Lumilens
AI supercomputing
PrincipalEngineerSiliconPhotonics
Neural analysis suggests this role is
optimal for Lead candidates.
“Principal Engineer Silicon Photonics at Lumilens. Skills: Silicon Photonics, Packaged Optics, Product Definition, Cross-functional Execution. Lead product definition for optical interconnects. Serve as technical interface with customers, partners, suppliers”
What You'll Achieve.
Shape product direction; Meet product objectives; Deliver robust performance; Bring products to life; Make a massive impact; Execute vision
Industry & Context.
Solve hardest challenges in optics, systems, and scale; Synthesize customer requirements, technical constraints, business priorities
Hands-on in a lab environment
What They're Looking For.
Must Have
Principal-level technical leadership role developing and delivering photonics-based products, Deep expertise in silicon photonics design, performance characteristics, and trade-offs, Direct experience with packaged silicon photonics or optical engine development, including packaging trade-offs, integration constraints, and manufacturing considerations, Demonstrated ability to perform optical link budget analysis using simulation and modeling, Experience defining product requirements and driving execution across hardware, firmware, software, validation, and manufacturing teams, Experience defining test plans (EVT, DVT, SVT) and test methodologies for optical systems, Ability to work effectively and drive decisions within a fast-paced, startup environment, Must be hands-on in a lab environment
Nice to Have
Experience with test automation frameworks and scripting, Direct experience working with hyperscale data center customers or suppliers on packaged optics, co-packaged optics, or optical I/O solutions, Experience with fiber attach technologies, optical assembly processes, and package-level integration challenges for silicon photonics products
What You'll Do.
Lead product definition for optical interconnects
Serve as technical interface with customers
Drive cross-functional alignment on product priorities
Perform critical link analysis using simulation and modeling
Translate system goals into silicon photonics requirements
Guide development of packaged silicon photonics solutions
Define complete testing strategy from EVT to SVT
Be hands-on in the lab
How You'll Work.
Team & Collaboration
Drive cross-functional alignment; Work closely with customers, contract manufacturers, suppliers; Align internal engineering teams, external partners, stakeholders; Work alongside world-class engineers; Collaborate in a multi-disciplinary, geographically diverse team environment; Work with cross-functional teams
Communication Scope
Presenting technical roadmap to executives
Process & Methodology
Drive cross-functional execution, Manage product milestones and deliverables, Develop execution plans
Full Job Description
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. Lumilens is 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. 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 optics, systems, and scale. 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 Principal Engineer, Silicon Photonics to join our rapidly growing team. This is a high-impact leadership role for someone who can shape product direction, translate customer needs into clear technical requirements, and drive cross-functional execution from concept through validation. The ideal candidate brings deep experience with packaged silicon photonics, including optical engine integration, assembly flows, and manufacturing considerations for next-generation optical interconnect products. The successful candidate will work closely with customers, contract manufacturers, suppliers, and internal development teams to meet product objectives while instilling a culture of quality, accountability, and continuous improvement. What You'll Do: - Lead Product Definition: Own and drive product requirements for next-generation optical interconnects, balancing performance, manufacturability, cost, power, and time-to-market. - Be the Customer and Product Voice: Serve as the primary technical interface with customers
Applying for this Principal Engineer Silicon Photonics role?
Most applicants get filtered before a human reads their resume. See if yours makes the cut.
How to Apply on Ashby
- Ashby is a fast modern ATS — most applications take under 3 minutes.
- The resume parser is strong; verify parsed experience dates and job titles.
- Custom screening questions are often scored algorithmically — answer completely.
- Location field affects geo-based screening; use your actual metro area.
ANONYMOUS · UNFILTERED
What do employees actually say about Lumilens?
Real rants from real employees. Read before you apply.