Hi.
I'm Charlie - I build web and mobile applications. Feel free to checkout my projects on Github below, or see my posts in the above link.
Contact me via ✉️ cthanap@gmail.com
What I've built
Credit Card Issuing & Processing System
Visa Credit Card Issuing and Management system. Application can handle millions of users and cards, and allows customers to be able to create/use/revoke new credit cards on the fly.
Date: Jan 2022 - Present
Status: Live
What is it: Visa Credit Card Issuing and Management system. A flagship product for a Series C fintech company.
Website link: Product Website
10+ Enterprise Backend Microservices
Led the development of 10+ Backend Microservices for a fintech company
2022 - 2023
DevOps
AWS
Go
Tereraform
Kubernetes
Datadog
Date: Jan 2022 - Present
Status: Live
What is it: Microservices that runs on the backend of a financial technology. This includes services like SMS notification service, Webhook service, API gateway, QR Code processor, Automatic backup system service, Wallet & accounting service
Sport Court Management Web Application
Booking application that manages sport court booking availability with integrated payment system
2021
WebsiteReact
TypeScript
GraphQL
Microservices
PostgreSQL
Date: January 2021 - Present
Status: Live
What is it: SAAS appliction for tennis/badminton/soccer court owners to display court availability, and allow online bookings with integrated payment system
Website link: landingpage-booking.vercel.app
Coffee Gift Subscription
Service that sends gift coffee subscription to your favorite people.
2021
WebsiteWebflow
AWS
Airtable
Zapier
Date: May 2021 - Present
Status: Live
What is it: Service that sends gift coffee subscription to your favorite people. A fun side project that I developed during covid.
Website link: toastyroaster.com
Booking Management System
Meeting room booking platform with >100k active users. Designed, built, and deployed. White-labeled for multiple enterprise clients
Date: January 2020 - Present
Status: Live
Active users: > 100,000
What is it: A mobile room booking application with Admin panel and role-based permission layers. Features include: Calendar Booking, Booking with capacity, Custom notification, Booking for others.
This is one of the main projects I've worked on at work. I contributed mostly through designing the front and backend architecture and coding.
The product also has a white label solution that is being used by
1. PTT-OR Space Management: Product Tour Demo
2. True Digital Park Workspace Management: Product Website (live product can only be accessed by tenant of employee working at True Digital Park)
King Fisher
A fun multi-player game that a group of developer and I built for our final project.
Date launched: December 2019
Status: Live
What is it: A real-time multiplayer strategy game built by 4 engineers (who never build games). We had 21 days to come up with an idea and finish the project. Even with limited time, it was a lot of fun and a great learning experinece.
Snap Reviews
iOS & Android app that retrieves reviews for grocery items using React Native and USDA Food/Nutrition Database
2019
YouTubeGitHubReactNative
Redux
USDA APIs
React
PostgreSQL
NativeBase
Date launched: November 2019
Status: Live
What is it: An app idea that came from my own struggles. A solo project I attempted to quickly build and ship.
Education
Northwestern University Evanston, IL
Bachelor of Arts in Economics, Minor in Business Institutions, and Farley Center Certificate in Entrepreneurship
Fullstack Academy Chicago, IL
Front and Back End Software Development. Computer science theory, algorithms, and practical usage of industry standard tools and libraries
