Physical Design Lead
- Location
- San Francisco
- Work mode
- On-site
- Employment type
- Full-time
About the job
Phinity is an AI research lab focused on solving chip design. The bottleneck to AGI is compute, and we enable AI agents to tape-out chips autonomously, from architecture to post-silicon. We are building RL environments, agent infrastructure, and evaluation systems to accomplish this. Our team brings together deep AI and silicon expertise, including leaders and executives from top chip companies, post-training chip-design models at NVIDIA, AI for formal verification research, previous exits, and over 10 years of experience building chips at NVIDIA, Intel, Mediatek, and others.
We are hiring a Physical Design Lead.
You will be responsible for:
- Leading PD flows and optimization of block-level to full-chip level optimizations
- Define Synthesis to layout flows, including PDN, clock-trees, PVT corners and custom cell definitions. Responsible for implementing characterization flows for custom cells and memory blocks.
- Responsible for executing IP and Fullchip design optimizations working with PD engineers. Identify areas of optimization in design utilization, power grid and clock network within the design.
- Responsible for delivering tapeout ready design optimized for the target PPA, and utilizing the in-house capability on prompt-to-GDS.
Why Phinity
- Work directly with the founders to shape the strategy and growth of an ambitious AI research lab
- Take ownership of high-impact initiatives across business strategy, partnerships, and company operations
- Collaborate with leading AI researchers and hardware experts at the frontier of autonomous chip design
Benefits include
- Health insurance
- Retirement plans
- Unlimited PTO
- Paid parental leave
- Lunch and dinner provided in-office
From Phinity Labs's careers page (Ashby), checked 29 Oct 2026.
How to apply
- Select Apply on jobs.ashbyhq.com. It opens Phinity Labs's own application form in a new tab, run on Ashby.
- Fill in the form and upload your résumé there. Jobiwork never sees your application.
- Phinity Labs will reply to you directly. No real employer asks you for money to apply.
Posted 8 Oct 2026 · checked 29 Oct 2026 · Report this job