About Quartermaster

At Quartermaster AI, we believe the ocean should be a safe and sustainably managed resource for all. By leveraging cutting-edge AI and robotics, we unlock capabilities that were only recently impossible. Our distributed open-ocean systems enable every vessel to sense, compute, and communicate, enhancing maritime domain awareness for those who need it most.

Equal Employment Opportunity (EEO) Statement

Quartermaster AI is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We do not discriminate based on race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, genetic information, or any other protected status under applicable federal, state, or local laws.

We encourage individuals of all backgrounds to apply and join us in shaping the future of defense technology. If you require accommodations during the application or interview process, please let us know.

We are seeking an RF specialist Electrical Engineer to design and develop a custom Software Defined Radio (SDR) subsystem for the Smartmast platform, our edge-deployed maritime sensing system. You will lead the electrical design of our SDR hardware stack, including schematic development, RF layout, PCB fabrication, integration with compute systems, and field validation. This is a hands-on, cross-disciplinary role requiring deep understanding of RF signal chains, mixed-signal design, EMI mitigation, and high-speed digital interfaces.

Key Responsibilities: Design and document the electrical architecture for custom SDR modules, including RF front-end, clocking, ADC/DAC interfaces, and host connectivity Develop schematics and high-frequency PCB layouts optimized for signal integrity, low noise, and compact form factor in marine environments Coordinate with software engineers to validate digital interfaces and ensure clean RF signal paths from antenna to baseband Oversee fabrication and bring-up of SDR prototypes, including power-on testing, gain/loss verification, and calibration Perform lab validation using spectrum analyzers, VNAs, and signal generators to benchmark performance and tune system characteristics Address EMI/EMC considerations and assist in design-for-certification for marine or defense-grade environments Support antenna integration, placement, and impedance matching in close collaboration with mechanical and system engineers Maintain thorough documentation of schematics, BOMs, design iterations, test procedures, and calibration workflows Assist with integration into the larger Smartmast system, including coordination with power, networking, and compute subsystems

Qualifications (Preferred): Bachelor’s or Master’s degree in Electrical Engineering, RF Engineering, or related field 6+ years of experience in RF hardware design, with at least one full SDR or RF subsystem taken from concept to deployment Strong experience with schematic capture and RF-aware PCB layout using tools such as Orcad or Allegro Solid understanding of RF concepts: impedance matching, filter design, shielding, gain stages, and signal conditioning Familiarity with ADCs/DACs, digital interfaces (PCIe, SPI, LVDS), and high-speed layout constraints Hands-on experience with RF lab instrumentation (spectrum analyzers, network analyzers, signal generators, oscilloscopes) Comfort working in cross-functional teams with software, mechanical, and systems engineers Bonus: experience with marine communication bands, direction-finding, or defense-related RF systems. Experience with Jupiter SDR reference design or Ettus USRP platforms

Work Environment: This is a remote position with collaboration via online tools. Flexible working hours with occasional deadlines requiring high availability. Opportunity to work on innovative projects with a global impact.

Benefits: Competitive salary Flexible work hours and the option for remote work. Opportunities for professional development and continued education.