Senior Software Test Engineer — Automation & HWIL Lead

Firefly Aerospace, Inc.; Cedar Park (TX); On-site; USD 120,000 - 165,000; Full time

Benefits offered by this job

Health insurance

Dental insurance

Vision insurance

Parental leave

Relocation benefits

Educational reimbursement

Short term disability

Flexible PTO

Job summary

Firefly Aerospace, Inc. is seeking a Senior Software Engineer on the test team to drive software verification for flight and ground systems.

You will lead test strategy development across all-digital and hardware‑in‑the‑loop environments, mentor junior engineers, and ensure high‑quality verification before launches. You will collaborate with Flight, Ground, and Guidance teams within the Aerospace Software Engineering Group to deliver robust testing frameworks, unit test strategies, and process

Qualifications

• Bachelor’s degree in Computer Science, Engineering, or related field, or equivalent practical experience.
• 5–8+ years of experience with formal software testing.
• Strong C/C++ and Python expertise; Linux experience; ability to mentor others.

Responsibilities

• Lead the design and architecture of complex test procedures for testing software in all-digital and hardware-in-the-loop environments.
• Architect and develop robust frameworks for automating test case execution and reports.
• Mentor team members and serve as a senior technical reviewer for Merge/Pull Requests.

Skills

C/C++

Python

Leadership

Education

Bachelor’s degree in Computer Science or Engineering

Tools

Git

NASA Trick Simulation Environment

CI/CD pipelines

Linux

Job description

Firefly Aerospace, Inc. is seeking a Senior Software Engineer on the test team to drive software verification for flight and ground systems.

You will lead test strategy development across all-digital and hardware‑in‑the‑loop environments, mentor junior engineers, and ensure high‑quality verification before launches. You will collaborate with Flight, Ground, and Guidance teams within the Aerospace Software Engineering Group to deliver robust testing frameworks, unit test strategies, and process