Kenta Uneoka

I’m a Senior Fullstack Engineer with 10+ years shipping production B2B SaaS and e-commerce platforms across Japan. I’m at my best owning features end-to-end—from database schema and API design through the UI—while keeping reliability, correctness, and observability front and center.

At Knowns Inc., I build and maintain Go backend services powering a consumer research and marketing-intelligence platform. I owned API design and data modeling for survey delivery and analytics, and I developed high-volume data collection and analysis pipelines with a focus on throughput, correctness, and production observability.

I also ship user-facing experiences, delivering Next.js + React frontend features for research dashboards and data-visualization UIs used by marketing and enterprise customers. In parallel, I designed and maintained REST API layers for enterprise marketing customers and partner integrations, delivering end-to-end work within a 10-engineer agile team.

Before that, at Smaregi Inc., I designed and shipped backend services for order management, inventory sync, and multi-channel listing across major Japanese marketplaces. I built B2B e-commerce features, implemented REST API integrations (including idempotency and retry behavior for unreliable upstreams), and contributed across the stack while mentoring junior engineers on code review practices.