Senior Propulsion Engineer
Gravitics
Seattle, WA, USA
USD 135k-160k / year + Equity
Posted on Feb 7, 2026
About Gravitics
At Gravitics, we're not just 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 the large-scale structures and systems that will power human and robotic activity in Earth orbit and beyond. 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 Role
To build our giant space systems, we need rockstars of all experience levels who can directly work the full product lifecycle of an in-space propulsion system, including thrusters, valves,andpropellant & pressurization systems.
Responsibilities:
· Own the development of hardware for fluid system applications including valves, tubing, brackets, manifolds, and thrusters.
· Perform structural, thermal, and fluids analyses to define and verify component and system requirements and behavior.
· Generate system diagrams, system CAD, component drawings, and detailed requirements.
· Support procurement of components and external design reviews.
· Define test plans and interface with manufacturing to accept production hardware for flight.
· Manage project schedules, risk, and budget
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 Attributes
· Direct experiencewith in-spacechemicalpropulsion systems and demonstratedpastownership of complex fluid or mechanical projects.
· Ability tounderstand structural, fluid, and thermal designs from first principles.
· Familiarity with CAD and FEA packages such as NX and NASTRAN or similar.
· 5+ years of industry experience.
· Bachelor’s degree in an applicable field.
Bonus Points for
· Experience designing test or flight fluid systems for high pressure gases or liquids.
· Strong understanding and application of drafting standards and GD&T (ASME Y14.5).
· Familiarity with safety critical systems,oxygen systems,pressure vessels, relief devices,igniters/exciters,and/or small thrusters.
· Experience with prop/fluid system analysis tools such as ROCETS, GFSSP, CEA, TDK.
· Proficiencyin Python.
About Compliance
To 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.
Gravitics is an Equal Opportunity Employer; employment with Gravitics is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability, or any other legally protected status or common decency.
135000 - 160000 USD a year
Compensation and Benefits
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.