Mechanical Engineer

About Optopax

Optopax is a Silicon Valley–based design and OEM manufacturing company delivering integrated AI imaging solutions—from concept through production. We specialize in AI-enabled camera modules, precision optics spanning UV to LWIR, and custom embedded systems for robotics, industrial vision, submersible imaging, biomedical devices, AR/VR, and optical computing.

We are a small, highly technical team headquartered in San Jose, California, with a global team, building real hardware that ships.

About the Role

We are looking for a hands-on Mechanical Engineer who can take loosely defined requirements from optics and test teams and turn them into robust, manufacturable systems.

What You'll Do

• Design integrated electro-mechanical and opto-mechanical systems for camera modules, optical test fixtures, and precision assemblies
• Translate specifications from optics, test, and embedded teams into manufacturable hardware designs
• Create detailed 3D CAD models and production drawings (Fusion 360 preferred)
• Apply DFM/DFA, GD&T, and tolerance stack-ups to ensure repeatable builds
• Design and integrate multi-axis motion systems (linear stages, actuators, motors, encoders)
• Build and evaluate prototypes using 3D printing, CNC machining, and sheet-metal fabrication
• Assemble and test precision mechanical and optical assemblies, including camera modules and fixtures
• Develop and run test setups, collect data, and document results
• Source components and work directly with vendors, machine shops, and optical suppliers
• Support transition from prototype to low-volume and production builds
• Collaborate closely with optics, firmware, electronics, and manufacturing teams

What You'll Bring

Required

• Degree in Mechanical Engineering, Mechatronics, or a closely related field with 1-2+ years of professional experience
• Strong CAD skills (Fusion 360 preferred)
• Strong experience with DFM/DFA, GD&T, and tolerance analysis
• Proven hands-on prototyping and fabrication experience
• (CNC/manual machining, 3D printing, sheet metal, fixtures, jigs)
• Experience integrating electro-mechanical and motion systems
• Comfortable working with small, precision mechanical and optical assemblies
• Experience using and integrating microcontrollers and SBCs into testing platforms
• Software experience (Python and/or C++) for test or automation
• Lab-oriented mindset with attention to detail and practical problem solving
• Clear written and verbal communication skills
• Proficiency in Mandarin is preferred to facilitate effective communication with China and Taiwan suppliers

Nice to Have

• Familiarity with common optical and motion vendors (e.g., Thorlabs, Edmund Optics, Newport)
• Experience designing optical test fixtures or camera test systems
• Control system integration (PLCs, motion controllers, sensors)
• FEA experience (static, thermal, modal, or nonlinear)
• Experience working with external manufacturers and machine shops
• Exposure to early-stage product development and rapid iteration cycles

Why Optopax

• Work at the intersection of optics, AI, and embedded systems
• Own hardware from concept through manufacturing
• See your designs quickly turn into working systems used in real-world applications
• Join a small, high-impact team where engineering decisions matter