Sr. Staff Engineer, Photonics Design

Ayar Labs • San Jose, CA

1d • $180,000 - $240,000 • Onsite

About The Position

Ayar Labs is shattering AI data bottlenecks by moving data at the speed of light. As pioneers of co-packaged optics (CPO), we are using light instead of electricity to move data faster, further, and with a fraction of the energy needed to fuel the explosive growth of AI models. Backed by industry giants like NVIDIA, AMD and Intel and manufactured in partnership with the world’s leading semiconductor ecosystem, Ayar Labs’ co-packaged optics solution is key to unleashing next-generation AI scale-up architectures. We're looking for a Sr. Staff Engineer to own the photonic device layer of that solution. You will define what our components need to achieve, determine what's physically achievable from leading-edge processes, and drive the device roadmap from simulation through high-volume manufacturing. This is a role for someone who thrives on hard, under-specified problems — where the right answer isn't in the literature and the process isn't quite doing what you need it to do. You'll engage directly with partners across the Taiwan semiconductor ecosystem — not just designing to the PDK you're given, but influencing what that process can achieve. And you'll shape the design and analysis infrastructure your team depends on: the simulation automation, layout flows, and verification frameworks are yours to architect, not inherit.

Requirements

• B.S. or equivalent experience in Electrical Engineering, Optical Engineering, or related field
• 6+ years of commercial experience in silicon photonics or integrated photonic device design
• Deep understanding of photonic device physics: electro-optic modulators, photodetectors, gratings, couplers, micro-ring resonators
• Proficiency with simulation and design tools for passive and active optical devices (e.g., FDTD, charge transport simulation)
• Strong Python skills; demonstrated experience writing well-structured code and extending a shared codebase as part of a team
• Track record of taking opto-electronic components from design through manufacturing: design, debug, and validation
• Track record of solving problems that don't have obvious solutions — in device physics, process integration, or system-level tradeoffs

Nice To Haves

• M.S. or PhD with integrated photonics focus
• Experience engaging directly with foundry process teams on process development or customization beyond standard PDK offerings
• High-speed design and RF test experience: VNA, BERT, wafer-level screening
• Statistical analysis of process and test data; DOE methods
• Familiarity with co-packaged optics: system requirements, CPO architectures, and the industry transition from pluggable to on-board optics
• Experience with electro-optic reliability modeling and testing
• Demonstrated use of AI tools to achieve meaningful productivity gains in design or analysis workflows — e.g., device optimization, AI-assisted code development

Responsibilities

• Device roadmap. Own the device roadmap for integrated photonic components: set performance targets, assess process feasibility, and drive development from simulation through production.
• Foundry partnership. Engage directly with the Taiwan semiconductor ecosystem to push process capability in service of product requirements — not just consuming the PDK, but influencing what it does.
• Design infrastructure. Architect and extend the team's design and analysis tools: simulation automation, layout flows, verification frameworks, and custom code the broader team depends on.
• Debug and yield. Lead device-level debug, failure analysis, and yield investigation across development and production runs.
• Cross-functional co-design. Drive component performance in close collaboration with system, laser, packaging, firmware, and circuit design teams — the device layer connects all of them.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: High school or GED