Job Description

Job Title: Principal Systems Engineer

Location Marietta, GA

Salary Range: $160,000 - $200,000 + Bonus Eligible

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.

Thompson Software Solutions is seeking a Principal Systems Engineer to lead the development, architecture definition, integration, and verification of avionics systems for a military aircraft platform. This role is responsible for developing system and subsystem requirements using Model-Based Systems Engineering (MBSE) principles, authoring system design documentation that drives software implementation, and leading system-level verification activities including Hardware-in-the-Loop (HIL) testing.

The ideal candidate has strong experience developing avionics system requirements, applying MBSE methodologies, managing requirements, and working hands-on in lab environments to validate and troubleshoot integrated systems. This position requires a systems engineer to use a wide application of technical principles, theories, and concepts in the systems engineering field to design, develop, integrate, and test software and systems. 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 systems and software engineers, as well as other program development and deployment teams.

Basic Requirements:

·Bachelor's degree in Systems engineering, Electrical Engineering, Computer Engineering, Aerospace Engineering, or related technical field

·8+ years of systems engineering experience in avionics or safety-critical embedded systems

·Must have experience with integrating and troubleshooting systems using MIL-STD-1553, ARINC-429 & Ethernet

·Experience in avionics or defense systems design, development, and integration

·Experience applying Model-Based Systems Engineering (MBSE) principles

·Experience developing system architecture models using SysML (e.g., Cameo, Rhapsody, or similar tools)

·Demonstrated experience developing and managing requirements including traceability and verification

·Experience authoring system/subsystem design documentation that drives software implementation

·Experience developing and executing system-level and HIL test procedures

·Strong understanding of requirements verification and validation processes

·Experience troubleshooting integrated HW/SW systems in a lab environment

·Strong technical writing and documentation skills

·Ability to work onsite 100%

·Ability to travel 10%

Preferred / Additional Skills

·Experience using Agile methodologies

·Experience designing and architecting avionics systems

·Experience as a lead engineer

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

·Experience in DO-178C / DO-254 or other safety-critical development environments

·Experience supporting certification efforts

·Experience with MIL-ACAS, CAPS/SKE systems

·Solid understanding of configuration management principles

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 + 11 Paid Holidays
• Remote work opportunities based on role
• Employee Assistance Program (EAP)
• Career growth and professional development opportunities

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status.