Thermofluid Systems Test Engineer

About the role

To support our extraordinary teams who build great products and contribute to our growth, we’re looking to add a Thermofluid Systems Test Engineer located in Littleton, MA.

Responsibilities

• Own hands-on testing of Coolant Distribution Units (CDUs) and related subsystems, including pumps, heat exchangers, tubing, valves, and fluids.
• Design, build, instrument, and operate automated thermo-fluid test stands to characterize flow, pressure drop, thermal performance, and system behavior.
• Develop and maintain PLC-based controls, data acquisition, and automation for repeatable, long-duration, and qualification testing.
• Execute test plans, analyze results, and deliver clear, test-driven feedback to design and systems engineering teams.
• Support design reviews and product decisions by translating test data into actionable insights and risk assessments.
• Improve lab capability by identifying gaps in tooling, instrumentation, controls, and test coverage for CDU development and validation.
• Support troubleshooting and root-cause investigations across development, qualification, production, and field issues related to thermo-fluid performance.

Requirements

• 7+ years of hands-on experience testing and qualifying thermo-fluid systems in data center cooling, automotive, medical, or industrial environments, including direct experience with CDUs or comparable systems.
• Strong practical understanding of fluid dynamics, thermodynamics, and heat transfer, applied to test execution and data interpretation.
• Demonstrated experience leading performance and qualification testing, including flow, pressure, thermal efficiency, durability, and fault-mode testing.
• Proven ability to design, build, instrument, and commission custom thermo-fluid test stands with pumps, valves, heat exchangers, sensors, and safety interlocks.
• Experience developing and executing structured test plans, qualification matrices, and acceptance criteria, with ownership of test execution and results.
• Strong data acquisition and analysis skills, including sensor selection, calibration, data logging, and post-processing.
• Proficiency with PLC-based controls and test automation, including modifying control logic for automated sequences and safe system operation.
• Demonstrated ability to troubleshoot complex system-level issues through hands-on testing and structured root-cause analysis.
• Ability to clearly document and communicate test plans, results, failures, and margin assessments to engineering teams and senior stakeholders.

Qualifications

• Bachelor's degree in Mechanical Engineering, Materials Science, Chemical Engineering, or a related field.
• Master's degree in Mechanical Engineering, Materials Science, Chemical Engineering, or a related field preferred.

Skills

• Thermofluid Systems Testing
• Automated Test Stand Design and Operation
• Data Acquisition and Analysis
• PLC-Based Controls and Automation
• Root-Cause Analysis

Benefits

• Full range of medical, dental, and vision plans
• Life Insurance
• Short-term and Long-term Disability
• Matching 401(k) Contributions
• Vacation and Paid Sick Time
• Tuition Reimbursement

Pay

Pay Range (Applicable to Massachusetts): $126,500.00 USD - $173,900.00 USD Annual

Schedule

N/A

What You'll Receive

• Full range of medical, dental, and vision plans
• Life Insurance
• Short-term and Long-term Disability
• Matching 401(k) Contributions
• Vacation and Paid Sick Time
• Tuition Reimbursement