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RosaicLabs

Custom x86 chips using Atom RTL

AI Accelerator Physical Design Engineer

Silicon & ASIC DesignConfirmed live in the last 24 hours
Full-time$125k - $250k /yr

About the Job

Requirements

  • A Bachelor's or Master's degree in Electrical Engineering, Computer Engineering, or a related field.
  • At least 5 years of industry experience in high-performance, low-power physical design.
  • Hands-on experience taking complex digital designs through synthesis, place-and-route, and signoff at advanced process nodes.
  • Strong understanding of timing closure, clocking, and static timing analysis, including OCV and multi-corner multi-mode analysis.
  • Experience with power integrity, including power grid design, IR drop, and electromigration.
  • Experience with physical verification (DRC/LVS) and fixing violations.
  • Familiarity with accelerator or compute-array architectures, such as systolic arrays, SIMD/vector engines, and large on-chip memories.
  • Proficiency with industry-standard electronic design automation tools.
  • Scripting skills in Tcl, Python, or Perl for flow automation.
  • Strong debugging skills and the ability to work with RTL, architecture, and DFT teams.

Responsibilities

  • Own physical implementation of accelerator blocks and top level, including synthesis, floorplanning, power planning, placement, clock tree synthesis, and routing.
  • Develop floorplans for repeated compute tiles, large SRAM arrays, and high-bandwidth data movement while balancing congestion, wire length, and utilization.
  • Close timing, power, and area targets, including optimization of datapath-heavy and high-fanout structures.
  • Manage power delivery and density through power grid design, IR-drop and electromigration analysis, and thermal-aware implementation.
  • Implement low-power techniques such as clock gating, power gating, multi-Vt, and multi-voltage domains.
  • Run static timing analysis, signal-integrity analysis, and physical verification (DRC/LVS) signoff across corners and modes.
  • Partition and implement hierarchical designs, including budgeting and integration of replicated blocks.
  • Work with architecture, RTL, DFT, and verification teams to co-optimize designs for physical implementability.
  • Develop and maintain automation for flows, regressions, and QoR tracking.
  • Support silicon bring-up and correlate post-silicon results with pre-silicon predictions.

About the Company

RosaicLabs

Custom x86 chips using Atom RTL

RosaicLabs designs customized processors by licensing Intel’s Atom technology, including RTL, and integrating an Intel x86 core into its own chip designs. The company, based in Santa Clara, operates in stealth mode and aims to build specialized SoCs for targeted workloads, especially in edge and mobile scenarios where energy efficiency matters. The business model hinges on a strategic agreement with Intel that grants access to core IP and RTL, enabling Rosaic to tailor chips for specific applications rather than using off-the-shelf processors. This arrangement also serves as a potential pathway for Intel to monetize its x86 IP and attract new customers for its foundry services. Rosaic’s goal is to create custom silicon platforms that leverage the established x86 software ecosystem while delivering low-power, efficient computing at the edge.

Company size
1-10
Company stage
Not listed
Total funding
Not listed
Headquarters
Not listed
Founded
Not listed

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