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Software Engineer III Mid-Senior Level | $90,000 - $110,000 | Huntsville, AL | Active Secret Clearance Required Build the software that evaluates and manages real-time missile defense threat environments-supporting ground fire control systems that protect the United States. A Day in the Life - What you'll do * Design, implement, and test complex software capabilities and algorithms supporting the ground weapons system and ground fire control product. * Develop and maintain software that evaluates and manages threat scenes within the U.S. Missile Defense System. * Implement mathematics and physics-based solutions that directly support Missile Defense Agency (MDA) mission capabilities. * Contribute to a large-scale codebase (~1.5 million lines) supporting mission-critical missile defense operations. * Collaborate with multi-disciplinary engineering teams across varying experience levels in a high-performance development environment. * Support testing, integration, and validation of new software capabilities. * Participate in discussions, technical reviews, and engineering briefings supporting mission development and deployment. * Support occasional travel (up to 10%) to meet program and mission requirements. Required Qualifications * Bachelor's degree in a STEM (Science, Technology, Engineering, or Mathematics) discipline from an accredited university. * 5 years of related software engineering experience with a Bachelor's degree or 3 years of related experience with a Master's degree or 1 year of related experience with a PhD * Recent experience developing software in C++, Java, or Ada * Willingness to become proficient in Ada software development * Strong communication skills for technical collaboration and documentation * Ability to think critically and translate concepts into work products, technical discussions, and presentations * Ability to work both independently and in a collaborative engineering team environment * Ability to work within a closed-area / in-person development environment * Ability to travel up to 10% to support mission needs * Active in-scope DoD Secret security clearance required at time of application Preferred Qualifications * Extensive experience with Linux operating systems and scripting * Experience with MATLAB and Python * Experience supporting large-scale missile defense systems * Advanced degree or strong academic background in Mathematics or Physics * Experience supporting Battle Management or Fire Control systems * Experience with Agile development tools such as Jira and Confluence * Experience with DevSecOps and CI/CD tools including Jenkins, Ansible, Git, and GitLab Who is Caribou Thunder? Caribou Thunder is a HUBZone-certified small business providing advanced technical and engineering services to the U.S. Department of War and its mission partners. 35+ states and 20+ countries. We've delivered trusted solutions for over two decades - strengthening national readiness across missions on land, undersea, in the air, and throughout LEO, MEO, GEO, and deep space. Why Caribou Thunder? TEAM THUNDER - Mission Focused. Delivery Proven. Ready to Serve. Employee Advocacy Mission Proven Global Reach Skilled Teams Modern Tools Empowering Culture Our engineers and innovators ensure capability from sea floor to space frontier - delivering on time, maintaining compliance, and performing with precision in high-consequence environments. We specialize in Engineering Services, Cybersecurity, Software Development, Modeling & Simulation, Digital Engineering, and Artificial Intelligence - disciplines powering the nation's most complex technical missions. Employee Advocacy + Benefits Our people are the heart of Caribou Thunder. We invest in their growth, flexibility, and well-being - knowing their success drives ours. Benefits include: Premium Health, Dental & Vision Insurance 401(k) with 6% Company Match Flexible PTO & Work Schedule Education & Certification Reimbursement Support for Military Leave Work-Life Balance & Traditional Family Values Your future, your flexibility, your well-being - we invest in you. Apply and let's connect.