Radio Frequency Engineer, Berkeley

Job Description

Job Description

Company Overview: Oleo is an early-stage biomanufacturing company developing a platform to produce carbon-negative oil feedstocks for advanced fuel production. Our technology combines microwave hydrolysis and microbial fermentation to convert biomass waste into oil feedstocks, addressing a $21B market. Oleo's platform reduces cost exposure and improves supply chain stability for energy producers, with a targeted ~22% cost reduction compared to incumbent seed oils. This technology was developed by Oleo's founders at Stanford University and is in the process of being scaled to the 300L setting at Lawrence Berkeley National Laboratory. Oleo is supported by Activate, DOE Leep @ Cyclotron Road, and BEAM Circular, and has received investment from Gener8tor, Safar Partners, Alpine Social Ventures, Collab Fund, and G-Force.Role Description: As the RF Engineer, you will lead the electromagnetic design and integration of a custom industrial microwave reactor. Your core responsibility will be developing the design principles and RF architecture required to achieve uniform, homogeneous heating throughout a custom microwave applicator operating at industrial scale, including optimal geometry.You will work cross-functionally with mechanical and process engineers to ensure the system delivers reliable, scalable, and safe performance. Primary Responsibilities of this Role Include: Design and model high-power microwave applicator systems for uniform volumetric heating

Develop RF design principles to ensure homogeneous field distribution within a biomass slurry reactor

Perform electromagnetic simulations (e.g., HFSS, CST, COMSOL) to optimize cavity geometry and waveguide coupling

Define specifications for and integrate off-the-shelf microwave generators, magnetrons or solid-state sources, circulators, and waveguides

Design impedance matching and power distribution strategies

Minimize hot spots, standing waves, and field non-uniformities

Define power requirements and scale-up architecture to support 600 kg/hr throughput

Collaborate with mechanical engineers on applicator design, materials selection, and thermal management

Support commissioning, testing, and troubleshooting of the full-scale system

Establish RF safety and shielding protocols

As the Ideal Candidate, You Would Bring: MS, or PhD in Electrical Engineering, RF Engineering, or related field

5+ years experience in RF, microwave, or high-frequency power systems (industrial microwave experience strongly preferred)

Experience with high-power microwave systems (kW–100s kW range preferred)

Proficiency in EM simulation tools (HFSS, CST, COMSOL, or similar)

Strong understanding of waveguides, impedance matching, cavity design, and power coupling

Experience integrating commercial microwave generators and RF components

Hands-on experience with testing, tuning, and troubleshooting RF systems

What We Offer: Annual salary of $110,000 with potential for expanded responsibilities and corresponding compensation growth as the company advances through the seed stage.

Company equity.

Healthcare and dental insurance.

Competitive PTO.

Unfortunately at this time, we are unable to sponsor visas.

We are focused on building a diverse and inclusive workforce. If you're excited about this role, but do not meet 100% of the qualifications listed above, we encourage you to apply. Start date:

July 7, 2026