At Lumilens, we are building the critical photonics infrastructure powering tomorrow’s AI supercomputing. From chip-to-chip optical interconnects to scalable photonic engines, Lumilens is unlocking a new era of computing—faster, cooler, and massively more efficient.
We’re a well-funded startup backed by Mayfield and led by veterans who have built and scaled transformative technologies in the industry. At Lumilens, we’re developing high-speed photonics products designed to power the future of AI infrastructure and high-performance computing.
This is a ground-floor opportunity to rethink the optical layer from the silicon up. You’ll collaborate with a world-class team of engineers tackling the hardest automation and manufacturing challenges in photonics. If you’re looking for mission, momentum, and the chance to make an outsized impact, join us on the rocket ship. We’re just getting started.
We are seeking a Staff Mechanical Automation Engineer to join our Manufacturing Operations team. In this high-ownership role, you will lead the mechanical design, analysis, and qualification of automation systems, tooling, and fixtures that support high-volume, high-reliability production of optical and electro-mechanical assemblies. You will partner cross-functionally with process, test, quality, and product engineering teams to translate requirements into manufacturable, testable, and scalable production solutions. This is a senior technical position with significant influence on manufacturing and tooling strategy at Lumilens.
Lead mechanical design and DFM reviews for optical and opto-mechanical assemblies, ensuring designs are optimized for high-yield, high-volume manufacturing
Own tolerance analysis (worst-case and statistical) for automated assembly, handling, and test processes to ensure process capability and first-pass yield
Perform FEA to validate structural integrity, stiffness, vibration response, and durability of fixtures, jigs, and automation hardware
Develop thermal models of assembly and test processes to predict and mitigate thermal drift, expansion mismatch, and heat-related failure modes
Design, prototype, and qualify automated and semi-automated jigs and fixtures, from concept through production launch and sustaining support
Design mechanical structures and fixturing for ICT and functional test compatibility, including probe access, test point placement, and board-to-fixture alignment
Drive root-cause investigations for mechanical and fixture-related yield or reliability issues, leading corrective and preventive actions
Collaborate with Process, Automation, Test, and Quality Engineering teams to define equipment and tooling requirements for NPI and sustaining programs
Create and maintain design documentation, drawings, FMEAs, and validation reports to support design reviews and manufacturing readiness
Mentor junior and mid-level engineers, providing technical leadership across automation and tooling initiatives
Hands-on DFM experience with optical or opto-mechanical assemblies (e.g., transceivers, fiber interconnects, lenses/alignment structures), including tolerancing for optical alignment, coupling loss, and contamination control
Proficiency in worst-case and/or statistical (Monte Carlo, RSS) tolerance stack-up analysis for automation
Practical expertise applying FEA (ANSYS, Abaqus, SolidWorks Simulation) to structural, vibration, and fatigue analysis of fixtures and mechanical assemblies
Ability to model and predict thermal behavior during assembly (reflow, bonding, curing) and test, and to design fixtures that manage heat generation, dissipation, and thermal drift
Demonstrated experience designing, building, and qualifying jigs and fixtures for automated manufacturing from concept through production
Experience designing mechanical structures and fixturing compatible with ICT requirements, including probe access and alignment
Bachelor’s or Master’s degree in Mechanical Engineering, Mechatronics, or related field, with 8+ years experience in manufacturing/automation engineering (or equivalent)
Proficiency with 3D CAD tools (SolidWorks, Creo, or equivalent) and GD&T
Strong understanding of manufacturing processes relevant to electro-optical/electro-mechanical products (SMT, adhesive bonding, press-fit, laser welding, etc.)
Demonstrated success working cross-functionally in a fast-paced manufacturing environment
Experience in optical transceiver, photonics, or fiber-optic interconnect manufacturing (OSFP, QSFP, or similar form factors)
Experience with robotics or motion-control integration for automated assembly and test
Familiarity with SPC and Design for Six Sigma (DFSS)
Experience with panelized PCBA processes and panel-level fixture design
Working knowledge of GR&R, MSA, and process capability (Cpk) studies
Competitive compensation and equity
Medical, dental, and vision coverage
Flexible work environment and generous PTO
Work at the forefront of photonics and AI hardware alongside a world-class team
Lumilens is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.
Lumilens addresses the red hot market for AI data center infrastructure by designing, manufacturing and selling photonic interconnect solutions. We design and use custom robotics + AI in our factories to more efficiently build our products.
Lumilens is backed by top-tier venture capital investors including Mayfield and Spark Capital.
