Thermal-Fluids Engineer-Technical Staff

Thermal-Fluids Engineer-Technical Staff

Date:
Jan 21, 2026

Location: Lexington, MA, US

Company: MIT Lincoln Laboratory

The Structural & Thermal-Fluids Engineering Group develops first-of-a-kind prototype systems across underwater, ground, air, and space domains for high-impact national security missions. Engineers work on advanced structural and material systems for space-based imaging and laser communications, thermal management solutions from cryogenic to hypersonic regimes, and aerodynamic design and assessment for unmanned aerial vehicles, airborne pods, and hypersonic platforms. Solutions are realized through the integration of high-fidelity analytical and computational modeling, multidisciplinary simulation, environmental testing, and advanced materials, addressing demanding performance, size, weight, power, and environmental constraints that are at the forefront of current engineering capabilities.

The Group offers a collaborative, hands-on environment where engineers pair deep analytical expertise with direct ownership of hardware development, integration, and testing. Engineers are supported in their growth through mentorship and opportunities for increasing technical and programmatic leadership, participation in conferences and professional societies, and direct engagement with mission partners and government sponsors.

The Group is seeking an engineer with strong expertise in thermal-fluid systems to lead and execute the design, analysis, development, integration, and testing of complex prototypes across a range of environments and missions. Candidates are expected to apply tools ranging from first-order analytical methods to high-fidelity FEA and CFD to generate actionable engineering insights that directly inform design decisions. Beyond analysis, the role includes hands-on ownership of hardware assembly, integration, and experimental testing (including test planning, execution, and data interpretation).

The successful candidate will work within interdisciplinary teams to deliver operational prototype systems, spanning the full life cycle from early concept development through fabrication, test, and field deployment.

• Ph.D. in Mechanical Engineering, Aerospace Engineering, or a related field; exceptional candidates with a Master's degree and relevant work experience are also encouraged to apply.
• Experience applying modern numerical simulation tools (e.g., COMSOL, ANSYS, Thermal Desktop) to component- and system-level thermal and fluid systems analysis.
• Experience with cryogenic systems—including cryocooler technologies and/or thermodynamic cycle analysis (e.g., Sage)—is desired.
• Demonstrated ability to collaborate effectively within multidisciplinary engineering teams.
• Strong written and oral communication skills, with the ability to communicate complex technical results to diverse audiences.
• Ability to obtain and maintain a security clearance is required.
• This position may require periodic travel to meetings and field sites.

Recent Graduate Hiring Range: $145,200 - $170,000

Experienced Hiring Range: $145,200 - $220,000

Disclaimer: MIT Lincoln Laboratory provides a typical hiring range as a good faith estimate of what we reasonably expect to offer for this position at the time of posting. The final salary offered to a selected candidate will depend on various factors, including—but not limited to—the scope and responsibilities of the role, the candidate's experience, skills and education/training, internal equity considerations and applicable legal requirements.

This range reflects base salary only and does not include additional forms of compensation or benefits.

At MIT Lincoln Laboratory, our exceptional career opportunities include many outstanding benefits to help you stay healthy, feel supported, and enjoy a fulfilling work-life balance. Benefits offered to employees include:

• Comprehensive health, dental, and vision plans
• MIT-funded pension
• Matching 401K
• Paid leave (including vacation, sick, parental, military, etc.)
• Tuition reimbursement and continuing education programs
• Mentorship programs
• A range of work-life…