Signal Processing Engineer

CX2 is a next-generation defense technology company securing spectrum dominance for the United States and its allies. CX2 builds AI-enabled hardware and software platforms to detect, disrupt, and defend the electromagnetic spectrum across land, air, sea, and space. Headquartered in El Segundo, California, CX2 develops technology designed to give warfighters the ability to see, understand, and act across the invisible battlefield.
CX2 is seeking a highly skilled Signal Processing Engineer to join our growing team. The ideal candidate has solid fundamentals in design, implementation and testing of signal processing techniques using MATLAB, Python and other existing frameworks. Experience in Defense is preferred. This role requires an onsite presence in our El Segundo, CA HQ; a remote work environment is not considered for this opportunity.

Key Responsibilities

Digital Signal processing: Design, characterize, and deliver algorithms such as channelizers, frequency agile detection, adaptive filters, MIMO, wideband detectors, and other algorithms related to signal sorting

Write and contribute to existing code repositories (C/C++, Python, MATLAB) for analysis and real-time processing systems targeting embedded CPUs/GPUs (experience with FPGAs a big plus)

Own requirements, ICDs, and verification from concept through delivery

Stay current: Track and insert advances in signal processing techniques and associated technologies, adaptive beamforming, RF machine learning, and resilient PNT for GPS-denied ops.

Required Qualifications

Masters Degree in Electrical, Computer or Systems Engineering or related field with Graduate study emphasis in Signal Processing; OR a Bachelor’s Degree in an Engineering discipline with 3-5 years relevant working Signal Processing Experience

Strong digital signal processing fundamentals, with hands-on experience implementing and deploying DSP algorithms in software-defined radio systems on embedded processors, GPUs, and FPGAs.

Understanding of design and implementation of wireless communications algorithms, including modulation and demodulation techniques (e.g. QAM and OFDM) and signal detection and classification techniques

Ability to contribute to production codebases in C/C++, Python, and MATLAB for algorithm development, analysis, and real-time signal processing

Familiar with multi-rate signal processing, polyphase filters, channelizers, beamforming, phase coherent systems, and wireless performance metrics (e.g. SNR, receiver sensitivity, SFDR, I/Q imbalance, DC offset)

Strong proficiency with Linux development workflows, Git-based version control, and comfortable at the command-line

Willingness to support critical test events that occasionally require extended hours/weekends.

Ability to obtain and maintain a security clearance. Learn more about Security Clearances here.

Must be a U.S. Person (see ITAR Regulations below) due to required access to U.S. export-controlled information or facilities

Bonus Points

PhD in Electrical Engineering, Computer Engineering, or related field

5+ years’ experience with EW subsystems and payloads.

EA/ECM technique design (deception, Digital RF Memory, coherent/non-coherent techniques).

Comms system design (LPI/LPD, Waveform-of-Interest exploitation)

RF machine learning for emitter ID, modulation/classification, anomaly detection, PDW creation

Tools Experience: ADS/AWR/SystemVue, MATLAB/Simulink, Python (NumPy/SciPy), GNU Radio/SDR (USRP/RFSoC), VITA-49; HDL/firmware experience also helpful (Vivado/Quartus/Libero).

Clearance: Active Secret or ability to obtain and maintain; TS/SCI eligibility preferred. ITAR/EAR-controlled work.

Field work: supporting periodic travel for flight tests and customer demonstrations/support

Mindset: Builder-tester who loves first-principles RF, rapid lab iteration, and getting hardware flying fast.

ITAR Regulations

To conform to U.S. Government export regulations, applicant must be a US Citizen, Green Card holder, or be eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here. 

What We Offer

Competitive salary, stock options and benefits, including health, vision and dental.

401K enrollment at 90 days.

Generous PTO + most Federal Holidays observed.

Collaborative and inclusive work environment.

Access to the latest tools and technologies.

High levels of responsibility and autonomy.

Professional growth and development opportunities.

Access to the hardest problems in electronic warfare.

*Please note our interview process concludes with in-person interview and whiteboarding exercise (required). 
CX2 is a next-generation defense technology company securing spectrum dominance for the United States and its allies. We build AI-enabled hardware and software platforms to detect, disrupt, and defend the electromagnetic spectrum across land, air, sea, and space. Our systems are deployed in the most contested operational environments in the world. We’re backed by leading venture investors in the defense ecosystem and led by founders with track records at Meta, SpaceX, Epirus, and the U.S. Department of Defense. Equal Opportunity Employer CX2 is committed to equal employment opportunity. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender identity, sexual orientation, national origin, disability, veteran status, or any other protected characteristic under federal, state, or local law, including those with a criminal history, in compliance with the CA Fair Chance Initiative for Hiring Ordinance. To view CX2's privacy policy, please visit: https://www.cx2.com/privacy