Senior Mechanical/Thermal Engineer

Leidos is seeking a Senior Mechanical/Thermal Engineer to join our Directed Energy team in Albuquerque, New Mexico. The ideal candidate will have a background in thermal analysis, engineering design, and thermal controls. The successful candidate will work with a multidisciplinary team of engineers, scientists, technicians, and fabricators in a research and development environment supporting advanced directed energy technologies, including high‑power microwave, RF, electromagnetic, and pulsed‑power systems. Please note: This position is located on‑site in Albuquerque, NM. There may be opportunity to telework occasionally.

Primary Responsibilities

• The engineer will be responsible for taking mechanical designs from concept through detailed design, fabrication, assembly, integration, and test.
• Secondary responsibility for capturing cooling requirements for directed energy systems, developing thermal control systems that satisfy those requirements, supervising their construction, and conducting testing and troubleshooting on cooling equipment to verify performance.
• Duties may include documenting designs and presenting them to the customers, generating bills of materials and coordinating their purchase, auditing as‑build systems for compliance to design, and documenting test results.
• Create 3D solid models and detailed mechanical designs for innovative hardware, equipment, and systems, carrying designs from initial requirements and concepts through fabrication, assembly, integration, and testing.
• Perform appropriate engineering analysis to support design decisions and verify mechanical performance.
• Create and maintain engineering drawings, including appropriate dimensions, tolerances, and other manufacturing requirements, in accordance with company standards and customer specifications.
• Design hardware with consideration for manufacturability, material selection, machining, welding, fabrication, assembly, and maintenance requirements.
• Work directly with Leidos machinists, fabricators, technicians, and external vendors to develop, procure, and support fabrication of mechanical components and assemblies.
• Resolve design, fabrication, assembly, and testing issues by developing practical and effective mechanical solutions.
• Support hands‑on assembly, integration, troubleshooting, modification, and testing of prototype and experimental hardware.
• Collaborate with engineers and scientists from multiple technical disciplines to develop mechanical interfaces and integrated system solutions.
• Manage multiple engineering tasks and projects while effectively balancing technical requirements, schedules, and priorities.
• Communicate technical concepts, design decisions, and status effectively to engineering teams, project leadership, customers, and manufacturing personnel.
• Provide technical leadership for significant mechanical subsystems or projects, including establishing mechanical approaches, interfaces, and solutions for complex multidisciplinary problems.
• Collaborate with customers, engineers, and technicians to develop cooling requirements.
• Conduct FEA thermal analysis to quantify heat loads and cooling needs.
• Design cold plates and heat exchangers to manage heat flow.
• Conduct CFD analysis to calculate flow rates, pressure drop and heat removal.
• Size commercial heat exchangers, fluid pumps and fans in accordance with thermal requirements and analysis.
• Develop 3D models, drawings and flow diagrams to document the design of thermal control systems.

Basic Qualifications

• Bachelor’s degree in mechanical engineering or closely related field with 8+ years of experience or a master’s degree with 6+ years of experience with mechanical or thermal systems.
• Must be a US Citizen.
• Must meet the eligibility to obtain and maintain a Secret Clearance.
• Demonstrated experience developing mechanical hardware from concept through detailed design, fabrication, assembly, integration, and testing.
• Proficiency with SolidWorks, including 3D part and assembly modeling and creation of detailed engineering drawings; experience with PDMWorks.
• Working familiarity with cooling components such as heat exchangers, chillers, pumps, and cooling fans.
• Experience applying mechanical design principles, material selection, tolerancing, and design for manufacturability in the development of fabricated hardware.
• Ability to work independently and collaborate effectively with machinists, fabricators, technicians, engineers, and scientists.
• Experience with thermal measurement diagnostics such as thermocouples, flow gauges, and pressure sensors.
• Strong written and verbal communication skills and be able to lead meetings with large groups of people.
• Demonstrated ability to develop practical solutions to complex mechanical design, fabrication, assembly, and testing problems.
• Ability and willingness to adhere to government and company safety requirements.
• Ability to manage multiple projects or engineering tasks while maintaining project schedules and priorities.
• Work location is predominantly Albuquerque, NM.
• Candidate must be a resident of, or be willing to relocate to, Albuquerque, NM.

Preferred Qualifications

• Experience with directed energy systems, vacuum components, and pulsed power systems.
• Skilled in the use of Simulink to model thermal control systems.
• Adaptable in fast‑paced environments.
• Experience with SolidWorks Simulation.
• Application of GD&T to mechanical engineering drawings.
• Design of machined, welded, sheet metal, and fabricated mechanical components and assemblies, including designs requiring multiple manufacturing processes.
• Experience with prototype, low‑volume, and research and development hardware.
• Structural analysis of mechanical components, assemblies, and systems using analytical methods and FEA as appropriate.
• Thermal and heat‑transfer analysis of mechanical and electromechanical systems, including development of practical thermal management solutions.
• Mechanical packaging and integration of multidisciplinary systems.
• Hardware assembly, integration, testing, troubleshooting, and field operations.
• Vacuum systems, vacuum hardware, and pressure vessels.
• Experience with mechanical design and integration for electromagnetic, RF, high‑power microwave, or pulsed‑power systems.
• Department of Defense or other government research and development programs experience.
• Active DoD security clearance.

Pay Range

Pay Range $107,900.00 – $195,050.00. The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Work Location

Work location is predominantly Albuquerque, NM. Candidate must be a resident of, or be willing to relocate to, Albuquerque, NM.

Pay and Benefits

• Competitive compensation
• Health and Wellness programs
• Income Protection
• Paid Leave
• Retirement

More details are available here.

Commitment and Diversity

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law.

Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Securing Your Data

Leidos will never ask you to provide payment‑related information at any part of the employment application process.

And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment‑related information or any other personal information, please report the email to View email address on click.appcast.io.

Leidos Overview

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026.