Why Your Senior or Principal Engineer Req Has Been Open for Six Months

The req opened in January. It's June. HR says the pipeline is healthy, the agency says the market is tight, and the candidates reaching your calendar keep turning out to be mid-level engineers wearing senior titles, or generalists who have never seen a tapeout. Nobody can tell you what's actually wrong.

Usually a few specific things are wrong, and none of them are the ones getting blamed. Here's what keeps these reqs open, and what changes it.

It's Probably Not Your Comp Band

When a req ages, compensation takes the blame first. Sometimes that's fair. More often the problem is arithmetic. At the senior and principal tier, the qualified population for a specific profile is measured in hundreds, not thousands. Take physical design engineers with real chiplet program experience: industry estimates put that group at roughly 200 to 300 people, and AMD, Intel, Broadcom, Marvell, and every funded AI silicon startup are recruiting from the same list.

You can raise the band 15 percent and it won't conjure new members of that population. The funnel isn't underpriced. It's drawing from a pool your process was never designed to reach.

Titles Don't Mean What Your Funnel Thinks They Mean

A senior DV engineer writes correct UVM testbench code, debugs failures, and contributes to coverage closure. A principal DV engineer owns the coverage model, decides what gets verified formally versus in simulation, and can tell you when the chip is actually done, with a record of closure that didn't let escapes reach silicon. Same words on a resume. Different animals.

DFT has the same split. A DFT engineer runs scan insertion and ATPG to coverage targets on a block. A DFT architect owns the full-chip test strategy: hierarchical DFT, compression tradeoffs, test time budgets, production test bring-up with the foundry. If your screening process can't make these distinctions, your funnel fills with the tier below the one you're hiring for, and you discover it one onsite at a time.

The Engineers You Want Generally Aren't on Job Boards

They're employed. They're known quantities inside their companies and their discipline. Their last role came through someone who knew their work, and so will their next one. Posting a req and waiting selects for active job seekers, and at this tier, active job seekers and qualified candidates are mostly separate populations. That's not a knock on anyone in your pipeline. It's just where the overlap sits.

Your Job Description is Doing Quiet Damage

Generic requirements read like HR copy, and strong engineers read them the way you'd read a vague spec: as a signal that the team doesn't know what it needs. The reqs that pull real senior and principal candidates read like engineering documentation. The process node. The block or subsystem. The tool stack. Where the program sits in its lifecycle. What this person will own, stated plainly.

Specific reqs do two jobs at once. They attract engineers who recognize their own work in the description, and they quietly repel the keyword collectors who would otherwise clog the funnel.

Keyword Screening Can Reject Your Best Resumes

The signal of a real principal lives in the work: DDR bring-up on first silicon, timing closure at 5nm on a design with dozens of clock domains, a coverage model that closed without escapes. Resumes carrying that signal often fail automated screens, because they describe problems solved rather than keywords matched. The engineer who writes “owned full-chip CDC closure” may never use the exact phrase your filter wants. The resumes that survive keyword screening are, by construction, the ones optimized for it.

What Actually Fills the Req

Four changes, in rough order of impact.

Source through people who know the work. At this tier, networks beat postings, whether that's your own senior engineers' networks or a staffing partner whose bench includes engineers they've already placed and verified on comparable programs.

Put a technical screen at the front of the funnel. Not a quiz. A conversation about what the candidate owned, run by someone who can tell depth from vocabulary.

Move fast once you find them. These engineers field multiple calls. A six-week interview loop with two committee rounds loses candidates that a two-week loop would have closed.

And consider contract honestly. A matched contract engineer can start in two to four weeks instead of the three to six months a senior FTE search typically runs, and the engagement gives both sides working proof before anyone commits further. Extensions are the norm in this market rather than the exception; 43 percent of Game 7 placements have been extended at least once.

Three Questions That Find the Real Principals

If you take one tactical thing from this post, make it an interview adjustment. For a DFT req, try these.

• How do you decide between scan compression ratios, and what drives the tradeoff?
• Walk me through hierarchical DFT on a multi-billion-gate design.
• How do you approach test for power-gated domains?

Build the equivalent set for your discipline from the decisions a principal would have owned. The pattern matters more than the questions themselves: the title doesn't tell you, the answers do.

Have a req that's been open too long? Send it over. We'll tell you honestly whether we can help, and who else is hunting the same profile.