Senior Real-Time Embedded RF Software Architect

CACI International Inc; Herndon (VA); On-site; USD 113,000 - 238,000; Full time

Job summary

CACI International Inc in Herndon, VA is seeking a Senior Embedded Software Engineer to design, implement, and optimize complex embedded RF systems within a multi-disciplinary team. You will own technical design from architecture to production, develop high-performance C++ frameworks, and collaborate across signal processing, FPGA, and hardware interfaces to meet real-time and resource constraints.

This role emphasizes modern DevOps practices, documentation, and rigorous testing to ensure

Qualifications

• 7+ years of professional software engineering experience in embedded systems and/or high-performance computing in Linux based environments.
• BS or MS in Computer Science, Software Engineering, Electrical or Computer Engineering, or related field
• Strong proficiency in C++ development for embedded real-time systems, including concurrency, memory management, and optimization techniques

Responsibilities

• Design distributed software architectures spanning multiple processing domains (x86, ARM, FPGA fabric), defining communication patterns and data flows for real-time RF signal processing systems
• Develop high-performance C++ frameworks for inter-processor communication in systems where latency and throughput are critical constraints
• Create technical documentation including message sequence charts, UML class diagrams, and software architecture specifications that enable distributed teams to build complex systems correctly and efficiently
• Design microservice architectures for x86 and ARM platforms, balancing modularity, performance, and resource constraints
• Profile and optimize software for memory-bound and compute-bound workloads using tools like vTune, identifying bottlenecks and implementing measurable performance improvements
• Work with signal processing engineers to design data pipelines that move RF samples from ADCs through filters, demodulators, and decoders
• Develop debugging approaches for resource-constrained embedded systems where standard tools provide limited visibility
• Build C++/Python test harnesses and unit tests that generate representative workloads, validate system behavior, and verify edge cases
• Integrate modern development tools and practices including CI/CD pipelines, containerization, and build automation
• Collaborate with FPGA engineers to define hardware/software interfaces that leverage programmable logic capabilities while maintaining software flexibility

Skills

C++

Embedded systems

Real-time programming

Multi-threading

Linux

Performance optimization

CI/CD

Education

Bachelor's or Master's in CS/SE/EE

Tools

Conan

Docker

GitLab

vTune

perf

gdb

Valgrind

Job description

CACI International Inc in Herndon, VA is seeking a Senior Embedded Software Engineer to design, implement, and optimize complex embedded RF systems within a multi-disciplinary team. You will own technical design from architecture to production, develop high-performance C++ frameworks, and collaborate across signal processing, FPGA, and hardware interfaces to meet real-time and resource constraints.

This role emphasizes modern DevOps practices, documentation, and rigorous testing to ensure