Senior Thermal Engineer North Reading, MA

Senior Thermal Engineer (Teradyne, North Reading, MA)

Date: Apr 27, 2026

Location: North Reading, MA, US

We are the global test and automation specialists, powering next-generation technologies through sophisticated solutions. Behind every electronic device you use, Teradyne's test technology ensures your device works right the first time, every time! Our portfolio of automation solutions help manufacturers to develop and deliver products quickly, efficiently and cost-effectively. Together, Teradyne companies deliver manufacturing automation across industries and applications around the world!

We attract, develop, and retain a high-performance workforce, comprised of people with diverse backgrounds and a shared drive for excellence. We strive to foster a positive and inclusive work environment that helps employees, and communities, thrive.

TERADYNE, where experience meets innovation and driving excellence in every connection. We are fueled by creativity and diversity of thought in our workforce. Our employees are supported to innovate and learn something new every day. We cultivate a culture of inclusion for all employees that respects their individual strengths, views, and experiences. We believe that our differences enable us to be a better team—one that makes better decisions, drives innovation, and delivers better business results.

Opportunity Overview

We are seeking a Senior / Principal Mechanical Engineer to provide technical leadership within the System Level Test (SLT) Thermal Engineering group. This role focuses on the design and delivery of advanced thermal solutions that enable testing of high‑power semiconductor devices under challenging operating conditions.

The SLT Thermal group develops end‑to‑end thermal systems, including device‑level cooling hardware, liquid cooling architectures, and active thermal control methods. These solutions support testing of CPUs, GPUs, AI accelerators, automotive ICs, and advanced multi‑die packages at very high-power levels and power densities, where traditional thermal approaches are not sufficient.

This position is suited for an engineer who combines strong fundamentals, hands‑on experimental work, and system‑level thinking, and who is comfortable owning technical direction from concept through production. You will be expected to be the subject‑matter expert and thermal management architect of entire system platforms.

What You’ll Work On

In this role, you will lead the definition, design, and validation of thermal systems that directly enable system‑level semiconductor test. The work spans device interfaces through full system integration and requires close collaboration with mechanical, electrical, controls, software, and systems engineering teams.

• Architecting and developing device‑level thermal solutions, including liquid‑cooled cold plates, advanced thermal interface materials, and mechanically compliant interfaces designed for repeated test contact and high reliability
• Designing and analyzing liquid cooling systems that support very high-power density devices, including multi‑branch and manifolded coolant distribution architectures
• Leading thermal simulation efforts using CFD and analytical methods to assess steady‑state and transient thermal behavior under non‑uniform heat flux and fast power changes
• Developing thermal solutions that support elevated‑temperature operation and rapid thermal transients, where tight junction‑temperature control is critical for test accuracy and device safety
• Defining and executing experimental validation plans, including lab instrumentation, data acquisition, and detailed correlation of experimental results to simulation models
• Collaborating with controls and software engineers to support active thermal control concepts
• Supporting the transition of thermal designs from prototype through qualification and high‑volume manufacturing, including supplier engagement and technical issue resolution
• Mentoring junior engineers, reviewing technical work, and contributing to thermal design best practices and standards within the organization

• Working directly with semiconductor…