Sr. Mechanical Engineer

Job Title: Sr. Mechanical Engineer

Department: Engineering

Location: Germantown, MD

FLSA Status: Exempt

Job Summary:

Maxtena is seeking an experienced Senior Mechanical Engineer to lead the mechanical design and development of compact, high-performance electronics enclosures and RF-enabled hardware.

You will be responsible for taking products from early concept through detailed design, prototyping, testing, and production. You’ll work closely with electrical, RF, thermal, manufacturing, and systems engineers to develop enclosures that protect sensitive electronics while meeting demanding size, weight, performance, and environmental requirements.

This is a hands-on engineering role for someone who is comfortable working at the component and enclosure level while understanding the broader system-level implications of their designs.

Essential Duties and Responsibilities:

• • Lead the mechanical design of small, complex electronics enclosures from concept through production.
  • Design and optimize EMI/RF shielding, including enclosure architecture, seams, joints, gaskets, interfaces, and grounding strategies.
  • Develop RF-transparent radome and RF window designs, balancing electromagnetic performance with mechanical strength, environmental durability, manufacturability, and appearance.
  • Develop mechanical and thermal solutions for high-density electronics, including conduction cooling, heat spreading, heat sinks, thermal interfaces, and passive cooling strategies.
  • Design for demanding environmental conditions, including water ingress, dust, vibration, shock, temperature extremes, corrosion, and outdoor exposure.
  • Select appropriate materials, coatings, finishes, seals, gaskets, adhesives, and joining methods for demanding applications.
  • Perform mechanical analysis and engineering calculations, including thermal, structural, tolerance, and vibration analysis as appropriate.
  • Create detailed 3D CAD models, drawings, assemblies, and engineering documentation.
  • Work directly with prototype shops, suppliers, and manufacturing partners to develop and refine designs.
  • Build and test prototypes, investigate failures, and drive design improvements.
  • Establish and maintain GD&T, tolerance stacks, DFM/DFA, and design-for-test considerations.
  • Participate in environmental, EMI/EMC, RF, thermal, and mechanical qualification testing.
  • Mentor junior mechanical engineers and provide technical leadership on complex design problems.
  • Contribute to engineering standards, design methodologies, and product development processes.
    
    

Preferred Qualifications:

• Must be a U.S. Citizen with the ability to obtain Secret Clearance.
• Bachelor’s degree in Mechanical Engineering or related field, Master's degree preferred.
• 8+ years of mechanical design and engineering experience.
• Demonstrated ownership of complex electronics or RF mechanical packaging from architecture through production.
• Strong experience with thermal management of electronics and RF hardware.
  
• Experience designing for severe environmental conditions, including shock, vibration, temperature, humidity, and ingress protection.

• Experience designing parts for high-volume manufacturing, such as injection molding and metal die casting.

• Advanced proficiency with a modern 3D CAD system such as Solidworks.

• Strong understanding of GD&T, tolerance analysis, mechanical drawings, and configuration-controlled engineering documentation.

• Experience with structural and/or thermal analysis tools, such as Solidworks Simulation or ANSYS.

This is a highly collaborative, hands-on role for someone who enjoys owning difficult mechanical problems and seeing their designs progress from concept to prototype to real products.

Maxtena is an Equal Opportunity Employer.