# Mechanical 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/Mechanical-Engineer-III_JR100223?utm_source=1752vc&utm_medium=careers
- Page: https://www.1752.vc/careers/jobs/firefly-aerospace-mechanical-engineer-iii/

## About the role

Firefly is looking for talented Mechanical or Aerospace Engineers to join our Primary Structures Team. As a Senior or Lead Structures Responsible Engineer for Primary Structures, you will develop our state-of-the-art pressurized structures throughout the product life cycle for Launch Vehicles. You will be part of a highly skilled, dynamic team that will involve you in all aspects of analysis, design, fabrication, and testing. Found on 1752vc Careers, the job board for startup and VC roles.

## What they're looking for

- Formulate the comprehensive cradle to grave Road Map for your hardware - owning conceptual design, structural layout, sizing analysis, hardware production, and structural testing
- Design and development of composite pressurized structures
- Mass optimization of existing designs and requalifying designs
- Supporting products from conceptual creation, design release, analysis, prototype, qual and production
- Support configuration development and trade studies
- Maintain requirements, activity schedule, budget, and status


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