{"id":2002063,"url":"https://alion.io/job/lockheed-martin-staff-mass-properties-engineer","title":"Staff Mass Properties Engineer","company":{"id":37086,"name":"Lockheed Martin","domain":"lockheedmartin.com","url":"https://alion.io/company/lockheedmartin","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Eightfold","truth_index":{"grade":"A","score":99,"open_postings":83,"ghost_share":0,"stale_share":0,"repost_share":0.048,"time_to_fill_p50_days":27,"computed_at":"2026-10-08T05:49:30Z"}},"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":["King of Prussia, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":105000,"max_usd":210000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":1026},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"MATLAB","optional":true}],"status":"live","first_seen_at":"2026-08-12T16:26:36Z","employer_posted_date":"2026-09-16","last_verified_at":"2026-10-08T21:51:17Z","board_verified":true,"closed_at":null,"days_open":57,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":57},"description":"Standard Job Description\nSpace is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more - we can innovate, invest, inspire and integrate our capabilities to transform the future.\nAt Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us, ensuring security and prosperity.\nJoin us in shaping a new era in space and find a career that's built for you.\nMass Properties Engineering is the art and science of predicting the mass properties of a satellite, missile, aircraft, land vehicle or marine system before it is built, assessing and supervising the mass properties all through development, and finally performing highly accurate measurements to prove to our customers it will perform as proposed. Our Mass Properties Engineers help ensure our spacecraft get payloads to the right orbit around our planet or around other objects in our solar system, help our missile systems intercept a threat and protect our troops, help deliver a payload with pinpoint accuracy, or help us develop smaller, lightweight directed energy weapons, so they can be deployed on a variety of platforms.\nAs a Mass Properties Engineer, you will:\nProvide Mass Properties Engineering support to multiple missile, reentry systems, or special programs\nCalculate mass properties and update and maintain mass properties database\nPerform basic trade studies and make presentations at program design reviews\nLead mass properties audits, develop test procedures and perform mass properties measurements, then reduce and interpret measurement data into final user values\nFacilitate Mass Properties Control Boards and weight reduction teams\nDocument and publish all types of analysis reports\nLead the mass properties effort on small programs\nTo promote the sharing of ideas, we at Lockheed Martin champion at work environment that supports differences and big-picture thinking.\nYou have opportunities to play an active role in strengthening the quality of life where we live and work by volunteering more than 850,000 hours annually.\nHere are some of the benefits you can enjoy:\nMedical\nDental\n401k\nPaid time off\nWork/life balance\nCareer development\nMentorship opportunities\nRewards & recognition\nWe will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation.\nResearches, plans, designs and develops mechanical products and systems such as instruments, controls, robots, engines, machines and mechanical, thermal hydraulic or heat transfer systems for production, transmission, measurement, and use of energy. Applies research to the planning, design, development, and testing of mechanical and/or electromechanical systems, instruments, controls, engines, and/or machines.\nBasic Qualifications\nProficiency in calculating the mass properties (mass, 3 axis centers of gravity, moments and products of inertia) of components and performing summation calculations into assemblies; developing simple software tools to perform these calculations\nPerforming mass properties analysis to resolve weight, center of gravity, mass moments of inertia, and products of inertia from assemblies down to the component level; tracking changes impacting mass properties; preparing mass properties reports and supporting design reviews\nInterpreting detailed mechanism designs taken from manufacturing drawings or standard modeling software tools\nDemonstrated experience in weight and center of gravity measurements by platform and multiple load cell methods, data reduction, and simple error analysis\nAbility to develop and maintain mass properties databases and configuration control.\nKnowledge and proficiency in applying industry standards (e.g., AIAA S 120 2015, TR-2018-01203, SAWE RP-9, SAWE RP-10).\nProficient in CAD (preferably PTC Creo) to extract component and assembly mass properties, perform model interrogation, and support engineering analyses.\n US Citizenship with a Secret security clearance required prior to start\nDesired Skills\nBachelor's degree in Engineering (Mechanical, Aerospace), Physics, or Mathematics\nDemonstrated understanding of and interactions of other mechanical analysis groups including stress, structural loads and dynamics, thermodynamics, aerodynamics, propulsion and power systems, as well as subsystem designers to promote mass properties efficient design alternatives\nIn depth hands on experience with mass properties testing specifically with spin balance (rotary type) mass properties machines for aerospace components and assemblies, including: planning and executing spin balance test campaigns, leading static and dynamic balancing procedures, interpreting imbalance results, and applying corrective balance mass to bring parts within tolerance, documenting test results in compliance with aerospace standards and integrating findings into system level mass properties models.\nExperience with applying manual and statistical tolerance analysis (Root Sum Square (RSS), Monte Carlo, worst case, etc..).\nServe as the mass properties SME for proposals/RFPs, quickly producing preliminary weight, balance, and inertia models using parametric estimations and historical data, and delivering clear, data driven analyses that support cost, performance, and schedule assessments.\nTake task direction and prioritization from senior engineers and management in mass properties analysis, control, verification and database methods\nSelf-starter and able to perform multiple mass properties tasks\nPerform simple mass properties estimation of preliminary design concepts.\nDemonstrated proficiency with Microsoft Word, Excel and Power Point, solid modeling applications (IDEAS, Pro-E, or CREO), Mathcad and/or MATLAB and an understanding of other software analysis tools.\nExperience as a key contributor for weight control and reduction efforts\nAbility to support technical concerns with respect to weight reductions \nAbility to write Mass Properties procedures, practices and/or specifications\nExperience working on united product team, interacting with other engineering fields, technicians, subcontractors, and customer\nFamiliarity with manufacturing and assembly techniques & processes, developing test procedures, and performing data reduction\nDemonstrated behaviors of a systems thinker with the ability to select and apply appropriate systems thinking skills to solve problems and implement constructive change \nMissile or space segment design and test experience with one or more subsystems or fields outside of Systems Engineering\nExcellent written and verbal communications skills, strong social skills, and ability to build consensus among peers while building solid relationships with team members\nActive Secret security clearance with the ability to acquire and maintain a Top-Secret security clearance\nPay Information\nFull-Time Salary Range: $118000.00 - $219100.00\nAt Lockheed Martin, we know mission success starts with taking care of our people. Our Total Rewards program is designed to attract top talent, support your well-being, and help you grow-both professionally and personally.\nThe salary range for this position is as listed on the requisition. Please note that the salary information listed is a general guideline only. Lockheed Martin considers factors such as (but not limited to) scope and responsibilities of the position, candidate's work experience, education/ training, key skills as well as market(work location) and business considerations when extending an offer.\nBenefits offered: Medical, Dental, Vision, Flexible work arrangements and schedules (e.g., 4x10), 401(k) match, Paid time off, Holidays, Parental Leave, EAP, Flexible Spending Accounts, Education Assistance, Life Insurance, Short-Term Disability, and Long-Term Disability.\nAnnual short-term and/or long-term incentive compensation programs may be offered depending on the position. Payments under these annual programs are not guaranteed and can vary from year to year and are tied to a range of performance metrics.\nFor (Washington state applicants only) Non-represented full-time employees: accrue at least 10 hours per month of Paid Time Off (PTO) to be used for incidental absences and other reasons; receive at least 90 hours for holidays. Represented full time employees accrue 6.67 hours of Vacation per month; accrue up to 52 hours of sick leave annually; receive at least 96 hours for holidays. 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