Sr. Software Engineer

Lynx; Huntsville (AL); On-site; USD 120,000 - 165,000; Full time

Benefits offered by this job

Medical/Dental/Vision options

401K with employer match

PTO and Holidays

Remote work opportunities based onrole

EAP

Job summary

Thompson Software Solutions is seeking a Senior Software Engineer to support the development of embedded flight software and GNC capabilities for an advanced missile platform. This role offers design and integration of mission-critical software operating in real-time environments with strict timing requirements in Huntsville, AL.

You will work at the intersection of software, hardware, and control algorithms to ensure accurate sensor processing, state estimation, and actuator command execution.

Qualifications

• Bachelor's degree in STEM discipline.
• 5+ years of embedded software development.
• Experience with C/C++ for embedded systems.
• Experience with I&T integration and test.
• Proficient with Linux and Windows development environments.
• Active Secret Clearance Required.
• Ability to work onsite 100%.

Responsibilities

• Develop embedded flight software for missile guidance, navigation, and control.
• Design, implement, integrate, and verify real-time software in high-performance environments.
• Collaborate with hardware, software, and systems teams to ensure deterministic execution.
• Support verification, simulation, and flight qualification activities.

Skills

Embedded software development

C/C++

Linux development

Windows development

Communication

Onsite work

I&T integration and test

Flight software engineering

Real-time systems

GNC algorithms

HIL exposure

Python

Education

Bachelor's degree in STEM discipline

Tools

Confluence

JIRA

Bitbucket

Cameo

AADL

Job description

Job Title

Sr. Software Engineer

Location

Huntsville, AL

Salary Range

$120,000 to $164,800 + Bonus Eligible

Security Clearance

Active Secret Clearance Required

Employment Details

This position requires full time onsite in Huntsville, Alabama.

Company Overview

Founded in 2004 with locations in Atlanta, GA and Fort Worth, TX, 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 Senior Software Engineer to support the development of embedded flight software and Guidance, Navigation, and Control (GNC) capabilities for an advanced missile platform. This role offers the opportunity to design and integrate mission-critical software operating in high-performance, real-time environments where precision, reliability, and deterministic execution are paramount. As a Senior Software Engineer, you will develop embedded flight software, contribute to the architecture, design, implementation, integration, and verification of real-time systems supporting missile guidance, navigation, and control functions. You will work at the intersection of software, hardware, and control algorithms to ensure accurate sensor processing, state estimation, trajectory management, and actuator command execution under strict timing and performance constraints. This position requires deep expertise in embedded and real-time software development, including low-level hardware interfaces, multi-threaded and deterministic system design, integration with GNC algorithms, and operation within safety- and mission-critical frameworks. Experience supporting hardware-in-the-loop (HIL) environments, simulation integration, system-level test, and flight qualification activities is highly valued. You will collaborate closely with software engineers, GNC engineers, systems engineers, integration and test teams, and program leadership to mature capabilities from lab development through system qualification and flight test. The successful candidate will join a high-performing software engineering team focused on delivering next-generation missile capabilities. This role requires strong systems thinking, exceptional analytical and troubleshooting skills, and the ability to lead in a fast-paced, high-consequence development environment where performance and reliability are mission critical. 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
• 5+ years of embedded software development
• Experience developing embedded software in C/C++
• Experience with I&T integration and test.
• Experience with Full Lifecycle Software Development
• Experience with (FSW) Flight software engineering
• Proficient with Linux and Windows development environments
• Ability to professionally communicate project status and collaborate on technical solutions with clients and peers
• Active Secret Clearance Required
• Ability to work onsite 100%
• Perform additional job duties as assigned.

Preferred / Additional Skills

• Proficient with Atlassian Tools (Confluence, JIRA, Bitbucket, etc.)
• Proficient in Python development
• Familiarity with Model-Based System Engineering (MBSE) concepts and tools (Cameo, AADL)
• Experience with Digital Simulation Development and integration
• Experience with safety-critical software development and practices (DO-178C)
• Experience with Navigation, Guidance and Control Implementation
• Experience with Signal Processing Implementation
• Experience developing Embedded Flight Software
• 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

Benefits

• 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

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.