Legends of Mitra App, US, Full-time, (Remote from Vietnam, ICT)- Led the backend development of the Legends of Mitra tower defense game with aplay-to-earn model.- Developed APIs for multi-blockchain token exchange, staking, and MetaMask login.- Built marketplace APIs, enhancing NFT transactions with advanced features likesearch, filter, pagination, and sorting.- Ensured comprehensive transaction history storage, capturing all transaction IDsand statuses for user convenience and transparency.- Improved staking/unstaking for faster performance and real-time earnings trackingwith blockchain event synchronization.- Designed dynamic quest-based rewards, aligning with diverse in-game actions likeNFT transactions, upgrades, and milestones. Enabled easy updates and accuratereward distribution with transaction tracking.- Participated in comprehensive testing of APIs, backend, frontend, and blockchainexploration.- Technologies: ExpressJS, MongoDB, RESTful API, ReactJS, Metamask, KlaytnWallet, AWS ES2, IPFS, BSC/Klaytn/Cronos/Algorand Explorer, PubNub, Web3,CaverJs, Draw.io, Github Issues

Car Alert App, Vietnam, Full-time- Led the CarAlert project, promoting safer driving behaviors and reducing insurancefees.- Managed cross-functional teams, refining documentation, use-case scenarios,database design, and API endpoints.Implemented robust code review processes for quality assurance.Quickly acquired React Native skills for critical app features.Fostering an open and collaborative environment, encouraging idea sharing andinnovation.- Engineered algorithms for detecting driving behavior in the Car Alert app.- Collaborated closely with design teams to create seamless web and app UI/UX.- Impact: Simplified complexity, increased accessibility, improved client satisfaction,ensured timely delivery, and fostered an innovation culture.- Technologies: NodeJS. ExpressJS, MongoDB, RESTful API, SocketIO, ReactAdmin, ReactJS, React Native, Google Map, Visual Paradigm, Asana, GoogleSheets.

Fanpass Live, London, UK, Full-time (Remote from Vietnam, ICT)- Led backend development, optimizing databases and real-time interactions for livestreaming. Collaborated cross-functionally for seamless feature integration.- Engineered APIs for real-time mobile app engagement with live streams.- Orchestrated AWS IVS integration for seamless live streaming.- Managed live stream events and security using AWS services.- Improved user experience with dynamic image sizing and AWS Cognito forauthentication.- Collaborated on content recommendation via Amazon Personalize.- Tech Stack: NodeJS, ReactJS, ExpressJS, MySQL, RESTful API, Auth0, AWSCognito/Lambda/Personalize/S3/IVS/SNS/CodePipelineAnswering Legal, London, UK, Full-time, (Remote from Vietnam, ICT)- Assisted a law company in handling client calls.Technologies: ReactJS, NodeJS, ExpressJS, MySQL, RESTful API, AWSLambda/S3/CodePipeline, Airship, Auth0, Github Issues

- Led cross-functional teams to optimize system performance.- Achieved an impressive speed increase from 700k to over 3 million recordsprocessed per day.- Prioritized CPU, RAM, and codebase optimization for a 20TB dataset.- Introduced real-time monitoring for critical data.- Collaborated closely with data analysis leaders to enhance data accuracy.- Crafted strategic plans for performance improvement.- Ensured system stability and scalability.- Efficiently managed data handling processes.- Overcame resource limitations with efficient solutions.- Technologies: Gitlab, Node.js, Express.js, Jest, Mocha, SuperTest, Elasticsearch,MongoDB, Redis, Linux Server, Docker/Docker Compose, Firewall, Microservices,Message Queues, RESTful API, GraphQL, Facebook/YouTube/Instagram APIs,Puppeteer Chromium, Kibana

Fanfare Global App - Singapore- Contributed to feature development for a brand-focused video creation platform.- Feature customized video and audio prior to platform posting- Integrated secure payment solutions through Stripe and PayPal.- Enhanced user engagement with real-time interactive features.- Technologies: NodeJS, ReactJS, Redux, Flux, Bootstrap, MaterialUI, ExpressJS,MongoDB, WebSocket, Paypal SDK, Stripe SDK, Facebook SDK, Amazon WebServices, FFmpeg, AWS S3/EC2/Lambda/CloudFront, RESTful APIFanfare Token Sale - Vietnam, Fulltime- Developed and maintained the Fanfare ICO website, providing information andresources.- Technologies: ReactJS, Redux, Redux-saga, Redux DevTools, Bootstrap,Animate.css, AWS EC2

Homeyz - Vietnam, Fulltime- Improved Homeyz's landing page with multi-language support and additionalfeatures.- Conducted bug fixing and optimizations for a seamless user experience.- Technologies: ReactJS, Redux, Thunk, Bootstrap, Netlify, GitlabVexyIO - Vietnam, Fulltime- Implemented real-time song ordering, liking, and commenting features, along withauthentication logic.- Collaborated closely with the frontend team to seamlessly integrate sockets andAPIs.- Designed user use cases, optimized databases, and integrated Socket.IO forenhanced functionality.- Optimized code generation for unique, uppercase, six-character text-based codes,ensuring scalability and preventing duplications.- Developed APIs for authentication, event management, and user interactions.- Technologies: NodeJS, ExpressJS, MongoDB, Socket.IO, Gitlab, RESTful API,Postman, token authentication