I've been tracking this as well [1], and there's indeed a clear difference between pre-2023 and 2023 onward.

[1] https://hnjobs.mathieularose.com

Unsurprisingly, the "Who's Hiring" almost perfectly tracks the "Software Development Job Postings on Indeed in the United States" data from the fed, though it doesn't go as far back.

https://fred.stlouisfed.org/series/IHLIDXUSTPSOFTDEVE

Most other industries follow a similar trend, but didn't fly quite as high in 2022 and aren't in as bad of a trough right now.

Electrical Engineering: https://fred.stlouisfed.org/series/IHLIDXDETPELECENGI (actually up slightly)

Accounting: https://fred.stlouisfed.org/series/IHLIDXUSTPACCO (more seasonal noise)

Marketing: https://fred.stlouisfed.org/series/IHLIDXUSTPMARK

Yours looks much nicer!

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