Senior CUDA C++ Software Engineer

Position: Senior CUDA|C++ Software Engineer

Location: Arlington, VA

Clearance: TS/SCI

Grey Matters Defense Solutions LLC is a specialized firm in software development, data analytics, and advanced remote sensing technologies serving defense and intelligence sectors.

The Senior CUDA/C++ Software Engineer designs, develops, and optimizes high-performance GPU‑accelerated software solutions supporting advanced signal processing, RF exploitation, and SIGINT mission applications. This position focuses on building scalable, production‑quality software using C++, CUDA, and NVIDIA GPU technologies to process large volumes of data in real‑time or near‑real‑time environments.

The ideal candidate possesses deep expertise in modern C++ development, GPU architecture, CUDA optimization, and high-performance computing (HPC). Experience with DSP, RF signal processing, and SIGINT applications is highly desirable.

• 8+ years of professional software engineering experience.
• 5+ years of experience developing high-performance applications in C++.
• 3+ years of hands‑on CUDA development experience in production environments.
• Experience optimizing applications for throughput, latency, memory utilization, and scalability.
• Experience developing software on Linux platforms.

Design, develop, and maintain GPU-accelerated applications using CUDA and modern C++.

Develop custom CUDA kernels optimized for performance, scalability, and maintainability.

Implement efficient memory management strategies utilizing shared memory, pinned memory, unified memory, and asynchronous transfers.

Optimize GPU utilization through concurrency, streams, kernel fusion, and multi‑GPU processing techniques.

Integrate GPU-accelerated capabilities into larger software systems and mission applications.

Analyze and optimize application performance across CPU and GPU architectures.

Profile applications using NVIDIA Nsight and related performance analysis tools.

Identify and resolve bottlenecks related to memory bandwidth, kernel execution, synchronization, and data movement.

Develop benchmark frameworks and performance regression testing capabilities.

Develop clean, maintainable, and well-documented code using modern C++ standards.

Participate in software architecture, design reviews, and code reviews.

Build automated unit, integration, and performance testing frameworks.

Support CI/CD pipelines and automated build environments.

Collaborate with cross‑functional engineering teams to deliver mission‑critical software capabilities.

Bachelor's degree or higher in Computer Science, Computer Engineering, Electrical Engineering, Applied Mathematics, Physics, or a related STEM discipline.

• C++17/20
• CUDA
• Python
• Linux Development
• Git
• CUDA Kernel Development
• NVIDIA GPU Architecture
• CUDA Streams and Concurrency
• Memory Optimization
• Multi‑GPU Processing
• Nsight Profiling
• cuFFT
• cuBLAS
• Object-Oriented Design
• Design Patterns
• Unit Testing
• CI/CD
• Performance Benchmarking
• Software Architecture
• Digital Signal Processing
• RF Systems
• IQ Data Processing
• SIGINT Applications
• High-Performance Computing

$140,000 – $190,000 + additional 25% of salary into SEP and 25% into IBA.

• 25% (of salary) employer contribution distributed monthly to your SEP IRA.
• Individual Benefit Account 25% (of salary) to pay for medical insurance premiums and funded time off.
• Employee assistance program.
• Employee discount.
• Health savings account.
• Referral program.

All qualified applicants will receive consideration for employment regardless of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

Grey Matters Defense Solutions LLC participates in E-Verify. Federal law requires all employers to verify the identity and employment eligibility of all persons hired to work in the United States.

Grey Matters Defense Solutions LLC complies with the Colorado Artificial Intelligence Act (CAIA) and maintains policies, controls, and oversight practices designed to mitigate algorithmic discrimination, promote transparency, and ensure responsible use of AI systems in accordance with Colorado law.