Senior Engineer
static timing analysisphysical designtiming closureasic designclock tree synthesissta toolsplace and routescriptingconstraint managementeco flows
Role
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)
1. 30-min intro with HR (role/context)
2. First Technical deep dive
3. Second Technical Deep Dive
4. (Optional) Third Technical Deep Dive
5. Systems/product conversation with management
Your CV
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