://alion.io/company/apextk","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":"2026-09-26T05:45:00Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","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":["Huntsville, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":55000,"max_usd":105000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":1220},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C#","optional":false},{"name":"Java","optional":false},{"name":"MATLAB","optional":false},{"name":"Microsoft Office","optional":false},{"name":"Python","optional":false}],"status":"live","first_seen_at":"2026-08-28T03:59:22Z","employer_posted_date":"2026-08-28","last_verified_at":"2026-09-27T03:52:02Z","board_verified":true,"closed_at":null,"days_open":29,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":29},"description":"General Overview\nAPEX TK is seeking a skilled Trajectory Engineer to support the Missile Defense Agency (MDA) Targets and Countermeasures Engineering Directorates. In this role, you will provide critical engineering expertise to the team responsible for performing pre-mission trajectory validation and performance analysis for the for the flight test events along with onsite expertise during flight events.\nWhat You'll Be Doing:\nSupport the Missile Defense Agency (MDA) Targets and Countermeasures (TC) program office with development of ballistic missile target vehicles\nSupport the TC System Engineering team in all aspects of target design, analysis, and test to include requirements development and assessment, modeling and simulation, test analysis and reporting\nTechnical focus areas include modeling and simulation, trajectory development and analysis, coordinate system transformations, and vehicle performance assessments\nGenerate and analyze target vehicle 6DOF trajectory data\nSupport mission planning, analysis, and reporting activities\nCollaborate with a dynamic team of experts in multiple technical areas to develop analysis and engineering tools\nEngage in database requirements definition, schema development, interface development, testing, data management, and documentation\nUtilize knowledge, skills and experience with missile characteristics (physical, kinematics, signatures) and engineering to support engineering activities and data product development\nWhat Required Skills You'll Bring:\nBachelor's degree in STEM with 3+ years of relevant experience\nActive DoD Secret security clearance, which requires US Citizenship\nProficiency with MATLAB, Python, Java, C#, and other programming languages\nStrong oral and written communication skills\nProficient in Microsoft Office (Word, Excel and PowerPoint)\nWhat Desired Skills You'll Bring:\nFamiliarity with MDA and/or DoD programs and processes\nExperience with trajectory development tools (e.g., TAOS, POST)\nExperience in any or all of the following disciplines: Design, CAD, Trajectory, Radar Cross Section (RCS) Signatures, Optical Signatures\nStrong attention to detail and ability to efficiently perform multiple tasks\nAbility to communicate detailed technical information to technical and non-technical personnel","description_format":"text","description_chars":2286,"description_truncated":false,"requirements":{"experience_years_min":3,"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":["Artificial Intelligence","Machine Learning","Industrial Engineering"],"lifecycle":[{"event":"open","at":"2026-09-11T23:11:43Z"}],"liveness":{"score":53,"band":"ok","label":"Likely open","p_open":1,"p_active":0.711,"p_room":0.75,"age_days":29,"expected_fill_days":30,"reasons":["conf:1","velocity","win:late","comp:junior"],"computed_at":"2026-09-26T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/apextk-junior-trajectory-engineer","json_url":"https://alion.io/job/apextk-junior-trajectory-engineer.json","meta":{"generated_at":"2026-09-27T03:58:46Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":3715,"day_limit":5000,"remaining_today":1285,"minute_limit":60,"resets_at":"2026-09-28T00:00:00Z"}}}