7+ Years of Experience | Software Engineer | Ruby on Rails Specialist | • Accomplished Software Engineer with over 7 years of professional experience in developing robust, scalable, and maintainable web applications using Ruby on Rails framework.

Experience

2024 — NowFirstSenior Software Engineer

2024 — Now

San Francisco Bay Area

2022 — 2024EverlanceSoftware Engineer

2022 — 2024

San Francisco Bay Area

Improved Trip Tracking Algorithm

Developed a new logic for accurate favorite place matching, eliminating user complaints and reducing customer support workload.

Social Login Implementation

Led the integration of Google and Apple social logins, enhancing user experience and resolving complex use cases seamlessly.

SSO Implementation

Implemented SSO by coordinating with clients and the customer success team, ensuring smooth onboarding and client satisfaction.

Subscription Model Migration

Executed migration of Android users from Stripe to Google Play Store, ensuring a seamless transition and maintaining subscription service integrity.

2020 — 2022creww.meBackend Developer

2020 — 2022

Tokyo, Japan

Spearheaded the implementation of a single sign-on function, enabling seamless user migration from a legacy monolithic application to multiple new web applications using Ruby on Rails, HTML5, React, and PostgreSQL.

Significantly improved codebase maintainability by increasing test coverage from 40% to 80%.

Reduced automated test duration from 20 minutes to 5 minutes by upgrading the framework from Rails 4 to Rails 5, enhancing development efficiency.

2019 — 2021SurvelionCo-Founder / Software Engineer

2019 — 2021

Within 23 wards, Tokyo, Japan

Developed and launched an online survey application for small restaurants using Ruby on Rails, HTML5, Vue.js, and MySQL. Managed development, UI design, and subscription management.

Implemented automated data collection and analysis of survey results, contributing to improved customer satisfaction for client restaurants.

Onboarded and supported local restaurants, enabling them to leverage the platform for data-driven decision-making and service improvements.

Integrated the platform with LINE messenger, increasing survey response rates and enhancing user experience.

Continuously iterated the platform based on client feedback and market needs, ensuring competitiveness and alignment with small restaurant business goals.

2017 — 2020Ascender HCMSoftware Engineer

2017 — 2020

Within 23 wards, Tokyo, Japan

Developed a tax return software that simplifies the complex tax return process by implementing a tax calculation algorithm using Ruby on Rails, HTML5, jQuery, and MySQL.

Built an employee onboarding system that automated information collection from new hires, reducing the workload of the HR department.

Mentored new developers, helping them familiarize themselves with the codebase and contributing to their successful integration into the team.

Education

2012 — 2014

San Francisco State University

Bachelor of Science (BS)

2012 — 2014

2015 — 2015

Lighthouse Labs

Web Development Immersive Program

2015 — 2015