Jay Lee
Verified Expert in Engineering
Full-stack Developer
New York, NY, United States
Toptal member since August 5, 2022
Jay is a full-stack developer with software consulting experience in the insurance, beauty, media, technology, and education industries. At Spotify, he re-platformed an existing legacy Rails 3 monolith web application, delivered a new web design using React and SCSS, and converted existing Ruby on Rails web pages to React. At IBM, he helped scope an MVP, built an administration tool, and introduced E2E testing. Jay is known for hitting deadlines and delivering high-quality, tested projects.
Portfolio
Experience
- JavaScript - 8 years
- Full-stack - 8 years
- Node.js - 5 years
- React - 5 years
- C# - 4 years
- TypeScript - 4 years
- Angular - 3 years
- Vue - 1 year
Availability
Preferred Environment
MacOS, Git, Visual Studio Code (VS Code), Slack
The most amazing...
...project I've developed is an all-in-one gaming application where users can log in, download games from various sources, and start playing.
Work Experience
Full-stack Developer
Haven Tech
- Integrated a message queue system to an administration portal to notify application status updates.
- Delivered new features to the agent portal where insurance agents can buy or manage insurance policies.
- Supported customized landing pages for insurance agencies.
- Added a mock service to decouple and simplify the data flow in the local environment and reduced the waiting time from 30 seconds to less than ten seconds.
Stride Software Consultant
Spotify
- Replatformed an existing legacy Rails 3 monolith web application to the modern version using Node.js, React, TypeScript, and GraphQL.
- Implemented the website's new design using React and SCSS.
- Converted existing Ruby on Rails web pages to React and Next.js web pages.
Stride Software Consultant
Vindex
- Built a customer-facing Windows desktop application using C# and WPF where users can log in and play games using either their own account or a Vindex licensed account.
- Created a customer-facing web application where users can make reservations online and participate in ongoing game tournaments with React.
- Developed an administration web application where admins and staff can manage reservations using React.
- Assisted in system design and architecture work for AWS and Terraform. Designed and built a REST API using Node.js and Hapi.js.
- Participated scoping the MVP and delivered an MVP within the deadline.
Stride Software Consultant
Blue Apron
- Implemented a design system in Storybook to mitigate inconsistencies on the website and reduce design debt.
- Updated React to 16.8 and fixed pipeline issues encountered while upgrading.
- Refactored and added unit tests to ensure the code met quality standards.
Stride Software Consultant
IBM
- Assisted the client in rebuilding a new team from the ground up and scope their MVP.
- Built an internal administration tool for IBM users to create outage alerts for core tools. These notify its users through IBM's intranet website using Node.js and Vue.
- Implemented dark mode and improved web accessibility of the intranet website.
- Introduced E2E testing using the WebdriverIO framework.
Stride Software Consultant
Codecademy
- Added a feature that helps users pause their subscription for a given period of time to reduce the turnover rate.
- Addressed various technical debts to make the existing React components reusable.
- Added A/B testing to the subscription pause feature to minimize risk and increase user engagement.
- Implemented and published the Ruby on Rails gem to authenticate with a LinkedIn account.
Full-stack Developer
FragranceX.com
- Implemented a perfume subscription service on the ASP.NET website, which led to the gain of over 3,000 subscribers in the first month.
- Developed a customer relationship management (CRM) and shipping management Windows desktop application using C# and WPF.
- Built an automated refund system with C# for returned orders.
Experience
Korean-English Hymn Book Mobile Application
JBCH USA
http://www.jbchusa.orgEducation
Bachelor's Degree in Computer Science
Stony Brook University - Stony Brook, New York, USA
Skills
Libraries/APIs
React, Node.js, Vue, jQuery
Tools
Git, Slack, WebdriverIO, Webpack, Terraform, GitLab
Languages
JavaScript, C#, TypeScript, CSS, HTML, SCSS, Java, Ruby, ASP.NET Razor, GraphQL
Frameworks
Express.js, ASP.NET, Windows Presentation Foundation (WPF), .NET, Jest, Redux, ASP.NET MVC 6, Angular, Ruby on Rails (RoR), React Native, Hapi.js, Next.js, Flutter, NestJS
Paradigms
Test-driven Development (TDD), Unit Testing, Agile, Back-end Architecture, MVC Design, MEAN Stack
Platforms
MacOS, Visual Studio Code (VS Code), Amazon Web Services (AWS), Azure, Docker
Storage
Microsoft SQL Server, PostgreSQL, MongoDB, Google Cloud, CouchDB
Other
Software Development, Full-stack, APIs, Back-end, Web Development, Front-end Development, Full-stack Development, Back-end Development, Front-end Architecture, Front-end, Back-end Performance, Code Review, South Korea, Storybook, Ruby Gems, Minimum Viable Product (MVP), Greenfield, A/B Testing, MSMQ, Subscriptions, Payment APIs
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