# Spacecraft Thermal Engineer III at Firefly Aerospace

- Company: Firefly Aerospace
- What the company does: Firefly Aerospace engages in providing economical and convenient access to space for small payloads through the design, manufacture, and operation of reliable launch vehicles. Backed by Space Capital.
- Company website: https://fireflyspace.com
- Type: Startups
- Level: Mid level
- Location: Cedar Park, TX
- Work setup: On-site
- Posted: 2026-10-22
- Apply by: 2026-12-06
- Apply: https://fireflyspace.wd115.myworkdayjobs.com/en-US/Firefly/job/Cedar-Park-TX/Spacecraft-Thermal-Engineer-III_JR100230?utm_source=1752vc&utm_medium=careers
- Page: https://www.1752.vc/careers/jobs/firefly-aerospace-spacecraft-thermal-engineer-iii/

## About the role

This role requires deep expertise in spacecraft thermal engineering, strong technical judgment, and the ability to independently lead multidisciplinary efforts involving analysis, testing, and vehicle design. Found on 1752vc Careers, the job board for startup and VC roles.

## What they're looking for

- Lead thermal analyses that drive major vehicle design decisions across multiple spacecraft programs
- Own the architecture, validation, and long-term maintenance of integrated spacecraft thermal models
- Develop innovative analytical methods, workflows, and automation that improve team capability and efficiency
- Lead thermal trade studies involving mission environments, propulsion effects, lunar surface interactions, cryogenics, and advanced thermal control technologies
- Define thermal analysis strategies supporting conceptual design through flight
- Organize and lead testing, including vehicle-level thermal vacuum testing


Source: 1752vc Careers, https://www.1752.vc/careers/jobs/firefly-aerospace-spacecraft-thermal-engineer-iii/