Job Title: Senior Software Engineer
Location: Huntsville, AL
Salary Range: $123,600 - $164,800 + Bonus Eligible
Security Clearance: Active Secret Clearance Required
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
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
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.
Skills Required
- Bachelor's degree in a STEM discipline
- 5+ years of embedded software development experience
- Experience developing embedded software in C/C++
- Experience with integration and test
- Experience with full lifecycle software development
- Experience with flight software engineering
- Proficiency with Linux and Windows development environments
- Professional communication and collaboration skills
- Active Secret clearance
- Ability to work onsite 100% in Huntsville, Alabama
- Proficiency with Atlassian tools, including Confluence, JIRA, and Bitbucket
- Proficiency in Python development
- Familiarity with MBSE concepts and tools, including Cameo and AADL
- Experience with digital simulation development and integration
- Experience with safety-critical software development and DO-178C practices
- Experience implementing navigation, guidance, and control
- Experience implementing signal processing
- Experience developing embedded flight software
- Experience communicating and documenting complex technical designs
- Collaborative, team-based working ability
- Excellent written, verbal, and presentation skills
What We Do
For over thirty years, Lynx Software Technologies has helped customers with some of the most demanding, mission critical, system requirements to create, certify, and deploy equipment, above, on and below the surface of the earth.. Lynx for the Internet of Things (IoT): As billions of ‘things’ are connected to the internet, a new paradigm of security is required. Lynx offers real-time military-grade security products to protect the edge, the gateway and cloud devices while protecting any sensitive data as it traverses the IoT. Key Markets: Automotive, Industrial, Factory Automation, Medical and Transportation. Our LYNX MOSA.ic software framework and LynxSecure separation kernel hypervisor provide a secure foundation for this new generation of connected platforms. Lynx for Enterprise Cyber Security: To fight modern day malicious threats, security needs to be built-in rather than implemented as an afterthought. Lynx offers isolation technology that can be implemented in endpoint and cloud deployments to separate and protect critical enterprise infrastructure. This isolation technology separates sensitive information from the key attack points and denies infiltration and exfiltration attempts. Lynx for Aerospace & Defense: Lynx provides certified avionics RTOS solutions based on open standards such as POSIX, ARINC and FACE that allow reusability of certified code and systems. The FAA Reusable Software Component (RSC) has been issued to LynxOS-178. The LynxOS 7.0 RTOS and LynxSecure separation kernel technologies were designed to provide the highest levels of security without compromising performance and real-time determinism.
