RF Hardware Engineer
Read straight from CX2's careers page, verified 25m ago.Seekless can tailor your résumé to it.
Seekless can write your résumé for this posting first.
Before you apply
SalaryNo pay range posted
LocationEl Segundo, CA
Work modeon-site
Typefull-time
SeniorityMid
DepartmentProduct & Engineering
EquityIncluded
Company size5+ people
PostedFeb 3, 2026 · 9mo ago
Verified live25m ago
May no longer be actively hiring
Posted by the company on Feb 3, 2026No pay range listed, though California requires one
At a glanceSummarised by Seekless from the posting.
BS/MS in Electrical Engineering, Computer Engineering, or related field
Experience in designing, testing and building RF Systems (Tx / Rx) for RF signals (ex. communications, RADAR, navigation) UHF through X-Band
Antenna and receiver design across analog/RF/mixed-signal domains: mixers, PLLs/LOs, gain/linearity/noise trades; ability to turn simulations into reality
Channelizers & wideband architectures: filter banks, analog/digital down conversion, sample-rate planning, clocking/synchronization
Willingness to support critical test events that occasionally require extended hours/weekends
Ability to obtain and maintain a security clearance
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)
Digital Signal processing: Design characterize and deliver channelizers, wideband detection/classification, MIMO/digital-arrays, and algorithms in MATLAB/Python/C++
Communication / Waveform system design
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
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
Must be a U.S. Person (see ITAR Regulations below) due to required access to U.S. export-controlled information or facilities
Skills
MATLAB
Python
C++
ADS
AWR
SystemVue
Simulink
NumPy
SciPy
GNU Radio
USRP
RFSoC
VITA-49
Vivado
Quartus
Libero
Benefits
Health insurance
Vision insurance
Dental insurance
Stock options
401(k)
PTO
About the company
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.
About the role
CX2 is seeking a skilled RF Hardware Engineer to join our growing team. The ideal candidate will have experience in designing, testing and building RF Systems (Tx / Rx) for RF signals (ex. communications, RADAR, navigation) UHF through X-Band.
This role requires an onsite presence in our El Segundo, CA HQ; a remote work environment is not considered for this opportunity.
Key Responsibilities
•
Design, validate & deliver RF payload subsystems: Design, Integration and Testing of Antennas, RF front ends, SDRs and provide validation of operation. Support development and analysis of RF performance metrics.
•
Own requirements, ICDs, and verification from concept through delivery
•
Stay current: Track and insert advances in relevant technologies, SDRs, RF Systems, RF machine learning, and PNT.
Qualifications
•
BS/MS in Electrical Engineering, Computer Engineering, or related field
•
Antenna and receiver design across analog/RF/mixed-signal domains: mixers, PLLs/LOs, gain/linearity/noise trades; ability to turn simulations into reality.
•
Channelizers & wideband architectures: filter banks, analog/digital down conversion, sample-rate planning, clocking/synchronization.
•
Willingness to support critical test events that occasionally require extended hours/weekends
•
Ability to obtain and maintain a security clearance
•
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)
•
Digital Signal processing: Design characterize and deliver channelizers, wideband detection/classification, MIMO/digital-arrays, and algorithms in MATLAB/Python/C++
•
Communication / Waveform system design
•
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. Learn more about Security Clearances here.
•
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
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.
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.
Hiring process
*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