{"id":4173846,"url":"https://alion.io/job/sierra-lobo-structrual-systems-engineer","title":"Structrual Systems Engineer","company":{"id":2585284,"name":"Sierra Lobo","domain":"sierralobo.com","url":"https://alion.io/company/sierralobo","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"iCIMS","truth_index":null},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"staff","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Pasadena, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":20,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Abaqus","optional":false},{"name":"Femap","optional":false},{"name":"Nastran","optional":false},{"name":"GD&T","optional":true}],"status":"live","first_seen_at":"2026-11-12T15:26:40Z","employer_posted_date":"2026-11-12","last_verified_at":"2026-11-12T15:26:40Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Overview\nSierra Lobo, offers customers a full range of professional and technical capabilities, including Test and Evaluation, Systems Engineering, and Advanced Technologies. We also develop products and processes related to Cryogenic Fluid and Thermal Management Systems, Densified Propellant Management Systems, and Prototype Extreme Pressure and Temperature Systems. Our customers include the Department of Defense (DoD), the U.S. Air Force, U.S. Navy, U.S. Army, Missile Defense Agency (MDA), and the National Aeronautics and Space Administration (NASA).\nResponsibilities\nWe are seeking Principal Structural Systems Engineers to support the design, development, integration, test and documentation of mechanical hardware for aerospace and space exploration programs for our government and commercial customers.\nThe ideal candidate working as a Structural Systems Engineer. In this role, you will:\nPerform structural design and analysis to ensure the structural integrity of subsystem and system-level hardware and the associated support structures.\nPerform structural analysis utilizing classical solutions and finite element analysis (FEA) method for flight projects and/or technology tasks and/or proposal developments.\nPerform detailed stress/structural analysis, dynamic analysis, and pre-test analysis.\nBuild finite element models from scratch, using hand calculations when appropriate, to determine critical areas in structure and determine efficient and adequate approaches for analysis independently.\nContribute to the design process of mechanical assemblies from engineering requirements to engineering drawings including suggestions and feedback on areas of concern based on analysis, mechanical intuition, and engineering judgement.\nSupport formal and on-the-fly review of mechanical designs and analyses.\nSupport and present analysis results at team, and technical reviews.\nPlan and support and conduct static, dynamic and pyro-shock tests and develop test reports.\nPerform tasks within team environment and collaborate on tasks that span the breadth of engineering disciplines.\nQualifications\nRequired Skills:\nBachelor’s degree in Mechanical Engineering or related technical discipline with a minimum of 20 years of related experience; or a Master’s degree with a minimum of 15 years related experience or PhD in similar disciplines.\nIntimate knowledge of NASA and JPL design, analysis, and test standards, i.e. NASA-STD-5001, NASA-HDBK-7004, etc.\nMastery of structural engineering, analysis, and verification of flight structures (spacecraft, instruments and GSE), composite structures, bonded joints, mechanisms, flexures opto-mechanical and thermo-mechanical assemblies.\nAdvanced experience in MSC Nastran, NX-Nastran, Siemens Simcenter, FEMAP, Abaqus, MSC.ADAMS or LS-DYNA.\nExtensive knowledge of industry and/or academic practices and standards related to structural mechanics, finite element analysis, and structural verification testing.\nDesired Skills:\nExperience in completing structural analysis of complex and unique flight mechanical systems and detailed analysis of its components.\nAbility to present structural margins & analyses to project management and provide design recommendations.\nAbility to develop and conduct structural verification test programs for space flight hardware.\nAbility to troubleshoot mechanical, mechanism, and/or structural anomalies and failures.\nAbility to develop innovative design solutions to meet design requirements and resolve technical challenges.\nKnowledge of Standards for Geometric Dimensioning and Tolerancing (GD&T) per American Society of Mechanical Engineers (ASME) Y14.5.\nExcellent verbal and written communication skills.\nExcellent collaboration skills and ability to work across subject areas and 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