Eng Sr Prin - Mech

BAE Systems • Nashua, NH

1d • Onsite

About The Position

BAE Systems is seeking a Principal Mechanical Engineer to serve as a Subject Matter Expert (SME) in thermal analysis and management. This role is critical in designing and validating innovative thermal solutions to ensure the reliability and performance of dynamic electronic military systems operating in extreme environments. The ideal candidate will possess a deep expertise in heat transfer, thermodynamics, and thermal modeling, with a proven track record of driving thermal strategies from the IRAD/Proposal phase through to the Qualification phase.

Requirements

• 6+ years of experience in mechanical engineering, with a specialized focus on thermal analysis and a demonstrated ability to lead thermal strategies through the full lifecycle (IRAD/Proposal to Qual Phase).
• Expert-level background in heat transfer and thermodynamics with the ability to operate as a lead analyst and SME reviewer.
• Excellent leadership and communication skills, with the confidence to interface directly with customers regarding complex technical trade-offs.
• Proven ability to work individually or in small team environments and execute complex thermal projects with little to no programmatic support.
• Experience working with integrated military electronic hardware, high-power density electronics, and related thermal test equipment.
• Must be able to obtain a Secret Clearance
• Strong written and verbal communication skills
• Ability to work individually and in team environments
• Strong problem-solving skills and ability to execute complex projects
• Motivated self-starter and problem solver with proven experience executing in multi-disciplinary teams

Responsibilities

• Provide lead thermal oversight for entire projects, complex modules, or high-power LRUs/boxes, operating with high autonomy to ensure thermal stability and system reliability.
• Hold primary responsibility and authority for all thermal design and analysis. Utilize advanced simulation tools to predict thermal behavior and solve complex heat dissipation challenges.
• Support key business pursuits by defining thermal requirements and constraints that meet customer needs; serve as the primary technical point of contact for thermal architecture during customer engagements.
• Develop and optimize robust thermal management solutions (e.g., conduction cooling, liquid cooling, advanced heat sinks) to meet demanding environmental specifications.
• Act as the Thermal Engineering SME and reviewer; perform high-level complex thermal analyses and present findings effectively to program leadership and customers.
• Collaborate across disciplines (Electrical, Mechanical, and Systems) to ensure that thermal constraints are integrated into the overall design, and that cost, schedule, and technical risks are addressed.
• Promote and implement strategic initiatives related to thermal modeling standards, simulation automation, and rigorous peer review processes for thermal reports.
• Lead and mentor a team of engineers, guiding them in the application of thermal analysis best practices to advance their technical proficiency.
• Generate and assess thermal models, perform steady-state and transient analyses, and define test plans for thermal verification and qualification.

Benefits

• health, dental, and vision insurance
• health savings accounts
• a 401(k) savings plan
• disability coverage
• life and accident insurance
• employee assistance program
• legal plan
• discounts on things like home, auto, and pet insurance
• paid time off
• paid holidays
• paid parental leave
• military leave
• bereavement leave
• any applicable federal and state sick leave
• company recognition program to receive monetary or non-monetary recognition awards

What This Job Offers

• Job Type: Full-time
• Career Level: Principal