Senior Mechanical Engineer – Design Lead (Energy Tech)

Calnetix Technologies, LLC; Cypress (CA); On-site; USD 155,000 - 185,000; Full time

Job summary

Calnetix Technologies, LLC in Southern California is seeking a Mechanical Engineer with a strong hands-on background to lead from design through production release. You will apply engineering fundamentals to develop high‑performance mechanical systems, with emphasis on robustness for aerospace/defense contexts.

The role focuses on thermal management, electronics packaging, and electro‑mechanical integration using SolidWorks, GD&T, and robust calculations.

Qualifications

• Mechanical Engineering Degree with minimum 10 years of relevant experience.
• Experience supporting thermal management, shock/vibration robustness, EMI-conscious packaging, and environmental sealing solutions.
• Experience with PCB/PWA integration and high voltage electronics packaging with wiring according to IPC/WHMA‑A‑620.
• Experience designing electronics packaging with aerospace/defense requirements and MIL‑STD‑810, MIL‑STD‑5400, or RTCA DO‑160.
• Experience with IP ratings per IEC 60529 and how they are achieved in practice.
• Capability to conduct/check structural and thermal simulations and support with hand calculations.
• Understanding of engineering material selection and how to apply.
• Understanding of basic electrical components and functions.
• Experience with cable harnesses and routing best practices.
• Proficiency in SolidWorks and GD&T per ASME Y14.5.

Responsibilities

• Lead mechanical design and electronics packaging development activities in SolidWorks from concept through production release.
• Provide technical oversight including design tradeoffs, manufacturability, stack‑up analyses, and reviews.
• Contribute to core engineering design and development in new areas of expertise.
• Support risk identification, mitigation plans, and alternative design approaches.
• Take design ownership on projects and provide engineering signature approval on mechanical drawings.
• Ensure timely completion of design deliverables, including drawings and analyses.

Skills

Thermal management

EMI packaging

PCB integration

High voltage packaging

SolidWorks

GD&T Y14.5

Engineering analysis

Mechanical design

Structural analysis

Cable harness routing

Material selection

Education

Mechanical Engineering Degree

Tools

SolidWorks

Job description

Calnetix Technologies, LLC in Southern California is seeking a Mechanical Engineer with a strong hands-on background to lead from design through production release. You will apply engineering fundamentals to develop high‑performance mechanical systems, with emphasis on robustness for aerospace/defense contexts.

The role focuses on thermal management, electronics packaging, and electro‑mechanical integration using SolidWorks, GD&T, and robust calculations.