Cadence Innovus Timing Closure Engineer Jobs: Browse PnR Roles

Driving every path to positive slack is the whole assignment. A Cadence Innovus timing closure engineer pushes placement, clock trees, routing, and a long tail of ECOs until worst negative slack finally turns positive across every corner and mode.

The loop runs through timeDesign for analysis and the ECO commands, ecoRoute, ecoAddCells, and ecoRemoveCells, for the surgical fixes close to tapeout. CCopt, the clock-concurrent optimization engine, builds the clock tree while placement is still moving, so skew and latency shape where cells land instead of getting patched in afterward. For signoff-grade numbers without leaving the tool, engineers lean on the Innovus-to-Tempus integrated flow rather than shuttling timing reports between separate runs.

Companies feel timing pressure hardest where clock speeds are aggressive and the tapeout date will not move. Nvidia and AMD staff Innovus closure engineers for GPU and data-center parts, Qualcomm and Apple for mobile SoCs, and Marvell for networking and storage silicon. AI accelerator startups hire them too, usually the ones racing a first chip to a fixed schedule.

If you are sizing up the market, the timing closure engineer positions board covers the specialty across tools, while the Cadence Innovus place and route openings cover the full implementation scope from floorplan through route.

Timing closure and static timing analysis run together on most teams, so the STA engineer roles overlap heavily with this one. Strong constraint and signoff skills tend to carry you between the two without much friction.

Tool depth is what hiring managers actually pay for. One closed tapeout in Innovus, with the WNS and TNS you drove and the ECO moves that got you there, says more than a command list ever will. CDNLive is where the Cadence physical design crowd swaps those moves and previews what the next release breaks or fixes.

Pay scales with process node, seniority, and metro. The salary guide for semiconductor jobs lays out ranges by role and location so an offer does not catch you flat.

Innovus timing roles concentrate at companies where hitting timing at tapeout is the gating milestone, so weigh a team's schedule pressure before you sign. Save a search on semidesignjobs.com and new Innovus openings will land in your inbox as they post.

FAQ

Which Innovus flows are built for timing closure?

Innovus closes timing through incremental placement optimization with optDesign, targeted resizing and buffering through the ECO commands, and routing ECOs through ecoRoute for wire-level fixes. The Innovus-to-Tempus integrated signoff flow runs timing at signoff accuracy inside the tool, so ECOs get applied and re-checked in one place instead of across separate runs.

What does CCopt do for timing?

CCopt, or Clock Concurrent Optimization, synthesizes the clock tree and optimizes placement at the same time, so the placer respects clock latency and skew as it works. On high-frequency designs, that concurrent approach usually beats a sequential CTS-then-place flow, because clock-network delay eats a real share of the timing budget.

Which metrics track timing closure progress?

Teams watch worst negative slack, total negative slack, and the failing-endpoint count across every corner and mode. Each optimization pass should shrink those numbers. A block counts as timing-closed once WNS is positive, or within an agreed ECO margin, across all multi-corner multi-mode scenarios at the end of implementation.