Staff/Principal ATE Test Engineer

Claros is a power management solutions company that is innovating at the intersection of power and compute to make AI more sustainable and widely available. By driving down the cost and complexity of power delivery and leveraging innovative hardware and software, the company seeks to decrease energy consumption, optimize power delivery, increase compute performance, and maximize the efficiency of AI operations.

Staff/ Principal ATE Test Engineer

About The Team

We are open-minded, fast paced, problem solvers that value open dialogue and candor. Our passion is to challenge the status-quo and we embrace transformational thinking. Our response is never “no, but….” instead “yes, if….”. We are mindful of our personal and organizational blinders and try to build an environment where our team members are At Their Best.

Location: Minimum of 3 days a week in the office in Torrance, CA.

About The Role

We are seeking a highly experienced Principal ATE Test Engineer to lead test development and production test strategy for a high-performance integrated voltage regulator (IVR) semiconductor product line targeting advanced AI and HPC power delivery applications.

This role is focused primarily on semiconductor test engineering, spanning DFT collaboration, characterization support, wafer probe, final test, hardware development, production ramp, and manufacturing optimization. The ideal candidate combines deep technical expertise in mixed-signal and power semiconductor test with strong leadership across silicon bring-up and high-volume manufacturing environments.

The candidate is expected to operate as a senior technical leader capable of driving test strategy independently across internal teams and external manufacturing partners.

What You Will Do

Define overall manufacturing test strategy for IVR silicon across wafer probe and package final test

Develop production screening methodologies for:

Analog and mixed-signal circuits

Integrated ADCs and telemetry

Digital control and state machines

PMBus/I2C interfaces

OTP/eFuse programming

Protection and fault-management circuitry

Power-stage functionality and efficiency

Partner with Design and DFT teams to ensure robust testability and manufacturability

Lead development of wafer sort and final test solutions on production ATE platforms, including:

ATE Test programs

Probe/load board hardware

Calibration methodologies

Thermal management approaches

Multisite test architectures

Drive aggressive test time reduction while maintaining production quality targets.

Support transition from engineering characterization flows into scalable high-volume production test

Support first-silicon bring-up activities and debug of manufacturing test flows

Support trim development, calibration algorithms, and production limit setting

Debug silicon, hardware, and software issues observed during characterization and manufacturing ramp

What You Bring

10+ years in the semiconductor industry, with a proven track record developing manufacturing test solutions for high-volume semiconductor products.

BS/MS in Electrical Engineering or related field

Experience with mixed-signal and/or power management IC MFG test development

Strong understanding of:

Wafer probe and final test flows

Mixed-signal ATE methodologies

Yield analysis and characterization

Test hardware development

Test time optimization

OSAT manufacturing flows

Experience with high-volume semiconductor manufacturing environments

Strong debugging capability across silicon, hardware, software, and manufacturing domains

Experience working with foundries and outsourced manufacturing/test partners

Familiarity with PMBus, I2C, telemetry, and power management architectures

Experience with Advantest, Teradyne, or Cohu mixed-signal/power ATE platforms

Understanding of DFT methodologies for mixed-signal SoCs

Salary Range : $160k-$200k. This represents the typical salary range for this position based on experience, skills, and other factors.

Our Red Cell Partners Benefits:

Career track opportunity with potential for rapid advancement with strong performance as the firm grows

100% employer paid, comprehensive health care including medical, dental, and vision for you and your family.

Paid maternity and paternity for 14 weeks at employees' normal pay.

Unlimited PTO, with management approval.

Opportunities for professional development and continued learning.

Optional 401K, FSA, and equity incentives available.

Applicant Data Disclosure

By submitting an application, you acknowledge that Red Cell Partners, LLC ("Red Cell") uses third-party service providers to facilitate its recruitment and hiring processes. These providers include applicant tracking systems, candidate verification platforms, and fraud detection tools (collectively, "Hiring Platforms"). Your application materials, including your résumé, cover letter, work samples, responses to application questions, and any other information you submit, may be tra…