Senior Electrical Engineer - Mixed-Signal & Digital Systems

Senior Electrical Engineer - Mixed-Signal & Digital Systems

Location: Santa Clara, CA

Primarily onsite with occasional remote flexibility

Role Summary:

We're hiring a Senior Electrical Engineer - Mixed-Signal & Digital Systems to help design and deliver the next generation of cavity ring-down spectroscopy (CRDS) instruments. In this role, you will architect and implement high-performance mixed-signal electronics, applying best practices in grounding, shielding, and signal integrity. Your work will directly influence the precision, stability, and scalability of systems used worldwide in environmental, industrial, and scientific applications.

Key Responsibilities:

• Design and validate mixed-signal circuits and PCBs for high-precision instrumentation
• Apply best practices in layout, grounding, shielding, and impedance control to minimize noise and interference
• Collaborate closely with optical, analog, and mechanical engineers to integrate electronics into complex systems
• Maintain and extend FPGA firmware and embedded control code in partnership with consultant architects
• Perform schematic capture and PCB layout in Altium (or equivalent) and run mixed-signal simulations in SPICE or similar tools
• Debug and validate designs in the lab using oscilloscopes, logic analyzers, VNAs, and other instrumentation
• Document designs, maintain revision control, and contribute to shared engineering standards

Qualifications:

• BS/MS in Electrical Engineering or related field
• 10+ years in mixed-signal circuit and PCB design for high-performance systems
• Proficiency in schematic capture and PCB layout tools (Altium preferred)
• Experience with mixed-signal simulation (SPICE or equivalent)
• Strong grounding, shielding, and signal integrity practices for noise-sensitive systems
• Proficiency in FPGA firmware (VHDL/Verilog) and embedded code (C/C++) maintenance and development
• Strong communication skills and the ability to work in multidisciplinary teams

The salary range for this role is $170K to $180K annually. Our total compensation packages includes base salary, bonus eligibility, and equity.

Why Join Us?

This is a rare opportunity to own the electronics that power cutting-edge scientific instruments, working shoulder-to-shoulder with leading experts in optics, firmware, and systems engineering.

About Picarro:

Picarro, Inc. is the world's leading producer of greenhouse gas and optical stable isotope instruments, which are used in a wide variety of scientific and industrial applications, including: atmospheric science, air quality, greenhouse gas measurements, gas leak detection, food safety, hydrology, ecology and more. The company's products are all designed and manufactured at Picarro's Santa Clara, California headquarters and exported to countries worldwide. Picarro's products are based on dozens of patents related to cavity ring-down spectroscopy (CRDS) technology. Picarro's solutions are unparalleled in their precision, ease of use, portability, and reliability.

Honors awarded the Company include the World Economic Forum Technology Innovation Pioneer, IHS CERA Energy Innovation Pioneer, the U.S. Department of Energy Small Business of the Year, the TiE50 Winner and the Red Herring Global 100 Winner.

Key investors include Benchmark Capital Partners, Greylock Management Corporation, Duff, Ackerman & Goodrich, Stanford University, Focus Ventures, Mingxin China Growth Ltd., NTT Finance and Weston Presidio Capital.