RF Hardware Engineer
cx2
El Segundo, CA
Posted Feb 3, 2026
- Full-time
Job description
CX2 is a next-generation defense technology company founded to deliver spectrum dominance for the United States and our allies. CX2’s AI-enabled hardware and software platforms detect, disrupt and defend the electromagnetic spectrum across land, air, sea and space domains. 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](https://www.state.gov/security-clearance-faqs). - 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](https://www.pmddtc.state.gov/?id=ddtc_kb_article_page&sys_id=24d528fddbfc930044f9ff621f961987).