Principal Mechanical Engineer (RF)

Location: Torrance, California, United States. The role is subject to ITAR requirements and requires U.S. citizenship, lawful permanent residence, protected-individual status, or eligibility to obtain the required U.S. authorizations.

Salary: $138,000–$193,000 USD annually in California.

Company

hirify.global develops solid-state, human-safe directed-energy systems and power-management solutions for defense and commercial electronics.

What you will do

• Define mechanical architectures for next-generation systems and develop technology that improves system performance and power efficiency.
• Design and build electronics enclosures, mechanisms, mounting structures, harnesses, and cable assemblies for RF phased arrays.
• Translate system objectives into mechanical requirements, load cases, weight budgets, and interface diagrams.
• Perform structural and thermal analyses and support testing, prototyping, environmental qualification, and design verification.
• Create CAD models and manufacturing drawings with tolerance analysis and GD&T in accordance with ASME Y14.5.
• Lead mechanical design teams, mentor junior engineers, and collaborate with electrical, RF, systems, manufacturing, supply chain, and external vendors.

Requirements

• BS degree in Mechanical, Aerospace, Structural, or a related engineering field.
• 8+ years of mechanical design and analysis experience with ownership across a full product lifecycle.
• Expertise with SolidWorks or equivalent mechanical design packages and practical GD&T application.
• Strong fundamentals in structures, thermodynamics, and mechanisms, plus basic FEA and structural and thermal hand calculations.
• Experience assembling prototypes and first-article builds, including testing, troubleshooting, and minor fabrication.
• Ability to understand and contribute to electrical schematics, diagrams, and interconnects.

Nice to have

• MS degree in Mechanical, Aerospace, Structural, or a related engineering field.
• Experience with kinematic synthesis, electric actuation, mechatronics, instrumentation, or phased-array design and analysis.
• Experience testing systems under static loading, shock, and random-vibration environments.
• Experience improving workflow scalability in a fast-paced engineering environment.

Culture & Benefits

• Collaborative work across electrical, RF, systems, manufacturing, and supply chain disciplines.
• Emphasis on technical excellence, continuous learning, and continuous improvement of design practices.
• Opportunity to work on high-performance defense and commercial electronics systems.