Cadence Quantus RC Extraction Engineer Jobs: Browse Back-End Roles

Every timing signoff at an advanced node starts with a parasitic model, and on the Cadence flow that model comes out of Quantus. Cadence Quantus RC extraction engineer jobs go to back-end engineers who turn a routed layout into the RC data that Tempus reads for timing and Voltus reads for power.

The work is extraction setup and the accuracy behind it. You manage the technology file, generate SPEF from the routed database, and pick the extraction mode that fits the analysis in front of you. Getting that mode wrong is expensive in both directions: too coarse and timing signs off on optimistic numbers, too fine and runtime balloons on a full-chip SPEF. Quantus plugs straight into Innovus and Virtuoso, so you are rarely working alone. Engineers who can correlate Quantus against Synopsys StarRC during technology qualification stand out, because that correlation is what lets a team trust either tool's numbers.

Extraction sits between implementation and signoff, so the role overlaps with physical design engineer jobs upstream and STA engineer jobs downstream. The SPEF you produce is exactly what the timing team loads into Tempus, and if that is where you want to head next, Cadence Tempus timing engineer jobs are a common move for extraction engineers who want to own closure.

Demand concentrates at companies committed to the Cadence implementation and signoff stack. Fabless SoC teams run it end to end, Marvell and Broadcom use it for networking and storage silicon, and the in-house chip groups at the hyperscalers pull it into custom accelerators. A mid-level RC extraction engineer in the US generally sees $125K to $165K base, with staff-level total compensation in the $210K to $290K range at large employers.

What gets you hired is a concrete extraction story: the node you signed off, a coupling problem that showed up in SI timing, or a Quantus-to-StarRC correlation you drove until the two matched. That reads far better than a resume line that just lists the tool.

Save a search for extraction and signoff roles on semidesignjobs.com, list your Quantus and SPEF experience on your profile, and the openings that fit will come to you.

FAQ

What is the difference between Cadence Quantus and Synopsys StarRC?

They are the two leading parasitic extraction tools, each wired into its vendor's flow. Both write SPEF that any timing or power tool can read. Cadence-flow teams on Innovus, Tempus, and Voltus usually run Quantus; Synopsys-flow teams on ICC2, PrimeTime, and PrimePower run StarRC. For most designs the accuracy is comparable, which is why correlating the two is a common qualification step.

How does Quantus handle coupling capacitance for SI analysis?

Quantus models the capacitance between adjacent metal wires in the routed layout, the coupling that turns a switching aggressor net into crosstalk noise on a victim net. Those coupling caps go into the extracted SPEF and feed Tempus for SI-aware timing. Hold analysis is especially sensitive to them at advanced nodes.

Which Quantus extraction modes go with which signoff requirements?

Standard QRC mode covers digital timing signoff, where it balances accuracy and runtime. Field solver mode, GRD, gives the highest accuracy on critical analog and I/O structures and on standard cell library characterization. ECSM supports advanced characterization. Match the mode to the block: QRC for the digital core, field solver for the analog and library corners.