Thanks for helping surface these. The sad fact, though, is that Japanese IT salaries even at the "good" companies are still a fraction of the global market rate.
I was recently approached for an engineering management role at the innovation wing of $JAPANESE_MEGACORP (and I see they're one of your customers!). Alas, the top of their range was around half of what I'm getting paid in Singapore, and that's before accounting for much higher taxes etc.
Japan's tech job market is not similar to other countries though. I can bet you that $JAPANESE_MEGACORP you speak of is well known for paying below market rates.
The salary bands in Japan are the following-
gaishikei (FAANGs) > Japanese Startups > Japanese Software tech Megacorps > Japanese non-Software tech Megacorps > Everyone else (basically minimum wage)
In normal high-tech countries the domestic software megacorps match or exceed FAANG salaries. Spotify & Booking in Europe, RazorPay & Flipkart in India, Gojek in SEA all match or exceed FAANG salaries but not in Japan
I was recently approached for an engineering management role at the innovation wing of $JAPANESE_MEGACORP (and I see they're one of your customers!). Alas, the top of their range was around half of what I'm getting paid in Singapore, and that's before accounting for much higher taxes etc.