Senior Mechanical Engineer - Structural/Thermal Analysis

Posted Yesterday
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Merrimack, NH, USA
Hybrid
133K-226K Annually
Senior level
Aerospace • Hardware • Information Technology • Security • Software • Cybersecurity • Defense
Where purpose connects.
The Role
Leads structural and thermal analysis for aerospace and mission-critical hardware using classical engineering methods and FEA tools. Performs modal, vibration, shock, static, steady-state, and transient thermal analyses; develops and post-processes models; influences architecture and design decisions; communicates risks and recommendations; and mentors junior engineers. The hybrid role requires at least 50% onsite presence and eligibility for a Secret DoD security clearance.
Summary Generated by Built In
Job Description
Job Description:
We are seeking an experienced Mechanical Engineer with strong skills in structural analysis, thermal analysis, and finite element analysis (FEA) to support a wide range of products across the BAE Systems Aerospace and Mission Systems segment. This is a full-time analysis position focused on structural and thermal modeling, simulation, and engineering assessment. This role supports multiple business areas and includes work on electronics, EO/IR systems, RF components, precision mechanisms, and mission-critical hardware.
As part of the Mechanical Analysis Capability Group, you will join a cross-sector team of full-time analysts who apply advanced engineering and simulation methods to understand, model, and predict mechanical behavior across diverse product lines. Senior candidates will provide technical leadership for complex analysis challenges and influence early architecture and major design decisions. Candidates who enjoy hands-on analysis, modeling, and practical engineering judgment will excel in this role.
Key Responsibilities:
  • Provide expert-level technical leadership for complex structural and thermal analysis challenges, influencing early architecture and major design decisions.
  • Define analysis objectives and approaches for ambiguous or first-of-kind technical problems with minimal guidance.
  • Perform structural and thermal analyses using both classical engineering methods and industry-standard FEA tools.
  • Create and post-process finite element models from component-level to system-level using tools such as Siemens Simcenter 3D/NX, NASTRAN, Ansys Mechanical, and Ansys Icepak.
  • Execute modal, vibration, shock, static, steady-state, and transient thermal analyses.
  • Collaborate with multidisciplinary design teams to optimize system performance, reliability, and manufacturability.
  • Lead analysis planning and technical reviews; mentor and guide junior engineers across programs.
  • Communicate analysis results, technical recommendations, and risk assessments to internal and external stakeholders.
  • Support program execution both onsite and remotely. This is a Hybrid role that requires at least 50% onsite presence.

Required Education, Experience, & Skills
  • Bachelor's Degree in Mechanical or Aerospace Engineering and 8+ years of relevant experience
  • Demonstrated experience in FEA, modal and vibration analysis, shock, and static analysis of structures
  • Experience performing steady-state and transient heat transfer modeling
  • Ability to simplify complex problems into efficient analysis approaches that provide clear, actionable feedback.
  • Strong communication skills and ability to work effectively in both onsite and remote team environments.
  • Eligibility to obtain a DoD Security Clearance at the "Secret" level

Preferred Education, Experience, & Skills
  • Master's Degree in Mechanical or Aerospace Engineering and 8+ years of relevant experience.
  • Experience with industry standard pre/post processors such as Simcenter 3D, Femap, ANSYS Workbench, ANSYS Mechanical, Hypermesh, etc.
  • Experience with solvers such as NASTRAN, Abaqus, ANSYS, LS-Dyna, RADIOSS, Optistruct, etc.
  • Knowledge of structural and thermal design of electronics
  • Familiarity with composite materials and printed circuit board technologies
  • Experience evaluating structural fatigue and solder joint reliability (creep, vibration fatigue, shock).
  • Familiarity with STOP analysis (Structural, Thermal, Optical Performance) using tools such as SigFit
  • Active Secret clearance.

Pay Information
Full-Time Salary Range: $132962 - $226035
Please note: This range is based on our market pay structures. However, individual salaries are determined by a variety of factors including, but not limited to: business considerations, local market conditions, and internal equity, as well as candidate qualifications, such as skills, education, and experience.
Employee Benefits: At BAE Systems, we support our employees in all aspects of their life, including their health and financial well-being. Regular employees scheduled to work 20+ hours per week are offered: health, dental, and vision insurance; health savings accounts; a 401(k) savings plan; disability coverage; and life and accident insurance. We also have an employee assistance program, a legal plan, and other perks including discounts on things like home, auto, and pet insurance. Our leave programs include paid time off, paid holidays, as well as other types of leave, including paid parental, military, bereavement, and any applicable federal and state sick leave. Employees may participate in the company recognition program to receive monetary or non-monetary recognition awards. Other incentives may be available based on position level and/or job specifics.
About BAE Systems, Inc.
BAE Systems, Inc. is a defense, aerospace, and security company headquartered in Falls Church, Virginia, with more than 40,000 employees worldwide. We serve, supply, and protect those who protect us. As one of the most geographically diverse international defense companies, we deliver a full range of products and services spanning air, land, maritime, space, and cyber, including advanced electronics, intelligence solutions, and dedicated customer support.
Our culture is performance-driven and values-led, built on curiosity, creativity, and collaboration. Purpose isn't a tagline here. It's what drives us. We're developing breakthrough technologies that defend national security and make a lasting impact on our communities and our planet. When you join BAE Systems, you're not just building a career. You're contributing to a mission that truly matters.
This position will be posted for at least 5 calendar days. The posting will remain active until the position is filled, or a qualified pool of candidates is identified.

Skills Required

  • Bachelor's degree in Mechanical or Aerospace Engineering
  • 8+ years of relevant experience
  • Experience in finite element analysis, modal and vibration analysis, shock analysis, and static structural analysis
  • Experience performing steady-state and transient heat transfer modeling
  • Ability to simplify complex problems into efficient analysis approaches and provide actionable feedback
  • Strong communication skills and ability to work effectively onsite and remotely
  • Eligibility to obtain a DoD Secret security clearance
  • Master's degree in Mechanical or Aerospace Engineering
  • Experience with Simcenter 3D, Femap, ANSYS Workbench, ANSYS Mechanical, Hypermesh, or similar pre/post processors
  • Experience with NASTRAN, Abaqus, ANSYS, LS-Dyna, RADIOSS, Optistruct, or similar solvers
  • Knowledge of structural and thermal design of electronics
  • Familiarity with composite materials and printed circuit board technologies
  • Experience evaluating structural fatigue and solder joint reliability
  • Familiarity with STOP analysis using tools such as SigFit
  • Active Secret clearance

What the Team is Saying

BAE Systems, Inc. Compensation & Benefits Highlights

  • Healthcare Strength — Health coverage is broad with medical, dental, and vision options, plus mental health and EAP resources, and U.S. eligibility that can begin quickly. Materials also reference wellbeing programs designed to support employees and their families.
  • Retirement Support — Retirement offerings include a U.S. 401(k) savings plan with company match information highlighted in benefits summaries. Global materials also reference pension contributions in some regions, indicating solid long-term financial support.
  • Parental & Family Support — Programs include paid parental leave, adoption and surrogacy assistance, and back-up child and elder care for U.S. employees. Family resources and caregiving support are emphasized across benefit materials.

BAE Systems, Inc. Insights

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The Company
HQ: Falls Church, VA
40,000 Employees
Year Founded: 1999

What We Do

Improving the future and protecting lives is an ambitious mission, but it’s what we do. As a leading aerospace, defense, and security company, we work together to deliver a full range of products and services for air, land, space, and naval forces, as well as advanced electronics, security, information technology solutions and customer support services. How we work is rooted in purpose – a purpose to protect those who protect us, to unite our community of colleagues and customers, and to drive forward the growth and development of our exceptional team members. It's where purpose connects.

Why Work With Us

We believe your career should be filled with innovation and discovery. And that's exactly what you'll find at BAE Systems. As you work to develop the latest technology and defend national security, you will continually hone your skills and expand knowledge. On a sharp and collaborative team, you will be challenged – and supported – at every turn.

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BAE Systems, Inc. Teams

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About our Teams

BAE Systems, Inc. Offices

Hybrid Workspace

Employees engage in a combination of remote and on-site work.

As the work place continues to evolve, so do we. Remote and hybrid opportunities are available at BAE Systems depending on the nature of the role. Check your job requisition to learn more.

Typical time on-site: Not Specified
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HQBAE Systems, Inc. headquarters
Annapolis Junction, MD
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Austin, TX
Boulder, CO
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Space & Mission Systems headquarters
Burlington, MA
Cedar Rapids, IA
Dallas, TX
Endicott, NY
Fort Wayne, IN
Greenlawn, NY
Huntsville, AL
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Los Angeles, CA
Maple Grove, MN
Intelligence & Security headquarters
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Redmond, WA
San Diego, CA
San Jose, CA
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Sterling Heights, MI
Washington, DC
Wayne, NJ
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