Senior Engineer, Mechanical Systems & Packaging

ABOUT LUMILENS

At Lumilens we are building the critical photonics infrastructure that powers 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’ve built and scaled some of the most transformative technologies in the industry. At Lumilens, we’re developing high-speed photonics products purpose-built to power the future of AI infrastructure and high-performance computing.

This isn’t incremental innovation, it’s a ground-floor opportunity to rethink the optical layer from the silicon up. You’ll work alongside a team of world-class engineers solving some of the hardest challenges in scaling optical systems. Every line of code, every design decision, every breakthrough you help deliver will shape the infrastructure of tomorrow.

If you're looking for mission, momentum, and the chance to make an outsized impact, jump on the rocket ship. We’re just getting started.

POSITION OVERVIEW

We are seeking a Senior Mechanical Engineer to lead the design and development of mechanical housings, packaging, and thermal solutions for advanced photonic interconnects. These interconnects are critical to enabling next generation data center architectures, supporting the exponential growth of cloud, AI, and high‑performance computing workloads. The role requires expertise in precision mechanical design, thermal management, and manufacturability for high‑volume deployment.

DUTIES / RESPONSIBILITIES

• Mechanical Design & Packaging
• Lead the design of housings and enclosures for integrated photonic modules and transceivers, like OSFP.
• Develop 3D CAD models, detailed drawings, and tolerance stack‑ups for manufacturability and reliability.
• Ensure compliance with industry standards for photonic / electrical interconnects and interoperability.
• Cross‑disciplinary Collaboration
• Partner with optical and electrical engineers to co‑optimize designs for performance and reliability.
• Work with supply chain and manufacturing teams to ensure DFM / DFT and cost‑effective scaling.
• Engage with vendors and fabricators to validate feasibility of custom housings and interconnect solutions.
• Prototyping & Validation
• Drive prototype builds, lab testing, and qualification of photonic interconnect housings.
• Support root‑cause analysis and continuous improvement for field reliability and yield.

All qualified applicants will receive consideration for employment without regard to race, color, religion, religious creed, sex, national origin, ancestry, age, physical or mental disability, medical condition, genetic information, military and veteran status, marital status, pregnancy, gender, gender expression, gender identity, sexual orientation, or any other characteristic protected by local law, regulation, or ordinance.