Senior DFT Timing Signoff Engineer (STA)

TL;DR

Senior DFT Timing Signoff Engineer (STA): Owning DFT-mode timing constraints and PrimeTime STA signoff for next-generation AI processors with an accent on Tessent DFT architecture including SSN, IJTAG/HTAP/TAPLink, and MBIST/BISR. Focus on establishing constraints hygiene, debugging integration issues, driving backend closure, and automating flows for first-pass silicon success.

Location: US, California, Folsom (hybrid work model: split time on-site at hirify.global site and off-site)

Salary: $164,470.00-269,100.00

Company

hirify.global designs and manufactures silicon products for data centers, AI-accelerated systems, HPC, and general-purpose compute.

What you will do

• Own definition, generation, validation, and maintenance of DFT timing constraints (SDC) in PrimeTime for scan, JTAG/IJTAG, and memory BIST modes.
• Perform PrimeTime STA signoff for DFT modes at block and top levels across corners, ensuring coverage and exception governance.
• Enforce constraints hygiene standards including mode separation, audits, linting, and regressions.
• Collaborate with DFT architecture/implementation on SSN, IJTAG, HTAP/TAPLink, MBIST integration and translate into timing constraints.
• Debug DFT insertion issues in RTL/gate-level netlists and drive timing convergence with PD/CTS/PnR teams via ECOs.
• Automate DFT/STA flows (Tcl/Python) and develop signoff checklists/reporting for stakeholders.

Requirements

• Bachelor's +8 years or Master's +6 years in Electrical/Computer Engineering
• 6+ years DFT/STA for complex SoCs with PrimeTime signoff and constraints ownership
• Tessent DFT concepts: SSN, IJTAG/HTAP/TAPLink, MBIST/BISR
• CDC/RDC fundamentals, Verilog/SystemVerilog for netlist debugging
• Tcl required; Python/shell preferred

Nice to have

• Hands-on Tessent flow experience in hierarchical SoCs
• Signoff hygiene for scan/MBIST/JTAG in MMMC environments
• Quality checks: lint, CDC/RDC, LEC, Spyglass DFT
• Cross-team closure under aggressive schedules

Culture & Benefits

• Competitive pay, stock bonuses, health, retirement, vacation benefits
• Hybrid work model
• Shift 1 (United States of America)