I'm Yuta Kusuno, a software developer with over 4 years of experience. I've worked on projects in the transportation sector, building reliable B2B solutions, and in social networking, creating engaging platforms that connect people.
I'm working on a social networking service with 170K+ users built on Ruby on Rails. In my current role, I tackled our performance challenges by introducing a new rendering engine, fixing several N+1 query issues, and implementing in-memory caching. I've cut our median API response time from 1.32s to 638ms (52% reduction) and improved our 95th percentile response time from 2.11s to 1.06s (50% reduction). This has enhanced the timeline experience for our users, making both initial loading and refresh actions much more responsive.
What drives me is building products that help people connect and make their daily lives easier.
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Backend Developer | Sep. 2024 - Present
PIAZZA Inc - Tokyo, Japan (Remote)
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<aside> <img src="https://media.licdn.com/dms/image/v2/C4D0BAQHUxPY9NFXmGQ/company-logo_200_200/company-logo_200_200/0/1631310946070?e=1745452800&v=beta&t=JjMdyt4GOrLgutmsRrgp1Q_3UoUPeVdvuz8vpgz2KBE" alt="https://media.licdn.com/dms/image/v2/C4D0BAQHUxPY9NFXmGQ/company-logo_200_200/company-logo_200_200/0/1631310946070?e=1745452800&v=beta&t=JjMdyt4GOrLgutmsRrgp1Q_3UoUPeVdvuz8vpgz2KBE" width="40px" /> Full Stack Developer | Oct. 2023 - Feb. 2024
Project: Human City - Toronto, ON (Remote)
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<aside> <img src="https://assets.st-note.com/production/uploads/images/11292227/profile_d67d9f22832415203b591598f79832a3.jpeg?fit=bounds&format=jpeg&quality=85&width=330" alt="https://assets.st-note.com/production/uploads/images/11292227/profile_d67d9f22832415203b591598f79832a3.jpeg?fit=bounds&format=jpeg&quality=85&width=330" width="40px" /> Software Developer Project Lead | Apr. 2022 - Apr. 2023
DennoKotsu Inc - Tokushima, Japan (Remote)
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Software Developer | Apr. 2020 - Mar. 2022
DennoKotsu Inc - Tokushima, Japan (Hybrid)
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