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Principal Software Engineer for Integration & Test

STR’s Real-time Architectures, Integration, and Demonstration (RAID) Group develops real-time software and open-architecture integrations for advanced RF sensor systems. We are seeking a Principal Software Engineer to lead technical teams, architect and implement real-time C/C++ software from MATLAB/Python prototypes, drive system integration and hardware-in-the-loop testing, and mentor junior engineers while interfacing with customers and stakeholders.

Skills

  • Advanced C/C++ for high-performance, real-time applications
  • Experience converting prototypes (MATLAB/Python) to production code
  • Strong background in real-time software, latency budgeting, and deterministic behavior
  • Open systems architecture and system-level integration experience
  • Hardware/software integration and HIL testing experience
  • Multithreaded and distributed systems design and performance optimization
  • Clear communication, technical leadership, and mentorship skills
  • Ability to work with customers and stakeholders in defense/national security contexts
  • Active Secret clearance (ability to obtain Top Secret/TS/SCI) and U.S. citizenship

Responsibilities

  • Lead technical teams in architecting, developing, and deploying real-time RF sensor software
  • Translate MATLAB/Python prototypes into optimized production C/C++ code for real-time systems
  • Optimize performance for resource-constrained systems with strict latency and deterministic requirements
  • Design communication infrastructure and data flows for distributed processing systems
  • Lead end-to-end open system integration including hardware-in-the-loop (HIL) testing
  • Conduct design and code reviews, technical risk assessments, and ensure compliance with open architecture standards
  • Mentor and provide technical guidance to junior and mid-level engineers
  • Prepare technical reports, briefings, and present results to sponsors and senior management
  • Interface with customers, program managers, and stakeholders to define technical requirements
  • Lead technical proposal efforts including approach definition, cost estimation, and white paper development
  • Collaborate with algorithm developers, systems engineers, RF hardware engineers, and integration teams
  • Support customer meetings, integration events, and field demonstrations (≈20% travel)

Education

  • BS, MS, or PhD in Computer Science, Computer Engineering, Electrical Engineering, or related field
  • Experience requirements vary by degree (BS +10 years, MS +8 years, PhD +5 years)
  • Relevant professional experience in software development for real-time or sensing applications

Benefits

  • Competitive salary within stated range and comprehensive benefits package (company-provided)
  • Opportunities for career growth, leadership, and mentorship
  • Work on cutting-edge defense, intelligence, and national security technology
  • Collaborative learning environment and recognition of contributions
  • Travel opportunities for integration events and demonstrations (~20%)
  • Equal opportunity employer with reasonable accommodations available
To read the complete job description, please click on the ‘Apply’ button
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Average salary estimate

$245000 / YEARLY (est.)
min
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$206000K
$284000K

If an employer mentions a salary or salary range on their job, we display it as an "Employer Estimate". If a job has no salary data, Rise displays an estimate if available.

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SENIORITY LEVEL REQUIREMENT
TEAM SIZE
SALARY RANGE
$206,000/yr - $284,000/yr
EMPLOYMENT TYPE
Full-time, onsite
DATE POSTED
April 9, 2026
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