I currently work at 10X, Inc., where I develop products as a software engineer with a focus on server-side development, but with a “do whatever it takes” attitude to create product value, crossing boundaries as needed.

Career

  • Meiji University (2013~2017)
  • Meiji University Graduate School, Neuroscience (2017~2019)
  • Bizreach,inc Visional Incubation,inc / BizHint,inc (2019~2023)
  • 10X,inc (2023~)

April 2019

Joined Bizreach Inc. as a new graduate engineer. Declared “I want to go to the most chaotic environment in this company” and was assigned to the BizHint business unit, the only new business unit among my peers.

February 2020

Bizreach Inc. became a holding company as Visonal Inc., and I transferred to Visional Incubation Inc., which integrated new business areas. At the BizHint business unit, I worked as a full-stack engineer on a “B2B matching platform for small and medium-sized business owners” with 300,000 members, using Go and React (TypeScript), handling everything from requirements definition to implementation.

September 2020

Systematized email marketing campaigns that accounted for 90% of revenue and received company recognition.

April 2021

Developed a survey feature to create revenue streams beyond lead generation. Built a new revenue pillar and utilized it for research and surveys to improve lead quality.

September 2021

Collaborated with one designer to renew the iOS app. Created new revenue points and contributed to a 10% increase in overall MAU.

June 2022

Led the development of a B2B platform that allows customers to manage their own advertising as a product manager. Development mainly focused on server-side development using Golang, and also developed frontend using React (TypeScript) as needed.

February 2023

Joined 10X, Inc. as a software engineer. Building Japan’s leading online supermarket platform in small, distributed teams. Leading backend and Flutter development on GCP.

Designed and implemented the client and backend for the ranking feature, handling API design, data modeling, and client integration to meet strict latency and reliability requirements.

Redesigned the architecture and Firestore schema to significantly reduce latency and scale to a wide range of product categories. Safely deployed changes using feature flags. Beyond feature delivery, led projects to release, defined code review and testing practices, and reviewed many PRs while considering technical constraints and business/UX impact in design and development.

Side Projects

Personal Development

Skills

Software Engineer

  • Golang: 6+ years
  • React (TypeScript): 3+ years
  • Dart / Flutter: 2+ years
  • SwiftUI: 2+ years
  • GCP: 6+ years
  • AWS: 5+ years

Hobbies

  • Sauna: I go to the sauna 5 times a week. My recent favorite is Paradise Sauna in Mita.
  • Houseplants: I grow 4 Platycerium (staghorn ferns).
  • Walking: When I get stuck in development, I refresh myself by walking and meditating with an empty mind.

Reference URLs