CPU Custom Library Cell Design (IC)

About the role

Nuvacore is building ground-up high performance, low-power CPU for next-generation compute workloads. As a member of the CPU-specific custom circuit design team, you will enable the design to achieve the target PPA specifications for the product. As a Custom Library Circuit Engineer, you will participate in the following:

Responsibilities

• Design and characterize library cells including flip-flops, clock-gating cells, level shifters, and special purpose AOI cells to optimize PPA at advanced process nodes.
• Own end-to-end library IP closure: schematic and layout through DRC/LVS/antenna, parasitic extraction, and characterization.
• Partner with Foundry/PDK, CAD, Physical Design, and DFT teams to benchmark new process technology, validate IP on test chips, and co-optimize cells for downstream design PPA.
• Define and drive adoption of Tools, Flows, and Methodology — including characterization automation and compiler QA — to raise design efficiency and set team-wide best practices.

Qualifications

• Hold a BS or MS degree with (ideally) 12+ years of experience in standard cell and/or custom memory circuit design.
• Hands-on transistor-level design experience with static circuits and state-retaining elements (latches, flops), as well as custom logic gates at advanced CMOS nodes.
• Proficient with industry-standard EDA tools for schematic, layout, extraction, and characterization, applied to custom cell and memory design workflows.
• Experience providing feedback to foundry partners to help improve PPA, yield, and other important qualities in future revisions of the PDK.
• Well-versed in STA and Liberty/CCS model correlation, including timing and power characterization for both Functional and DFT (Design for Test) modes.
• Strong communication and collaboration skills, comfortable working directly with foundry, CAD, and physical design partner teams.

Requirements

• Experience across the full design flow of a custom circuit — cell/memory architecture, circuit design, compiler automation, characterization, and timing/model generation.
• Experience translating PDK device characteristics into circuit decisions.
• Proven PPA-focused execution for standard cells, including architecture trade-offs, critical-path modeling, full-cut analysis, and Monte Carlo variation studies.
• Experience using Agentic AI tools for productivity and automation.