AI　KAISEI GLOBAL

Next.js Marketplace & Catalog MVP — Live Production Site Production luxury multi-vertical catalog I solo-built and maintain: listing grid, detail pages, inquiry/lead capture, and a Python data pipeline into Supabase.

Stack: Next.js, Supabase, Vercel. Live site — not mockups.

Same...

Native Japanese UI localization for SaaS and web apps — developer-ready JSON/CSV (next-intl, i18next), not Google Translate.

Deliverables: natural JP copy, EN→JP glossary with tone notes, placeholder and string-length checks so UI does not break.

~1,500 strings per sprint · 2...

https://contra.com/hidaka_kikuchi_7pzbrqfx/work?previewPortfolioProjectId=WyJQb3J0Zm9saW9Qcm9qZWN0Iiw0NjA5MTI5OV0%3D&r=hidaka_kikuchi_7pzbrqfx&referralExperimentNid=DEFAULT_REFERRAL_PROGRAM

Product Promo Short Videos — Reels & Shorts Vertical product promos for TikTok, Instagram Reels, and YouTube Shorts.

• 15–30s · 1080×1920 (9:16) • Hook in the first 2 seconds · burned-in subtitles • Brand colors · royalty-free music · 2 revision rounds

Sample edit for a luxury...