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We are currently hiring two full-time positions in San Diego, CA.

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Microfabrication Engineer

San Diego, CA · On-site · Full-time

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RF / Electronics Engineer

San Diego, CA · On-site · Full-time

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01

Microfabrication Engineer

San Diego, CA · On-site · Full-time

The role

We're hiring a Microfabrication Engineer to develop and run the cleanroom processes behind our sensor chips. This spans diamond and fused-silica nanofabrication for improved photon collection and sensor performance. You'll design process flows, run them on the cleanroom, characterize the results, and iterate with the engineering team.

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What you'll do
  • Develop diamond nanofabrication process flows, including etched pillars, tapered structures, and surface features that improve photon collection and NV coupling.
  • Design and etch microstructure in fused silica and diamond, and develop robust wafer/chip bonding and sealing.
  • Own the full process chain: lithography, thin-film deposition, dry etching, wet processing, dicing, and cleaning, including recipe development and optimization.
  • Characterize fabricated devices (SEM, profilometry, optical microscopy) and close the loop between process parameters and device performance.
  • Prepare and run process flows at UCSD Nano3 and external cleanroom facilities, including writing user proposals and coordinating tool access.
  • Explore integrated approaches to sample delivery and their fabrication requirements.
Required qualifications
  • BS/MS/PhD in Materials Science, Physics, EE, Chemical Engineering, or equivalent, with hands-on cleanroom experience.
  • Direct experience with core microfabrication processes: photolithography, dry etching (especially ICP-RIE), thin-film deposition, and metrology.
  • Demonstrated ability to develop and optimize a process flow.
  • Comfort with device characterization tools (SEM, profilometry) and careful, well-documented experimental work.
02

RF / Electronics Engineer

San Diego, CA · On-site · Full-time

The role

We're hiring an RF/Electronics Engineer to lead the mixed-signal and microwave hardware behind our quantum control and readout chain — microwave delivery, low-noise photodetection, precision magnetic biasing, and tight timing. You'll be responsible for the boards and signal chains that make coherent spin control and sensitive readout work in a small form factor.

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What you'll do
  • Design and bring up microwave delivery hardware for NV spin control: microwave sources, IQ modulation, amplifier chains, and on-chip antenna structures.
  • Design low-noise analog front ends, including amplifiers and filtering/gain stages.
  • Build precision current drivers for bias coils and the DAC/ADC infrastructure around them.
  • Design multilayer PCB layouts for mixed-signal boards where RF, sensitive analog, and digital control coexist — stackup design, grounding, shielding, and EMI discipline.
  • Work hand-in-hand with our FPGA/firmware work.
  • Characterize boards on the bench (VNA, spectrum analyzer, scope).
Required qualifications
  • BS/MS in Electrical Engineering, Physics, or equivalent, with 3+ years of hands-on hardware design.
  • Demonstrated experience designing and debugging RF or microwave circuits, including impedance matching and S-parameter measurement.
  • Strong analog design skills: low-noise amplification, TIAs, precision references, and an intuition for noise budgets.
  • Multilayer PCB design experience (we use KiCad) for mixed-signal systems, including controlled-impedance routing.
  • Comfort on the bench: VNA, spectrum analyzer, oscilloscope, and systematic debugging of a full signal chain.