Principal Software Engineer (Test)

Lynx

USonsite$160k-$200k/yrPosted Jun 25, 2026
Posting intelligenceActively listed

Skills

confluencepythonc++jira

About the role

Job Title: Principal Software Engineer (Test)

Location: Fort Worth, TX or Palmdale, CA.

Compensation: $160,000 - $200,000 + Bonus Eligible

Security Clearance: Active Secret Clearance Required

Who we are: Founded in 2004 with locations in Atlanta, GA, Fort Worth, TX, Denver, CO, & Huntsville, AL, Thompson Software Solutions (TSS) is a mission-driven aerospace and defense software and systems engineering company supporting the U.S. military, defense primes, and commercial space partners. We specialize in the development, integration, test, and deployment of safety & mission-critical software systems that power next-generation aircraft, defense platforms, and space technologies. Our team understands what it takes to modernize complex embedded systems while maintaining the rigor, compliance, and reliability required for mission and safety-critical environments.

As a defense-focused company of highly skilled and dedicated engineers, we take pride in solving complex technical challenges that directly impact national security and operational readiness. We partner closely with customers across the military aviation and space domains to deliver resilient, future-ready solutions with portability, sustainability, and long-term mission success in mind.

Description

Thompson Software Solutions is seeking a Principal Software Engineer (Test) to support the development and validation of advanced software systems for a military aircraft platform. This is an opportunity to contribute directly to mission-critical avionics and embedded capabilities that enable the performance, safety, and effectiveness of next-generation military aviation systems.

This position requires a software engineer to use a wide application of technical principles, theories, and concepts in the software field to develop, integrate, and test software products. The successful candidate will be a member of a high-performing multi-site team and must be self-motivated with a strong work ethic, time-management, and interpersonal skills. In this role, you will work independently at times on projects, at other times will be in a collaborative team environment with other software engineers, as well as other program development and deployment teams.

Selected applicants will be subject to a government security investigation and must meet eligibility requirements for access to classified information. Continued eligibility for access to classified information is required throughout employment, as dictated by program needs.

Basic Requirements

Bachelor's degree in STEM discipline

8+ years of experience in software test/automated software test

Script Writing (Python)

Familiarity writing automated tests

Test automation using Python and scripting tools

Lab and hardware-in-the-loop integration

Ability to work onsite 100%

Ability to travel 10%

Preferred / Additional Skills

Proficient with Atlassian Tools (Confluence, JIRA, Bitbucket, etc.)

Proficient in Python development

Requirements-based testing and traceability

Digital simulation (SIL/MIL/HIL) and closed-loop testing

Systems Integration Experience

Proficient in C++

Experience communicating and documenting complex technical designs

Ability to work in a collaborative and team-based environment

Excellent written and verbal communication and presentation skills

Sound Exciting? Get in touch today! We have very robust benefits including:

Low-cost Medical / Dental / Vision coverage options

401K with generous employer match

Responsible Paid Time Off + Paid Holidays

Remote work opportunities based on role

Employee Assistance Program (EAP)

Career growth and professional development opportunities

#CJ

Compensation

This Teacher role pays $160k-$200k/yr. Within typical range for teacher roles in United States.

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