Thermal Analysis Engineer

Waltham · Lexington, MA (LEX-01) · USD 129,000-171,000 · 7+ years experience · Full-time · Posted Sep 24, 2026

At a glance

The Thermal Analysis Engineer will perform thermal analysis and take ownership of thermal design aspects across hardware development programs.
This role involves executing first-order assessments, developing detailed analytical models, and creating predictions to support hardware testing.
The engineer will work on projects from conceptualization through production, focusing on validated and correlated models for rapid prototyping.

Execute hand calculations, spreadsheet, and MATLAB/Python first-order models to inform design decisions.
Develop CFD models and simulations to predict temperatures, heat transfer, and fluid characteristics.
Generate, maintain, and correlate integrated FEMs for imaging platforms.
Perform test-model correlation testing to validate analytical predictions.
Work with environmental test engineers to support design, instrumentation selection, execution, and data processing.
Prepare technical reports for internal teams, management, and external customers.
Stay current with advancements in thermal analysis techniques, materials technology, and industry standards.

Currently pursuing or have obtained a MS or higher degree in engineering or applied physics with focus on heat transfer and fluid dynamics.
7+ years of experience in a thermal analysis or thermo-physics analysis role.
Thermal FEA experience with STAR-CCM+, ANSYS, Icepak, or Flotherm.
Familiarity with Matlab or Python for developing analytical models and data post-processing.
Experience with performing test-model correlation and test-based characterization of modeling input parameters.
Ability to work independently and with various teams and key stakeholders.
Highly motivated, self-starting, results-oriented, and capable of working in a dynamic environment.
Eligible to obtain and maintain an active U.S. Secret security clearance.

Performed structural, thermal, and optical performance (STOP) models for high performance imaging systems.
General knowledge of climatic and/or dynamic testing including instrumentation and data acquisition fundamentals.
Knowledge on how to run and operate chambers, DAQs, and other major test apparatus.
CAD skills and ability to make high quality engineering drawings.
Experience in an immersive interdisciplinary technical project.
Basic knowledge of MIL-STD-810 or equivalent.