Healthcare Information Platform - United States
Backend Developer, Dec 2025 – Present
Project description
- Developed and maintained a cloud-native healthcare platform supporting hospitals, medical centers, and healthcare organizations.
- Built scalable microservices, micro-frontend, and serverless solutions for healthcare operations and data management.
- Leveraged AI-assisted development and intelligent analytics to improve development productivity and system reliability.
Responsibilities
- Developed backend services and APIs using NestJS and TypeScript.
- Implemented new features and enhancements based on business requirements.
- Collaborated with architects and senior engineers to design scalable solutions.
- Worked with DevOps teams to deploy and operate applications on AWS.
- Investigated and resolved production issues and system bottlenecks.
- Applied coding standards and best practices to ensure code quality and maintainability.
- Utilized AI-assisted engineering tools to support development, troubleshooting, and documentation.
Technologies
Education Platform - United States
Backend Developer, Feb 2024 – Nov 2025
Project description
- A platform for educational recommendations based on user interests, skill sets, and goals.
- Working on a team of 10+ members.
Responsibilities
- Developing new features and ensuring that deliveries are on-time and on target.
- Refactor and take care of the code to make it more readable and easier to maintain.
- Work closely with engineer managers and designers to understand the requirements and design specifications to bring them to life. Additionally, contribute ideas to the design to make the user experience better.
- Review the code and provide feedback to the team member to improve the quality of the code.
- Testing to ensure that all the logic works correctly and supporting the resolution of issues in the production environment.
Technologies
- Apollo Graphql, Nestjs, ETL, AWS transcribe.
Fintech Platform – United States
Software Developer, Feb 2023 – Jan 2024
Project description
- A platform that facilitates the credit union to efficiently buy and sell loans by establishing a rapid exchange process for information and contracts. Additionally, the application allows credit unions to sell loans through auctions.
- Working on a team of 10+ members.
Responsibilities
- Developing new features and ensuring that deliveries are on-time and on target.
- Create new common components and consolidate existing ones to increase the shareability of the components to boost the development process.
- Refactor and take care of the code to make it more readable and easier to maintain.
- Work closely with engineer managers and designers to understand the requirements and design specifications to bring them to life. Additionally, contribute ideas to the design to make the user experience better.
- Review the code and provide feedback to the team member to improve the quality of the code.
- Testing to ensure that all the logic works correctly and supporting the resolution of issues in the production environment.
- I also support writing the API for the GraphQL API Gateway.
Technologies
- ReactJS, RebassJS, PDFjs, Graphql
- React-Query, Redux toolkit
Ownership Transfer Market - Korean
Backend Developer, June 2022 – Jan 2023
Project description
- An online market for ownership transfers in Korea makes ownership transactions simpler, more secure, and more efficient.
- Working on a team of 5 members
Responsibilities
- Design and construct the infrastructure for this platform.
- Create the codebase structure, analysing and designing the database schema, selecting the design pattern that will work efficiently with the business need.
- Communicate with 3rd Korean team to integrate the payment gateway as well as the user identity specific for Korean to the platform.
- Providing technical advice to customers to create a safe and convenient user experience.
- Create a mock mechanism to overcome the issue of cross-country API issues of payment gateway and user identity.
Technologies
- Lambda, Redis, Cognito, S3, API Gateway, MySQL,
OIDC Provider – Hong Kong
Full stack Developer, Jan 2021 – May 2022
Project description
- An OIDC provider to enable single sign-on for the client ecosystem.
- Working on a team of 10+ members
Responsibilities
- Collaborate with the in-house development team to develop new features that fulfil the client's requirements.
- Research new technologies and provide clients with advice to make a decision that will make production more user-friendly and efficient.
- Improve the development experience by applying the offline workflow for the serverless development.
- Build common libraries and components which can work across front-end frameworks and shareable between the apps in the ecosystem.
- Support DevOps to work on the migration, as well as creating new environments and operations.
Technologies
- ReactJS, React-native, Typescript
- ExpressJs, Lambda, Redis, Cognito, S3, API Gateway, DynamoDB
Healthcare Platform - United States
Frontend Developer, Jun 2019 - Dec 2020, US
Project description
- A platform that supports the operations of healthcare facilities in the US.
- Not just a single application, this is a platform with a lot of modules to cover all aspects of healthcare facilities.
- Working on a team of 10+ members
Responsibilities
- Development and client communication.
- Create and maintain a component system for this platform.
- Working with Project Coordinator to design and implement the web application.
- Ensure that deliveries are on-time and on target.
- Guiding, supporting the team members in development.
Technologies
- React DND, Antd, Virtual-list, Redux
PCP-Roster - United States
Frontend Developer, Jan 2020 – May 2020
Project description
- A map application for locating the provider of the healthcare network.
- Working on a team of 6 members
Responsibilities
- Development and client communication.
- Analyze requirements and support the team in designing software architecture.
- Ensure that deliveries are on-time and on target.
- Bugs fixing, supporting team members, and maintenance.
- Clarify and implement new features.
Technologies
- Axios, leaflet, react-leaflet
Contract management - United States
Frontend Developer, Jan 2019 – Dec 2019
Project description
- Provide a convenient way to manage the enrolment process of a healthcare facility.
- Working on a team of 6 members
Responsibilities
- Development and client communication.
- Analyze requirements and support the team in designing software architecture.
- Ensure that deliveries are on-time and on target.
- Bugs fixing, supporting team members, and maintenance.
- Clarify and implement new features.
Technologies
Audio-based Social Networking Platform - Vietnam
Full stack Developer, Jan 2018 – Dec 2018
Project description
- A social platform that connects people by audio. An Instagram-like but for audio.
- Working on a team of 3 members
Responsibilities
- Responsibility for the technical side.
- Working on both backend-end(python) and front-end(react-native).
Technologies
