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Day 5G Protocol Testing Jobs in Reston, VA (NOW HIRING)

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Cyber Security Engineer II

Woodbridge, VA · On-site

$80 - $120/hr

Lead the testing, troubleshooting, and sustainment of CNO systems to ensure mission readiness ... Strong understanding of networking concepts, protocols, and operational technologies. * Familiarity ...

DeepSig, Inc

RAN Test Engineer

Arlington, VA · On-site

Perform conformance testing to verify compliance with O-RAN and 3GPP standards. * Conduct ... Familiarity with 4G/5G RAN concepts and 3GPP standards. * Proficiency with Python and shell ...

Socket.dev

RAN Test Engineer

Arlington, VA · On-site

$90 - $130/hr

Perform conformance testing to verify compliance with O-RAN and 3GPP standards. * Conduct ... Familiarity with 4G/5G RAN concepts and 3GPP standards. * Proficiency with Python and shell ...

DeepSig Inc

RAN Test Engineer

Arlington, VA · Hybrid

Perform conformance testing to verify compliance with O-RAN and 3GPP standards. * Conduct ... Familiarity with 4G/5G RAN concepts and 3GPP standards. * Proficiency with Python and shell ...

Capital One

Compliance Tester II

Mclean, VA · On-site

... test plans, testing protocols and leveraging job aids as needed. * Supporting and initiating ... This role is expected to accept applications for a minimum of 5 business days. No agencies please.

Cape

Wireless Network Architect

Arlington, VA · On-site

$74.50 - $99.75/hr

... day. The Role Cape is seeking a Wireless Network Architect who combines deep expertise in planning ... Familiarity with 4G, 5G NSA, and 5G SA architectures. * Strong protocol knowledge: Diameter, SIP ...

Lynk

Wireless Engineer - Satellite

Chantilly, VA · On-site

This role involves developing, implementing, and testing DSP and satellite communication protocols ... Knowledge of the 3GPP standards, including LTE and 5G PHY, MAC, and RRC specifications is a plus.

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As of Aug 22, 2026, the average hourly pay for day 5g protocol testing in Reston, VA is $26.35, according to ZipRecruiter salary data. Most workers in this role earn between $21.01 and $29.76 per hour, depending on experience, location, and employer.

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Infographic showing various Day 5G Protocol Testing job openings in Reston, VA as of August 2026, with employment types broken down into 1% As Needed, 70% Full Time, 24% Part Time, and 5% Contract. Highlights an 94% Physical, 2% Hybrid, and 4% Remote job distribution, with an average salary of $54,814 per year, or $26.4 per hour.

Senior Principal FPGA & Digital Signals Processing Engineer

Research Innovations

Alexandria, VA

$139K - $178K/yr

Full-time

Medical, Retirement, PTO

Posted 8 days ago

Job description

Position Title: Senior Principal Field Programmable Gate Array & Digital Signal Processing Engineer

Location: Hybrid, in office in Alexandria, VA

Clearance Requirement: TS/SCI

Employment Type: Full Time

Research Innovations, Inc. (RII) is breaking through the big, slow status quo with transformative technology that fundamentally improves the world. We build advanced software solutions for government and military missions, applying agile development and user-centered design to solve complex, mission-critical problems.

Dragonfly is redefining tactical SIGINT and Electronic Warfare by combining advanced RF sensing, GPU-accelerated processing, artificial intelligence, and high-performance FPGA architectures into a portable, mission-ready platform. As the Principal FPGA & DSP Engineer, you will serve as the technical leader responsible for designing and delivering the next generation of real-time FPGA-based signal processing capabilities that enable rapid spectrum awareness, signal exploitation, and electronic warfare operations. Working closely with hardware, software, AI, and RF engineering teams, you will architect high-performance firmware solutions that transform advanced algorithms into deployable capabilities supporting the Department of Defense, Intelligence Community, and allied mission partners.

WHAT YOU WILL BE DOING

  • Lead the FPGA firmware architecture for Dragonfly, defining the optimal partitioning of signal processing across FPGA, GPU, and CPU to meet mission latency, throughput, and SWaP requirements.

  • Migrate GPU-based digital signal processing algorithms into efficient FPGA implementations, including floating-to-fixed point conversion, quantization analysis, word-length optimization, and bit-accurate verification.

  • Design reusable, portable FPGA IP that supports multiple AMD/Xilinx platforms including RFSoC, Versal, UltraScale+, and Zynq.

  • Develop real-time FPGA implementations for advanced RF signal processing including digital down conversion, filtering, FFTs, channelization, synchronization, demodulation, and protocol exploitation.

  • Implement and optimize wireless protocol processing for technologies such as Wi-Fi, Bluetooth/BLE, LoRa, LTE, and 5G NR.

  • Develop FPGA capabilities supporting direction finding (DF), beamforming, geolocation, and multi-channel phase-coherent signal processing.

  • Establish FPGA verification methodologies including simulation, automated regression testing, timing closure, hardware validation, and over-the-air testing.

  • Support hardware bring-up, integration, production validation, and field testing of Dragonfly systems.

  • Serve as the technical authority for FPGA firmware and DSP architecture, conducting design reviews, mentoring engineers, and establishing engineering best practices.

  • Contribute to product roadmap development, customer engagements, technical proposals, IRAD efforts, and emerging EW/SIGINT capability development.

WHAT YOU HAVE DONE

  • Bachelor's degree in Electrical Engineering, Computer Engineering, Computer Science, or related field; Master's or PhD preferred.

  • 10+ years of FPGA development experience supporting RF, SDR, SIGINT, radar, wireless communications, or Electronic Warfare systems.

  • Demonstrated ownership of FPGA architecture from concept through deployed production systems.

  • Active Secret clearance required; ability to obtain or maintain TS/SCI preferred.

  • Expert proficiency with VHDL and/or SystemVerilog, RTL design, pipelining, finite state machines, clock domain crossing, and timing closure.

  • Extensive experience with AMD/Xilinx development tools including Vivado, Vitis, Vitis HLS, and RFSoC or Versal platforms.

  • Strong background in digital signal processing including FFTs, digital down/up conversion, FIR/IIR/CIC filters, multirate processing, fixed-point design, CORDIC, and AGC.

  • Experience implementing high-speed interfaces including AXI, PCIe, Ethernet, DDR memory, Aurora, and JESD204B/C.

  • Proficiency with MATLAB and/or Python for algorithm development and hardware verification, along with C/C++ development in Linux environments.

  • Experience with FPGA simulation, debugging, board bring-up, and RF laboratory validation using industry-standard tools.

  • Familiarity with Git, Agile development methodologies, and cross-functional hardware/software engineering teams.

EVEN BETTER

  • Experience developing CUDA or GPU-based DSP algorithms and migrating them to FPGA implementations.

  • Experience implementing beamforming, direction finding, geolocation, MUSIC/ESPRIT, TDOA, or FDOA algorithms.

  • Knowledge of LTE, 5G NR, Wi-Fi, Bluetooth/BLE, LoRa, or other modern communications waveforms.

  • Experience with High-Level Synthesis (HLS), Simulink, MATLAB HDL Coder, or Model Composer.

  • Familiarity with RFNoC, GNU Radio, OpenCPI, SOSA, or CMOSS architectures.

#LI-TC1

At RII, we believe that diversity in our workforce is critical to our success. We strive to hire great people from a wide variety of backgrounds, not just because it's the right thing to do, but because it makes us stronger. We work to help your intellectual passions and creativity thrive. It's one of our core values: Let your geek flag fly.
 
We also offer all employees comprehensive benefits including: flexible work schedules, health insurance coverage, paid time off, 401k with a company match, paid parental leave, access to wellness programs and much more. You get this all from day one, and all paid for by RII.
 
It's all part of another of our core values: Stay human. It's why our comfortable and colorful offices such as our headquarters, include a community game room, pantry, massage chair, and an escape room, among other amenities. It's why we have community ambassadors and regular community events.
 
Research Innovations Incorporated is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or any other characteristic protected by applicable law.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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