# Senior Thermal Fluids Engineer

> Karman+ · Broomfield, United States · Full-time · Posted 2026-07-09

**Salary:** USD 130,000–170,000

**Workplace:** on_site

**Department:** Propulsion

## Description

At Karman+, we’re building spacecraft systems that will take us beyond Earth orbit. As a Senior Thermal Fluids Engineer, your role would be to drive development of critical systems for a deep space vehicle like propellant tanks, valves, flow management systems, and refueling interfaces.

## Requirements

### Key Responsibilities

-   Drive the design and testing of propellant delivery systems.
-   Oversee thermal system design, ensuring proper design and control strategies to maintain subsystem performance in space.
-   Execute build vs buy trades for system components, and manage vendor relationships.
-   Size propellant tanks, and drive thermal design for a unique mission profile.
-   Collaborate with other teams to support solar electric propulsion systems. 
-   Manage range safety compliance and propellant loading plans.
-   Drive trades for advanced vehicle capabilities, like refueling architectures and multimode propellant systems.

### What You Bring

-   A desire to push the envelope of how industry approaches fluid and thermal systems, and enable capabilities like ISRU, and a space based economy. 
-   Deep experience years in aerospace engineering, ideally working on electric in space propulsion. 
-   Expertise in thruster design, propellant systems, heat transfer, and space-rated thermal management.
-   Hands-on problem-solving skills with proficiency in tools like FEA and CFD for thermal analysis, propulsion modeling software, and CAD.
-   Proven track record of delivering high-stakes engineering projects and collaborating with multidisciplinary teams.
-   Clear communication skills to engage technical and non-technical stakeholders.

## Apply

[Apply at Karman+](https://apply.workable.com/karmanplus/j/BFB8AE4288/apply)

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