Principal Radio Frequency Engineer

The role

You will lead technical planning, architectural design, and software execution for advanced DSP/SDR systems. You will provide subject matter expertise and technical mentorship to solve challenges in communications, signal collection, and electronic warfare.

What you will do

• Lead technical planning, architectural design, and software execution for advanced DSP/SDR systems.
• Provide subject matter expertise and technical mentorship to cross-functional engineering staff.
• Reverse engineer complex COTS devices and RF protocols.
• Isolate PRN codes and synthesize custom RF waveforms.
• Guide lab build-outs and define software toolchains.
• Select SDR platforms and validate signals using laboratory RF test equipment.
• Contribute to project scheduling, budget preparation, and business development efforts.

Required qualifications

• Active DoD Top Secret clearance with SCI eligibility.
• Bachelor’s degree in Electrical Engineering, Computer Engineering, Computer Science, Physics, Mathematics or equivalent military/IC experience.
• 9+ years of experience in DSP, SDR development, and RF reverse engineering.
• Proven capability to serve as a technical lead.
• Experience mentoring engineering staff and guiding project deliverables.
• Experience contributing to technical sections of proposal efforts.
• Experience reverse engineering complex RF protocols and COTS devices.
• Experience deriving transmission parameters, generating custom waveforms, and decoding Pseudo-Random Noise (PRN) codes.
• Extensive hands-on experience implementing custom SDR solutions on COTS platforms in Linux environments.
• Experience executing baseline modulation schemes (FSK, PSK, QAM).
• Experience performing RF test equipment validation.

Nice to have

• Familiarity with space-based system signal structures (e.g., GPS L1/L2, GNSS, SATCOM).
• Familiarity with space-dominant modulations (QBPSK, BOC).
• Familiarity with satellite simulation software (e.g., AGI STK) for Doppler shift mitigation.
• Practical experience using reverse engineering tools such as Ghidra for firmware reverse engineering.
• Deep understanding of digital communication concepts, including Forward Error Correction (FEC), Viterbi and Reed-Solomon decoding, interleaving, and framing analysis.
• Prior experience authoring technical white papers, presenting at technical panels, or supporting proposal capture efforts within SIGINT or Electronic Warfare domains.

Benefits

• medical, dental, and vision insurance
• life and disability insurance
• retirement benefits
• paid leave
• tuition assistance
• professional development

Before you apply

• Active DoD Top Secret clearance with SCI eligibility required.

About the company

Two Six Technologies builds, deploys, and implements innovative products that solve complex challenges. They support customers in building a safer global future through collaboration and trust.