Senior Propulsion Engineer

Job Description About GraviticsAt Gravitics, we're not exploring space—we're building it. We're creating the infrastructure for a thriving space economy, enabling humanity to flourish beyond Earth. Our vision is bold, but we're not just dreamers; we're doers. We design and manufacture large-scale orbital structures that enable commercial operations while meeting the requirements of defense and government missions. Our systems are built to scale and built to last—bridging commercial innovation with mission-critical performance. If you're ready to lay the foundations for a new era in space, embrace a culture of relentless learning and innovation, and contribute to a future where humanity's reach extends farther, Gravitics is the place for you. Let's build the future together. About the RoleWe are looking for rockstars who can work the full product lifecycle of an in-space propulsion system from design through build and integration. You will own major fluid subsystems to develop a propulsion system that operates flawlessly regardless of the mission.ResponsibilitiesDesign, build, and test propulsion fluid systems, including feed systems, tank pressurization, propellant management, and associated fluid componentsTake ownership of propulsion subsystem architecture elements, from concept definition through hardware integration and testLead system-level trade studies to evaluate performance, weight, power, and costPlan and execute propulsion integration and test campaigns, including component, subsystem, and full vehicle testingGenerate and maintain engineering documentation such as requirements, interface control documents (ICDs), test plans, and fluid system schematicsWork cross-functionally with structures, thermal, avionics, and GNC teams to ensure propulsion system compatibility with vehicle-level performanceSupport environmental qualification and acceptance testing, including thermal-vacuum, vibration, and leak/proof pressure testingAbout You You're a successful candidate if you are a giver, not a taker. You make things happen. You are exceptional at several things, yet willing to take on efforts in areas of weakness. Required Attributes5+ years of experience in mechanical or aerospace engineeringBachelor's degree in aerospace engineering, Mechanical Engineering, or another applicable fieldWorking knowledge of propulsion or fluid system components (feed systems, pressurization, valves, regulators, or similar)Exposure to one or more of the following:Liquid or gas propulsion system designPropellant management and fluid handlingHardware assembly, integration, and functional testingThermodynamic or fluid dynamics analysisAbility to understand structural, fluid, and thermal designs from first principlesFamiliarity with CAD and FEA packages such as NX and NASTRAN or similarAbility to thrive in a fast-moving environment with evolving requirements and a high degree of ownershipBonus Points forBackground in feed system design, pressurant system sizing, or propellant budgetingHands-on experience assembling, integrating, and testing fluid system hardwareFamiliarity with propulsion-specific test environments, including proof/leak testing, hotfire testing, or pressure system qualificationExperience conducting trade studies and optimizing propulsion system performance, weight, and reliabilityFamiliarity with combustion, propellant chemistry, or reaction control system (RCS) designExperience with CFD, thermal fluid system modeling, and/or combustion modeling tools (e.g., Thermal Desktop, ANSYS Fluent, MATLAB/Simulink, ROCETS, GFSSP, CEA, TDK)Experience in high-reliability or safety-critical fluid systems with formal verification and validation practicesDemonstrated ability to drive complex propulsion hardware from early design through acceptance testingPrior experience at launch vehicle, spacecraft, or propulsion-focused organizationsGenuine enthusiasm for advancing propulsion technology and contributing to next-generation space systemsProficient understanding of drafting standards and GD&T (ASME Y14.5)Compensation and BenefitsFor Marysville, WA, the expected base salary range for this role is $135,000 - 160,000. Your level and base salary will be determined on a case-by-case basis and may vary based on the considerations of job-related knowledge and skills, education, and direct experience. Salary is just one component of the total employee package, which also includes company equity at an exciting time of company growth, as well as comprehensive medical, 401(k) retirement plan, a generous PTO policy, employee discounts, and more. About ComplianceTo conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State.Do you have the skills to fill this role Read the complete details below, and make your application today.Gravitics is an Equal Opportunity Employer. xaygatp Employment decisions are based on merit, qualifications, and business needs, without regard to race, color, religion, sex, gender identity or expression, sexual orientation, national origin or ethnicity, age, disability, veteran status, marital status, or any other legally protected status.Salary Range$135,000—$160,000 USD