Senior Thermal Analysis Engineer

Boulder · Lexington, MA (LEX-01) · USD 126,000-167,000 · 7+ years experience · Full-time · Posted Sep 24, 2026

At a glance

The Senior Thermal Analysis Engineer will perform thermal analysis and take ownership of thermal design aspects across hardware development programs. This role involves guiding preliminary design architecture, developing detailed analytical models, and supporting hardware testing from conceptualization through production.

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.
Collaborate with environmental test engineers on 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.

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 using STAR-CCM+, ANSYS, Icepak, or Flotherm.
Familiarity with Matlab or Python for analytical modeling and data post-processing.
Experience performing test-model correlation and test-based characterization of modeling input parameters.
Ability to work independently and with various teams and stakeholders.
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.
Understanding of instrumentation and data acquisition fundamentals.
Knowledge of operating chambers, DAQs, and other major test apparatus.
CAD skills and ability to make engineering drawings.
Experience in an immersive interdisciplinary technical project.
Basic knowledge of MIL-STD-810 or equivalent.