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Saburo Suzuki
Verified Expert in Engineering
Software Developer
Tokyo, Japan
Toptal member since October 1, 2017
Bio
Saburo is a full-time freelancer with 15 years of development experience. In his career, he has worked on web development and is exceptionally skilled in Ruby on Rails, PHP, and JavaScript and its frameworks. Saburo communicates complex ideas clearly and accurately and works well in teams of all sizes.
Portfolio
Beyond Finance, LLC
Ruby on Rails (RoR), PostgreSQL, Amazon Web Services (AWS), RSpec, Sidekiq...
VacationRenter
React, Node.js, PostgreSQL, Next.js, Tailwind CSS, Cypress, Front-end...
Thirty Madison Inc
Cypress, RSpec, Apollo, GraphQL, React, TypeScript, Ruby on Rails (RoR), Ruby...
Experience
- JavaScript - 15 years
- Node.js - 10 years
- Ruby on Rails (RoR) - 10 years
- React - 9 years
- Angular - 6 years
- Next.js - 4 years
- React Native - 3 years
- Tailwind CSS - 3 years
Work Experience
Back-end Senior Ruby on Rails Developer
2022 - 2023
Beyond Finance, LLC
- Converted the business logic from the old Node.js project to a new Ruby on Rails project.
- Wrote down RSpec tests and provided 100% code coverage.
- Implemented a comprehensive job system with Sidekiq and integrated it with Salesforce API.
Technologies: Ruby on Rails (RoR), PostgreSQL, Amazon Web Services (AWS), RSpec, Sidekiq, Web Development, MySQL, Ruby, Agile Software Development, GitHub, Redis, Back-end, Full-stack, E2E Testing, API Integration
Software Engineer and Full-stack Developer
2020 - 2022
VacationRenter
- Implemented primary search functions for hotels, villas, houses, and resorts. The front end was built with React, and Next.js was used for server-side rendering.
- Built a multi-lingual system on the front end and optimized the bundler to improve performance.
- Introduced Cypress for front-end E2E testing and implemented A/B testing to analyze user experiences.
- Wrote REST APIs for new features and implemented administration portals to manage base information on databases.
Technologies: React, Node.js, PostgreSQL, Next.js, Tailwind CSS, Cypress, Front-end, JavaScript, Web Development, Agile Software Development, Redux, GitHub, Microservices, Redux-Saga, Amazon Web Services (AWS), Full-stack Development, CSS, HTML, Back-end, Webpack, MERN Stack, WebApp, Full-stack, Single-page Applications (SPAs), Storybook, Front-end Development, CSS-in-JS, E2E Testing, API Integration
Full-stack Developer
2018 - 2019
Thirty Madison Inc
- Developed an API with GraphQL on Ruby on Rails (RoR) for customers and doctors.
- Created the UI/UX with React and styled-components and supported a responsive design with SCSS.
- Wrote back-end and front-end test cases with RSpec and Cypress.
Technologies: Cypress, RSpec, Apollo, GraphQL, React, TypeScript, Ruby on Rails (RoR), Ruby, Front-end, JavaScript, Web Development, MySQL, Agile Software Development, Redux, GitHub, Redux-Saga, React Apollo, Sidekiq, Full-stack Development, Stripe API, CSS, HTML, Redis, Back-end, Webpack, WebApp, Full-stack, Single-page Applications (SPAs), Storybook, Front-end Development, CSS-in-JS, E2E Testing, API Integration
Senior Front-end Developer
2018 - 2018
S3: Shapiro Settlement Solutions (via Toptal)
- Developed a single-page application using React and Apollo. The app is used as a management tool for law entities.
- Created AWS Lambda functions to track and store the details of law entities.
- Updated database structure and implemented a new GraphQL API.
Technologies: Microservices, AWS Lambda, Express.js, Node.js, GraphQL, React, Front-end, JavaScript, Web Development, Agile Software Development, PostgreSQL, Redux, MongoDB, GitHub, Redux-Saga, React Apollo, Apollo, Amazon Web Services (AWS), CSS, HTML, Webpack, WebApp, Full-stack, Single-page Applications (SPAs), Storybook, Front-end Development, CSS-in-JS, API Integration
Lead Developer
2012 - 2016
Tose
- Developed REST APIs for web and iOS applications.
- Built a single-page application with Angular and React.
- Developed SaaS products with a team.
- Led the development of a job-posting system.
- Developing real-estate management with Laravel/Vue.js.
Technologies: MERN Stack, MEAN Stack, Ruby on Rails (RoR), Angular, Vue, JavaScript, Web Development, PHP, MySQL, Ruby, Agile Software Development, Node.js, MongoDB, Django, Python, Amazon Web Services (AWS), Full-stack Development, Stripe API, CSS, HTML, Back-end, WebApp, Full-stack, Single-page Applications (SPAs), Front-end Development, CSS-in-JS, API Integration
Web Developer
2009 - 2011
Tose
- Developed eCommerce websites.
- Built custom CMS and SaaS products.
- Contributed, as a team member, to the development of a social network.
Technologies: Ruby, AngularJS, Ruby on Rails (RoR), Web Development, JavaScript, PHP, MySQL, Agile Software Development, Django, Python, Amazon Web Services (AWS), Full-stack Development, Stripe API, CSS, HTML, MEAN Stack, WebApp, Full-stack, Single-page Applications (SPAs), Front-end Development, API Integration
Project History
Beyond Finance
A financial service that I implemented with Ruby on Rails. An old service was implemented with Node.js and had a low-quality code structure. I worked as a back-end developer and implemented financial service and estimation logic with the new platform.
Online Search Portal for Rentals
An online search portal for rentals developed with JavaScript. The back end was built in Node.js and Express.js. The front end is in React, Next.js, and Tailwind CSS.
The system gathers property information from 3rd-party vendors and shows it to users based on search queries. I worked primarily as a senior developer and implemented search features and multi-lingual systems, upgraded bundles, and improved server-side rendering features.
The system gathers property information from 3rd-party vendors and shows it to users based on search queries. I worked primarily as a senior developer and implemented search features and multi-lingual systems, upgraded bundles, and improved server-side rendering features.
Migraine Treatments
http://www.withcove.comTake control of your migraines with personalized treatment and continuous online support from doctors.
It requests users to answer their questions about circumstances, and an assigned online doctor will check the result and provide the prescription and medicines.
The back end was developed using Ruby on Rails and GraphQL. The front end was built using React, Apollo, and TypeScript. I worked as a full-stack developer focusing on API and user experience.
It requests users to answer their questions about circumstances, and an assigned online doctor will check the result and provide the prescription and medicines.
The back end was developed using Ruby on Rails and GraphQL. The front end was built using React, Apollo, and TypeScript. I worked as a full-stack developer focusing on API and user experience.
Social Network
I developed a formal social network that targeted college students. This application allows users to post news and technologies, chat and group discussions, and a scheduling and mailing system.
Technologies: PHP, CodeIgniter.
Technologies: PHP, CodeIgniter.
Online Beanie Shop
This eCommerce site sells beanies to women with cancer and other diseases that cause hair to fall out.
The website was built with WordPress, WooCommerce, Bootstrap, and jQuery. I built it by myself from scratch.
The website was built with WordPress, WooCommerce, Bootstrap, and jQuery. I built it by myself from scratch.
Gift Card Store
An eCommerce website that sells gift cards for children. It was built with PHP, had an old design style, and lacked UI/UX.
I worked as a full-stack developer and redesigned the website from scratch.
Ruby on Rails was used to implement back-end logic, and a new responsive design was used for the front end.
Technologies: Ruby on Rails, Sidekiq, Redis, PostgreSQL, Bootstrap, and Stripe API integration.
I worked as a full-stack developer and redesigned the website from scratch.
Ruby on Rails was used to implement back-end logic, and a new responsive design was used for the front end.
Technologies: Ruby on Rails, Sidekiq, Redis, PostgreSQL, Bootstrap, and Stripe API integration.
Online Job Posting System
I developed a job posting system to purchase a freelancing service as a project manager and team leader. It supports only small tasks such as content writing, graphical designs, and research.
Technologies: Ruby on Rails
Technologies: Ruby on Rails
Fitness App
I developed a fitness application and worked as a full-stack developer on this project.
This was built with a REST API and as a standalone web app; the REST API also supports the iOS application.
Technologies: Ruby on Rails, REST API, Sidekiq, Redis, React.
This was built with a REST API and as a standalone web app; the REST API also supports the iOS application.
Technologies: Ruby on Rails, REST API, Sidekiq, Redis, React.
Online Dating Network
I developed an online dating website that targeted users in India. The interesting thing about this site was that users could create multiple profiles for their relatives (son, daughter, brother, sister, and more).
This site was built with AngularJS, and the back end was built with Ruby on Rails.
This site was built with AngularJS, and the back end was built with Ruby on Rails.
Account Management System
https://www.accountdock.comI developed a SaaS product that allows customers to manage their Stripe accounts and clients easily. It also supports a JavaScript library that works on any other site and shows the history of each customer transaction, so clients can use that library to encourage their customers.
Technologies: Ruby on Rails, Sidekiq.
Technologies: Ruby on Rails, Sidekiq.
Education
2004 - 2008
Bachelor's Degree in Information and Communication Technology
University of Tokyo - Tokyo, Japan
Skills
Libraries/APIs
React, Node.js, Vue, Redux-Saga, Stripe, Sidekiq, Stripe API
Tools
Webpack, RSpec, React Apollo, GitHub
Languages
TypeScript, Ruby, JavaScript, PHP, GraphQL, CSS, HTML, Python
Frameworks
Angular, Ruby on Rails (RoR), Express.js, Next.js, React Native, WebApp, Material UI, NestJS, Redux, Django, Tailwind CSS, AngularJS, Cypress, Ruby on Rails 4
Paradigms
Agile Software Development, MEAN Stack, E2E Testing, Microservices
Storage
Redis, MySQL, PostgreSQL, MongoDB
Platforms
AWS Lambda, Amazon Web Services (AWS)
Other
Web Development, Front-end, Back-end, Full-stack, Single-page Applications (SPAs), Storybook, Front-end Development, CSS-in-JS, API Integration, Apollo, MERN Stack, Full-stack Development
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