Mechanical Engineer - Avionics Integration

Mechanical Engineer
- Avionics Integration

Huntington Beach, California, United States

Founded in 2023, Mach Industries is a rapidly growing defense technology company focused on developing next-generation autonomous defense platforms. At the core of our mission is the commitment to delivering scalable, decentralized defense systems that enhance the strategic capabilities of the United States and its allies. With a workforce of approximately 350 employees, we operate with startup agility and ambition.

Our vision is to redefine the future of warfare through cutting-edge manufacturing, innovation at speed, and unwavering focus on national security. We are dedicated to solving the next generation of warfare with lethal systems that deter kinetic conflict and protect global security.

Mach Industries is seeking an Mechanical Engineer
- Avionics Integration to join our team in designing, integrating, and qualifying the mechanical systems that support next-generation defense platforms. In this hands-on role, you’ll develop avionics mounting architectures, electronics enclosures, wire harnesses, connector interfaces, EMI/EMC protection, and thermal management solutions for reliable, flight-ready hardware.

At Mach Industries, we are redefining the future of defense through advanced, scalable platforms. As a Mechanical Engineer
- Avionics Integration, you will play a key role in taking avionics systems from concept through hardware bring-up, environmental testing, and flight qualification. Collaborating with electrical, firmware, systems, manufacturing, and test teams, you’ll help create rugged, serviceable, and manufacturable hardware built to perform in demanding aerospace environments.

Design and develop avionics mounting architectures, including shock and vibration isolation, structural load paths, serviceability, and connector access.

Own avionics enclosure and electronics packaging design with a strong emphasis on practical EMI/EMC mitigation techniques such as grounding/bonding strategies, shielding effectiveness, cable entry management, conductive gasketing, filtered connectors, and enclosure seam design.

Design and release wire harnesses, including routing, connector selection, strain relief, bend-radius compliance, abrasion protection, shielding termination, grounding schemes, and maintainability.

Support avionics thermal integration by developing conductive and convective heat rejection paths, component-level thermal budgets, and validating performance through testing.

Develop and execute environmental qualification testing for integrated avionics assemblies, including vibration, shock, thermal cycling, ingress protection, and support for EMI/EMC testing.

Work cross-functionally with electrical, firmware, systems, manufacturing, and test teams to manage packaging constraints, connector interfaces, harness architecture, grounding schemes, and hardware bring-up through flight qualification.

Contribute to test plans, technical documentation, and engineering reviews.

Ability to support critical project milestones, including working extended hours or weekends when required.

2+ years of experience in mechanical engineering with a focus on avionics integration, electronics packaging, or wire harness design (professional, academic, or hobby/project experience considered).

Strong experience with 3D CAD tools (e.g., NX, Solid Works, or equivalent) for mechanical design and detailed drawings.

Practical experience with EMI/EMC mitigation techniques, enclosure design, and wire harness routing/integration.

Bachelor’s degree in Mechanical Engineering, Aerospace Engineering, Electrical Engineering, or a related field.

Demonstrated hands‑on experience owning end‑to‑end hardware development and integration efforts (e.g., student aerospace/rocketry teams, UAV projects, automotive electronics integration, or similar).

Experience with environmental qualification testing (vibration, shock, thermal, IP testing).

Working knowledge of thermal management best practices for electronics.

Familiarity with lightweight materials, additive…