ASIC Physical Design Engineer, Principal

Own physical implementation of Positron's AI accelerators from floorplanning through tapeout. Lead implementation methodology while partnering with RTL, synthesis, DFT, package, and backend design services to achieve world-class PPA.

Own floorplanning, macro placement, and power planning across Positron's AI accelerator designs.

Drive clock tree synthesis, place and route, and routing optimization through to timing closure.

Own signal integrity, IR/EM closure, ECO implementation, and metal fill to deliver signoff-quality results.

Own tapeout signoff for all physical implementation deliverables.

Develop methodology for power grids, power/ground tiles, and bump planning.

Build congestion analysis and wire estimation approaches to support early floorplan decisions.

Define partitioning and hierarchical implementation strategies for complex, multi-block designs.

Own Innovus-based implementation flows end to end.

Apply hands-on expertise across Innovus, ICC2, Tempus, PrimeTime, Voltus, RedHawk, and Calibre.

Drive closure across timing, power, area, congestion, DRC, LVS, EM, IR, and yield.

Partner closely with backend design services to align on implementation strategy and execution.

Review implementation quality and lead implementation reviews across the team.

Apply AI-enabled techniques for automated QoR analysis, congestion prediction, routing prediction, and floorplan optimization.

While this role is currently posted at a specific level, we are a growth-oriented organization and are open to hiring at a more senior level for the right candidate. Please note that this job description serves as a focused but generalized overview of the role; specific responsibilities and impact expectations will be tailored to the experience and seniority of the final hire.

Success in this role looks like predictable implementation execution and excellent QoR across Positron's designs, paired with reduced schedule risk and a scalable implementation methodology that can support the company's growing portfolio of AI accelerators.

Shape the physical implementation methodology for a new class of AI inference accelerators from the ground up.

Work at the cutting edge of advanced-node design, tackling some of the hardest problems in power, timing, and signal integrity for frontier AI workloads.

Fully company-paid medical, dental, and vision insurance for you and your dependents

Company-paid life and disability coverage, with voluntary options to add more

Supplemental hospital, critical illness, and accident coverage available

Unlimited paid time off, so you can truly unplug and recharge

13 paid company holidays

Remote-first culture with a company-provided computer and home office setup

This position is open to candidates currently authorized to work in the U.S. We cannot provide new visa sponsorship for this role but are open to facilitating H-1B visa transfers for eligible candidates.

Equal Opportunity Employer. If you're excited about the role but don't meet every bullet, we'd still love to hear from you.

Positron AI is building next-generation AI inference accelerators designed from the ground up for low-latency, high-throughput large language model inference. Our first-generation ASIC, Asimov, is a cutting-edge accelerator targeting frontier AI workloads, with additional generations already underway.