An interview with Akihiro Juichiya on Good-Feel's site. It seems that he left Konami during the 2000s, worked in Quintet and moved to Good-Feel during the 2010s. He was credited in some of Good-Feel's games like Yoshi's Crafted World and Battleground Z as a sound designer
https://www.good-feel.co.jp/recruit/staff/10/
NOTE: Good-Feel only left his initials on the interview, but considering he's the only guy with those initials who worked on the sound so...yep, that's him. I'll add his pic on the page as well