Back to search:Sr Software / Tucson, Az
Senior Software Developer - Mission-Critical R&D (TS/SCI Required)
Tucson, AZ (Onsite)
$160,000 - $260,000 Base + Stock + Full Benefits + Paid Relocation
U.S. Citizenship + Active TS/SCI Clearance Required
This Is Not Just Another Software Role.
This is your opportunity to build real-world systems that directly impact national security-not theoretical work, not maintenance... true innovation deployed in the field.
You'll join a highly elite, multidisciplinary R&D team of engineers, mathematicians, and scientists designing advanced geolocation and digital communications systems used in mission-critical environments.
If you're driven by solving complex, unsolved problems and want to see your work actively used in real-world operations, this is where you belong.
What Makes This Role Different
  • End-to-End Ownership - Design → Build → Test → Deploy → Operate
  • Deep Technical Work - Algorithms, architecture, and real-world data
  • True R&D Environment - Not product maintenance or incremental updates
  • Mission Impact - Your work directly supports national defense
  • Constant Innovation - Freedom to propose, experiment, and implement
What You'll Be Doing
  • Architect and develop high-performance, scalable software systems
  • Build and deploy advanced geolocation algorithms
  • Integrate complex systems with real-world operational environments
  • Collaborate across engineering, systems, and deployment teams
  • Mentor engineers and influence technical direction and innovation
  • Work across the full lifecycle: design, development, integration, testing, deployment, and O&M
What You Bring (Must-Have)
  • 15+ years in software engineering (senior/architect level)
  • Deep expertise in:
    • Data structures, algorithms, and system design
    • API development and distributed systems
    • Modern software engineering practices
  • Strong experience with:
    • Golang (highly preferred)
    • C++, Python (engineering/scientific environments)
    • Linux-based development
  • Proven ability to design scalable, high-performance architectures
  • Bachelor's in Computer Science/Engineering (MS/PhD preferred)
  • ✓ Active TS/SCI Clearance
  • ✓ U.S. Citizenship
Preferred (Stand-Out Candidates)
  • Cloud + DevOps: AWS, Docker, Kubernetes, CI/CD
  • JavaScript frameworks (React, Vue)
  • Experience in scientific or mission-critical systems
  • Technical leadership + mentoring experience
  • Passion for building enterprise-level internal platforms
Why Top Engineers Say Yes
  • Work on problems most engineers never get access to
  • Blend of research + hands-on engineering
  • Complex challenges that require real thinking-not repetitive coding
  • High compensation + full relocation support
  • Direct visibility of your work in real-world applications
Who This Role Is For
This is for engineers who:
  • Get bored with routine development
  • Want to own and build systems from the ground up
  • Thrive in high-autonomy, high-expectation environments
  • Want their work to matter beyond code

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