Senior Electrical Engineer

Location: San Bruno, California

Department: Hardware

About this Role:

As a Senior Electrical Engineer at Mill, you will own the compute, sensing, and connectivity layer of the hardware — the digital systems that tie the product together. You'll work hands-on with firmware, mechanical, and systems engineers, taking embedded Linux platforms, mixed-signal PCBAs, and camera and vision systems from architecture through production.

Responsibilities:

• Design and bring up mixed-signal PCBAs and SoM carrier boards, including display and UI subsystems — from schematic capture through layout, test, and validation
• Integrate and validate camera modules, image sensors, and sensing hardware — own the electrical design from sensor to carrier board: connectors, cable assemblies, and interface routing
• Design multi-branch wire harness assemblies for mixed-signal and power routing in rugged, high-reliability environments
• Build and own test infrastructure — bench fixtures, automated test scripts, and ATE procedures — for hardware validation and production screening
• Lead new platform validation; drive root-cause analysis and collaborate with firmware on interface debug
• Partner with manufacturing teams on DFM/DFT, stackup decisions, vendor qualification, and NPI; collaborate with mechanical engineers on packaging and thermal trade-offs
• Own the system-level picture across concurrent programs, define scope in ambiguous situations, and adapt quickly as priorities shift

Qualifications:

Required

• BS or MS in Electrical Engineering (or equivalent); 5+ years of hands-on experience on production hardware products
• Demonstrated end-to-end ownership of low-voltage digital and mixed-signal PCBAs — schematic capture, component selection, layout, and manufacturing release
• Experience designing carrier boards for System on Module (SoM) platforms, including high-speed interfaces (MIPI CSI-2, GMSL2/SERDES, PCIe, USB, GigE) and peripheral integration via standard serial protocols (SPI, I2C, UART); comfortable at the hardware/firmware boundary
• Familiarity with embedded Linux systems — comfortable working alongside firmware on BSP bring-up, driver validation, and interface debugging
• Able to independently bring up and debug new hardware; comfortable with oscilloscopes, logic analyzers, and standard bench equipment; hands-on with PCB rework and cable assembly
• Strong communicator; able to work independently and drive cross-functional workstreams to completion

Preferred

• Test automation experience: Python or bash scripting for bench or ATE, fixture design, and parametric measurement
• Wireless and RF integration experience: antenna placement, module selection, multi-radio integration, and FCC certification process
• Wire harness and cable assembly design experience: connector selection, drawing packages, and DFM
• Startup experience preferred. 

The estimated base salary range for this position is $195 to $225k, which does not include the value of benefits or a potential equity grant. A wide range of factors are considered in making compensation decisions, including but not limited to skill sets, market conditions, experience and training, licensure and certifications, and business and organizational needs.