Principal Systems Test Engineer with Security Clearance

Principal Systems Test Engineer Mid-Level / Senior Level | $90,000 - $112,000 | Travel Up to 25% (CONUS & OCONUS) | Active Secret Clearance Required Support the deep space advanced radar capabilities by leading system integration and verification efforts for one of the nation's next-generation deep space radar systems. Join a multidisciplinary engineering team responsible for validating software and hardware performance through formal system acceptance testing, ensuring mission readiness for critical missile defense and space surveillance operations. A Day in the Life - What you'll do

• Develop and execute end-to-end software and system verification testing supporting a deep space advanced radar program.
• Create detailed test plans, step-by-step verification procedures, and formal acceptance test documentation to validate system requirements.
• Perform software testing to verify functionality, performance, and mission readiness across complex radar capabilities.
• Support system integration from subsystem checkout through full system-level testing, assisting with fault detection, fault isolation, and fault recovery activities.
• Analyze test data and engineering results, documenting findings and providing technical input to formal acceptance test reports.
• Collaborate daily with software developers, systems engineers, integration engineers, and customer stakeholders to coordinate testing activities and resolve technical issues.
• Support Agile software development by validating new capabilities throughout the development lifecycle.
• Develop and improve automated testing solutions that increase efficiency, repeatability, and overall test coverage.
• Maintain requirements traceability by documenting verification methods and test results within the program's requirements management system.
• Participate in system test readiness reviews, engineering peer reviews, technical assessments, and integration planning activities.
• Develop system integration plans, procedures, and test scenarios supporting both software and hardware integration events.
• Support domestic and international travel (up to 30%) to participate in integration events, formal testing, and customer demonstrations. Required Qualifications
• Bachelor's degree in a STEM (Science, Technology, Engineering, or Mathematics) discipline from an accredited university.
• Level II: Minimum of 2 years of related systems test, integration, software, or engineering experience.
• Level III: Minimum of 5 years of related systems test, integration, software, or engineering experience.
• Experience developing software requirement verification procedures.
• Experience executing formal verification and validation testing against documented system requirements.
• Experience preparing technical test reports and documenting engineering results.
• Strong written and verbal communication skills supporting technical collaboration across engineering teams.
• Ability to support Agile software development and work within multidisciplinary engineering environments.
• Ability to support up to 25% combined CONUS and OCONUS travel.
• Active in-scope DoD Secret security clearance required at time of application.

Preferred Qualifications

• Experience supporting Integration & Test (I&T) activities across multiple engineering disciplines.
• Hands-on experience supporting missile defense, space surveillance, space tracking, or satellite operations.
• Experience integrating large-scale hardware and software systems supporting mission-critical environments.
• Experience supporting Hardware and Software Integration & Test Checkout (IATC).
• Experience developing Modeling & Simulation (M&S) scenarios supporting verification and operational testing.
• Experience documenting integration plans, procedures, discrepancies, corrective actions, and test results.
• International integration or operational test experience.
• Knowledge of software integration and verification methodologies.
• Experience working within Agile software development environments.
• CompTIA Security+ certification.
• SSCP (Systems Security Certified Practitioner) certification.
• Experience integrating large ground-based data processing systems.
• Experience supporting radar processing algorithms or radar software integration.
• Experience developing software using C++. 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.