Senior Mechanical Engineer (Aerospace & Defense)

Location: El Segundo, California, United States. Full-time, on-site position.

Base salary: $140k–$176k per year, excluding bonuses, equity, and benefits.

Company

hirify.global develops Coherent Distributed Network-powered products for aerospace, defense, commercial aviation, and border protection applications. Founded in 2022, the company has raised $1 billion and operates offices in Los Angeles, Washington, D.C., San Francisco, San Diego, Seattle, and London.

What you will do

• Design ruggedized electronic hardware, sensor systems, avionics, enclosures, structures, mechanisms, and support equipment for aerospace and defense programs.
• Develop and maintain 3D CAD models, complex assemblies, detailed production drawings, installation documentation, and interface control documents.
• Own the design and documentation of assigned components, assemblies, mechanical subsystems, and size, weight, and mechanical allocations.
• Perform structural and thermal analyses, hand calculations, requirements analysis, and design verification activities.
• Support prototype fabrication, assembly, integration, testing, qualification, fit-checks, installation, alignment, and troubleshooting.
• Collaborate with mechanical, electrical, RF, power, manufacturing, systems engineering, customers, suppliers, and platform providers on integration, production transition, DFMA, configuration control, fielding, and sustainment.

Requirements

• Bachelor’s degree in Mechanical Engineering or a related discipline.
• 4+ years of relevant experience in mechanical design and integration of electronic hardware for aerospace, defense, or similar applications.
• Strong proficiency with mechanical CAD tools such as SolidWorks or equivalent, including complex parts and assemblies.
• Experience producing and reviewing production-ready mechanical drawings and documentation.
• Understanding of mechanical interfaces, tolerancing, alignment, installation practices, GD&T, tolerance analysis, and configuration-controlled documentation.
• Experience designing or integrating mechanical hardware for RF, avionics, power electronics, embedded computing, or similar products.
• Familiarity with structural analysis methods, including hand calculations and FEA.
• Experience supporting prototype builds, integration, testing, or qualification activities.
• Familiarity with ruggedized hardware and applicable environmental requirements.
• Ability to obtain and maintain a U.S. security clearance. Strong problem-solving skills, attention to detail, and ability to work effectively in fast-paced, multidisciplinary development environments are also required.

Nice to have

• Master’s degree in Mechanical Engineering or a related field.
• Experience with environmental qualification testing and analysis, including thermal cycling, vibration, and shock.
• Experience with commercial FEA or multiphysics tools such as NASTRAN, ABAQUS, ANSYS, COMSOL, or similar.
• Familiarity with military and aerospace standards, including MIL-STD-810.
• Familiarity with military and aerospace connectors such as MIL-DTL-38999, ARINC, and Micro-D.
• Experience with mechanisms, actuation systems, structures, thermal management, packaging, cable routing, connector layouts, or electromechanical integration.
• Experience with additive manufacturing, CNC machining, fabrication, assembly, and prototype development.
• Hands-on experience with machine shop and prototype lab equipment.

Culture & Benefits

• Medical, dental, and vision benefits fully paid by the company.
• 401(k) with a 50% company match up to 6% of pay, plus FSA, HSA, and life insurance.
• Free daily lunch, no-meeting Fridays, unlimited PTO, and casual dress code.
• Competitive base salary, pre-IPO stock options, relocation assistance, and annual bonuses planned for the future.
• Growing organization with 250 employees across five global offices.