Lead STA signoff processes for complex ASIC designs, defining methodologies and collaborating with design teams to ensure timing closure and optimal performance.
Join the leading chiplet startup! As an Eliyan Synthesis and STA lead, you will be working at a fast-paced early-stage startup creating technologies that fuel tomorrow’s chiplet based systems with best-in-class power, area, manufacturability, and design flexibility. You will be responsible for putting together synthesis and STA methodologies for best-in-class PHYs and Controllers. You will work with a cross-functional team of experts that operate from first principles, innovate and push the envelope to create high-volume and high-performance manufacturable products. We offer a fun work environment with excellent benefits.
Responsibilities:
- Own Subsystem and full-chip STA signoff across all functional and test modes with complete MMMC coverage.
- Define and drive a scalable hierarchical constraints & flat Constraint methodology, including:
- ----Push down constraints, timing budgets, interface constraints (I/O delays), generated clocks, exceptions, case analysis, and mode definitions.
- ----Merging IP constraints, validated interface assumptions, updated clock/latency intent, propagated exceptions, and closure feedback to top-level signoff.
- Lead functional ECO strategy and execution:
- ----Root-cause critical paths, select optimal fixes on clock ad data, and deliver ECO-ready recommendations to implementation teams.
- ----Champion high-throughput ECO / PnR iteration methodology to reduce closure cycle time.
- Debug and resolve complex timing/constraint issues during implementation.
- Partner closely with RTL/design/DFT/physical design teams to align constraints intent, clocking architecture, and closure plan across milestones (place/CTS/route/signoff).
- Define MMMC corner strategy by stage (synthesis, PnR, signoff) and ensure consistent signoff criteria and reporting.
- Establish and maintain STA signoff collateral: signoff checklist / signoff document per foundry/node, standardized reports, and closure metrics.
- Build automation and dashboards for STA productivity: run frameworks, regression, constraints QA, PPA trending, and signoff readiness indicators.
- Support low-power timing methodology when applicable (UPF/CPF impacts: level shifters, isolation, retention, power states).
Qualifications (Minimum Required):
- 8–12 years of hands-on experience in STA and timing closure for complex ASIC/SoC designs (block + top level).
- Strong expertise in timing constraints SDC creation, validation, and maintenance across functional + scan/test modes.
- Proven track record as a functional ECO expert—able to drive closure with actionable, implementation-friendly ECO guidance.
- Strong understanding of deep sub-micron timing effects and signoff considerations: variation/OCV, SI/noise, crosstalk, and margining concepts.
- Proficient in Tcl and at least one scripting language for flow automation and reporting.
- Ability to work cross-functionally with RTL, DFT, PD/CTS, and signoff teams; strong written and verbal communication.
Preferred (Strong Plus):
- Advanced-node experience with TSMC 3nm/2nm (N3/N2) and/or Samsung 3nm/2nm technologies.
- Working understanding of library characterization fundamentals and timing model interpretation/debug (timing arcs, constraints arcs, NLDM/CCS concepts, LVF/variation concepts as relevant).
- Experience building reusable signoff methodologies across multiple blocks/chips, including constraints QA gates and signoff dashboards.
Top Skills
Samsung 3Nm
Sdc
Sta
Tcl
Tsmc 3Nm
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