Senior Engineer – Backend
vor 4 Wochen
Location: Zürich, Switzerland Seniority: 5+ years (physical design with a timing focus) Own timing closure and sign-off for complex IP and SoC blocks that integrate our full-custom ComputeRAM® macros. You will drive Static Timing Analysis across corners and modes, shape clean constraints, partner closely with synthesis, place-and-route, and clock-tree teams, and lead ECO loops to convergence. Your work ensures robust clocks, predictable closure, and high-quality sign-off on modern nodes. You will work closely with our full-custom team to integrate our custom IPs into the traditional digital backend flow. What you’ll do - Build, refine, and maintain timing constraints for blocks and top-level designs, including clocks, generated clocks, I/O timing, and exceptions. - Run STA across all relevant corners and modes, close setup and hold, and manage variation and correlation from synthesis to P&R to sign-off. - Guide clock-tree strategy and debugging with clear targets for skew, jitter, and latency; collaborate with P&R on placement, buffering, and routing choices that affect timing. - Lead timing and functional ECOs, track impacts, and land repeatable closure with minimal overhead. - Support gate-level verification needs with timing data, and ensure timing/constraints remain consistent with sign-off views. - Automate timing checks, report generation, and regressions using scripting, and contribute checklists and documentation that others can reuse. Outcomes (first 18 months) - Clean timing closure at block and top level across all defined corners and modes, with stable constraints and traceable waivers. - Documented timing methodology adopted by the team, with measurable reductions in ECO cycles and predictable time-to-close. - Correlated results between synthesis, P&R, and sign-off, demonstrated by repeatable reports and post-route margins on critical paths. Requirements - 5+ years in ASIC physical design with a strong emphasis on timing closure and sign-off. - Familiarity with STA tools and flows, including clocking, cross-domain concerns, multi-clock designs, and hierarchical closure. - Hands-on experience working with synthesis and place-and-route to drive timing-aware decisions and guide ECOs to closure. - Scripting ability to automate timing analysis and reporting. - A collaborative approach with front-end, backend, and verification teams. Nice to have - Experience with power-aware and low-power backend. - Background in scan and test timing, and awareness of verification and physical verification interactions with timing. - Exposure to advanced nodes and hierarchical sign-off on large designs. - Context working on accelerators or memory-adjacent designs where timing and integration are tightly coupled. Apply Send your CV and a short note (2–3 paragraphs on a design you owned, your toughest bug & how you solved it, an intro on what you like to do and how you see yourself as an engineer) Interview flow (indicative) - 30-min intro with HR (role/context) - Second Technical Deep Dive - (Optional) Third Technical Deep Dive - Systems/product conversation with management #J-18808-Ljbffr
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