# Senior Propulsion Engineer

**Gravitics**

- **Location:** Greater Seattle Area
- **Workplace:** Hybrid
- **Salary:** $135K–$160K
- **Clearance:** None required
- **Visa:** Not specified
- **Discipline:** Engineering
- **Seniority:** Senior
- **Posted:** 2026-02-06

[Apply on Gravitics](https://jobs.lever.co/graviticsspace/26864c32-e25d-4489-86d8-1b8f3b43ff3e)
[View on Outerspace Today](https://terminal.outerspacetoday.com
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**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**

We 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.

**Responsibilities: **

- Design, build, and test propulsion fluid systems, including feed systems, tank pressurization, propellant management, and associated fluid components

- Take ownership of propulsion subsystem architecture elements, from concept definition through hardware integration and test

- Lead system-level trade studies to evaluate performance, weight, power, and cost

- Plan and execute propulsion integration and test campaigns, including component, subsystem, and full vehicle testing

- Generate and maintain engineering documentation such as requirements, interface control documents (ICDs), test plans, and fluid system schematics

- Work cross-functionally with structures, thermal, avionics, and GNC teams to ensure propulsion system compatibility with vehicle-level performance

- Support environmental qualification and acceptance testing, including thermal-vacuum, vibration, and leak/proof pressure testing

- Actively contribute to design reviews (PDR, CDR) and drive propulsion-related technical decisions throughout the program lifecycle

- Be a reliable expert on your design from concept to mission control console

**About 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 Attributes_**

- 5+ years of experience in mechanical or aerospace engineering

- Bachelor’s degree in aerospace engineering, Mechanical Engineering, or another applicable field

- Working 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 design

- Propellant management and fluid handling

- Hardware assembly, integration, and functional testing

- Thermodynamic or fluid dynamics analysis

- Ability to understand structural, fluid, and thermal designs from first principles

- Familiarity with CAD and FEA packages such as NX and NASTRAN or similar

- Ability to thrive in a fast-moving environment with evolving requirements and a high degree of ownership

**_Bonus Points for_**

- Background in feed system design, pressurant system sizing, or propellant budgeting

- Hands-on experience assembling, integrating, and testing fluid system hardware

- Familiarity with propulsion-specific test environments, including proof/leak testing, hotfire testing, or pressure system qualification

- Experience conducting trade studies and optimizing propulsion system performance, weight, and reliability

- Familiarity with combustion, propellant chemistry, or reaction control system (RCS) design

- Experience 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 practices

- Demonstrated ability to drive complex propulsion hardware from early design through acceptance testing

- Prior experience at launch vehicle, spacecraft, or propulsion-focused organizations

- Genuine enthusiasm for advancing propulsion technology and contributing to next-generation space systems

- Proficient understanding of drafting standards and GD&T (ASME Y14.5)

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