Physical Design Engineer - Synth, Senior

Positron AI builds hardware and software for energy-efficient generative-AI and Transformer-model inference.

Series CRecently funded
Reno, Nevada, United States
About Positron AI

Reno-based AI-infrastructure company whose currently shipping Atlas inference server is complemented by planned Asimov custom accelerator silicon and Titan inference systems.

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Skills

Candidate Availability

Required and preferred rules are kept separate and reflect the wording in the original posting.

About the Role

You will own synthesis, timing convergence and implementation readiness for key partitions across an AI accelerator roadmap. You will turn high-quality RTL into implementation-ready netlists, develop and maintain timing constraints, and drive physical-aware optimization with RTL designers and backend partners. You will also help strengthen and scale synthesis methodology and apply AI tools to improve timing analysis and automation.

Requirements

  • 8+ years of ASIC implementation experience, including at least two successful tapeouts
  • Strong hands-on proficiency in synthesis and flow development
  • Proven experience closing timing on complex, multi-million-gate designs
  • Deep knowledge of Cadence Genus and/or Synopsys Design Compiler
  • Strong SDC expertise including MMMC environments
  • Solid grasp of RTL design principles and implementation-friendly coding
  • Hands-on experience with advanced process nodes (7nm and below preferred)
  • Strong Tcl and Python scripting ability
  • Excellent debugging and root-cause analysis skills
  • Authorized to work in the U.S.; no new visa sponsorship (H-1B transfers considered)

Responsibilities

  • Own synthesis for assigned partitions and subsystems, delivering clean, high-QoR netlists on schedule
  • Improve synthesis flows including constraint development, timing budgeting, QoR optimization, incremental synthesis and hierarchical implementation
  • Help define and apply signoff criteria for synthesis deliverables
  • Run synthesis using Cadence Genus and Synopsys Design Compiler or equivalent
  • Develop and maintain SDC constraints, clock definitions, false paths, multicycle paths, generated clocks and MMMC environments
  • Track and improve synthesis QoR for your blocks
  • Drive logical timing closure across frequency, area, power, congestion and wireability
  • Perform root-cause analysis of timing bottlenecks and contribute to chip-level timing budgets
  • Resolve timing risks with architecture and RTL teams before physical implementation
  • Partner with backend engineers on physical-aware synthesis, retiming, register balancing, pipeline optimization and logic restructuring
  • Give RTL teams actionable feedback for implementation-friendly designs
  • Collaborate with architecture, RTL, verification, physical design, DFT, IP providers and design services
  • Review QoR, timing and area reports with external implementation partners
  • Apply AI tools to timing analysis, QoR regression, constraint generation, debug, report analysis and automation

Benefits

  • Fully company-paid medical, dental and vision insurance for you and dependents
  • Company-paid life and disability coverage
  • Supplemental hospital, critical illness and accident coverage available
  • Unlimited paid time off
  • 13 paid company holidays
  • Remote-first culture with company-provided computer and home office setup
  • Equity
  • 401(k) with company matching from day one
Physical Design Engineer - Synth, Senior at Positron AI | JobStash