Work Experience
Senior FullStack Engineer (Healthcare Appointment Scheduling Platform)
Duration: 04/2024 - 05/2026
Summary:
- Healthcare platform that enables patients to schedule appointments with healthcare providers online, manage bookings, and communication between patients and medical organizations
- The platform streamlines appointment scheduling and enhances communication efficiency in healthcare services
Responsibilities:
- Developed full-stack features for patient appointment scheduling and management workflows.
- Built and customized reusable UI components based on Material UI and internal design system requirements.
- Developed and integrated GraphQL and REST API functionality using Express.js and PostgreSQL.
- Implemented secure database interactions and validation logic for healthcare-related workflows.
- Introduced automated testing using Jest and React Testing Library to improve reliability and reduce regressions.
- Participated in CI/CD workflows, release processes, and deployment-related activities.
- Used AI-assisted development tools such as Claude, ChatGPT, and GitHub Copilot for refactoring, debugging, test generation, and technical research.
Technologies: React.js, TypeScript, Express.js, PostgreSQL, GraphQL, Redux Toolkit, Jest, React Testing Library, SASS Modules, AWS S3, AWS CloudFront, CI/CD
Senior FullStack Engineer, Maven - Crypto Checkout & Wallet Payment Platform
Duration: 08/2022 - 04/2024
Summary:
- Cryptocurrency payment platform enabling wallet-based transactions across multiple blockchain networks
- The platform supports payment sessions, transaction tracking, wallet validation, and secure checkout flows with real-time payment status monitoring
Responsibilities:
- Designed and implemented REST API endpoints for payment sessions, wallet operations, transaction tracking, and payment lifecycle management.
- Developed PostgreSQL and MongoDB data models for users, wallets, payments, transactions, statuses, and operational records.
- Built checkout flows and wallet-connected interfaces using Next.js, React.js, and TypeScript.
- Integrated wallet connectivity, network validation, transaction execution, and Web3 state management using Wagmi and Viem.
- Worked with AWS S3 for asset storage and infrastructure-related operations.
- Contributed to CI/CD pipelines and production deployment workflows.
- Leveraged AI-assisted development tools to accelerate API design, debugging, refactoring, and technical research.
Technologies: Next.js, React.js, TypeScript, NestJS, PostgreSQL, MongoDB, REST API, Zustand, Wagmi, Viem, AWS S3, CI/CD, SASS
Full-Stack Engineer, Trembit (Software Consulting Company)
Duration: 06/2020 - 08/2022
Online Learning & Community Platform
Summary:
- Large-scale US-based online learning platform serving thousands of users through customer-facing educational products and internal administration systems
- The platform provides educational content and community features to enhance learning experiences
Responsibilities:
- Developed and maintained complex frontend features for both customer and administrative applications.
- Built reusable React.js and Next.js components, dynamic forms, dashboards, and user management interfaces.
- Worked with WebSockets and Web Workers to support real-time functionality and background processing.
- Implemented state management solutions using Zustand and Context API.
- Conducted accessibility research and prepared technical documentation with implementation recommendations and code examples.
- Created and maintained automated test suites using Jest, React Testing Library, and Robot Framework.
- Collaborated closely with product managers, designers, QA engineers, and backend teams in an Agile environment.
- Improved application performance, code quality, and maintainability through regular refactoring and code reviews.
- Used AI-assisted development tools for code analysis, documentation drafting, refactoring ideas, and debugging support.
Technologies: React.js, Next.js, TypeScript, Node.js, WebSockets, Web Workers, Zustand, Context API, Jest, React Testing Library, Robot Framework, SASS Modules, CI/CD
Full-Stack, Art Marketplace & Auction Platform
Summary:
- Global online marketplace and auction platform for artists, enabling users to showcase artwork, participate in auctions, purchase items, and manage international shipping and transactions
- The platform supports international logistics and secure transactions
Responsibilities:
- Designed and developed auction bidding functionality that expanded marketplace capabilities and improved user engagement.
- Built frontend and backend functionality for product management, auction workflows, checkout processes, and order tracking.
- Developed REST APIs and database functionality using Express.js and PostgreSQL.
- Integrated third-party logistics providers including DHL, UPS, and USPS to support international shipping operations.
- Created responsive user interfaces and reusable components using React, TypeScript, Redux, and Styled Components.
- Implemented automated tests using Jest and React Testing Library.
- Contributed to feature planning, code reviews, debugging, production support, and continuous improvement of marketplace functionality.
- Worked closely with business stakeholders to deliver new marketplace functionality and improve user experience.
Technologies: React.js, TypeScript, Express.js, PostgreSQL, Redux, Redux Thunk, Styled Components, Jest, React Testing Library, DHL API, UPS API, USPS API
Front-End Engineer, Multi-Chain Token Launchpad Platform
Summary: Web3 launchpad platform for token pre-sales and fundraising campaigns supporting KYC onboarding, whitelist-based participation, staking pools, token locking mechanisms, tier-based allocations, and campaign management across Ethereum, Polygon, BSC, Solana, and Sui ecosystems.
Responsibilities:
- Developed React-based interfaces for token sale campaigns, investor dashboards, staking pools, and KYC onboarding flows.
- Implemented wallet-connected user experiences, transaction tracking, whitelist validation, and participation eligibility logic.
- Integrated Payload CMS to provide dynamic management of launch campaigns, project content, sale parameters, and marketing pages.
- Worked with blockchain-related user states, staking workflows, token sale participation flows, and campaign management functionality.
- Monitored active token launches, resolved production issues, and delivered UI improvements during fundraising campaigns.
- Utilized AI-assisted development tools for rapid prototyping, debugging, documentation generation, and technical research.
- Collaborated with product and engineering teams during active token launches and fundraising campaigns.
Technologies: React.js, TypeScript, Tailwind CSS, React Query, Zustand, Payload CMS, Blockpass API, SendGrid API, Google Cloud Platform, Sentry, Web3 integrations
Front-End Engineer, NFT Marketplace & Staking Ecosystem
Summary:
- Ethereum-based NFT platform combining NFT ownership management, staking functionality, liquidity analytics, KYC verification, wallet connectivity, and custom NFT creation capabilities
- The platform supports marketing campaigns and promotional launch experiences
Responsibilities:
- Developed React-based user interfaces for NFT dashboards, staking pools, liquidity analytics, and NFT management functionality.
- Implemented MetaMask-connected user experiences, wallet state handling, KYC-based access control, and blockchain-driven UI behavior.
- Built NFT creation flows, ownership management screens, staking interfaces, and campaign landing pages.
- Managed complex frontend state using Redux Toolkit for user data, blockchain interactions, wallet information, and application workflows.
- Collaborated with designers and product teams to deliver responsive and user-friendly Web3 experiences.
- Improved platform stability and user experience through feature enhancements, testing, debugging, and production support activities.
Technologies: React.js, TypeScript, Redux Toolkit, MetaMask, Wallet Integrations, Web3 Integrations, CSS, SASS
Education
- Master's Degree in Computer Science
Polytechnic National University
2007 - 2012
Upstaffer since July, 2026
