John Dyan

More than 10 years of experience with web and app development, 3+ years of Blockchain Space. As a creative & passionate developer, and fast learner with details and high quality.

Senior Full Stack

Engineer with experience delivering SaaS, Android, and backend systems using SvelteKit, Node.js, Python, JavaScript/TypeScript, Supabase, Docker, GitHub Actions, and Vercel. Focused on building and deploying production software across web and mobile environments.

Senior Full-stack Software Engineer at Taymax Group, LP (2025-08 – 2026-03)

Built and deployed a SaaS application with user registration, QR code management, and admin features. Documented the application and CI/CD workflow to support handoff and deployed both staging and production environments via serverless delivery.

• Built and deployed a SaaS application with user registration, QR code management, and admin features using SvelteKit, Node.js, TypeScript/JavaScript, Supabase (PostgreSQL), Docker, GitHub Actions, and Vercel.
• Documented the application and CI/CD workflow to support handoff and deployed both staging and production environments via serverless delivery.

Senior Full-stack Flutter Developer at Nextsense (2024-06 – 2025-06)

Built an Android application that connected to Bluetooth earbuds to collect data for sleep, seizure, and clinical case insights. Developed the native Android component in Java, the UI module in Flutter, and the backend scheduler/database manager in pure Python for time-critical notifications and data handling.

• Built an Android application that connected to Bluetooth earbuds to collect data for sleep, seizure, and clinical case insights.
• Developed the native Android component in Java, the UI module in Flutter, and the backend scheduler/database manager in pure Python for time-critical notifications and data handling.

Full-stack Developer at Freelance (2023-08 – 2024-07)

Delivered multiple freelance software systems, including an Android-based MDM solution, a Windows firmware update tool using Qt/C# with Django, and Android applications tailored to customer requirements. Managed backend deployments on multiple Linux servers at DigitalOcean and reverse-engineered Android and Windows applications using Wireshark for USB and TCP protocol research.

• Delivered multiple freelance software systems, including an Android-based MDM solution, a Windows firmware update tool using Qt/C# with Django, and Android applications tailored to customer requirements.
• Managed backend deployments on multiple Linux servers at DigitalOcean and reverse-engineered Android and Windows applications using Wireshark for USB and TCP protocol research.

Full-Stack (FE-Heavy) Developer at MerixStudio (2021-05 – 2023-03)

Designed, developed and deployed full-stack web applications according to business objectives and needs of various clients with React, Express.js, MySQL, PostgreSQL and MongoDB. Improved performance and SEO for e-commerce applications.

• Designed, developed and deployed full-stack web applications according to business objectives and needs of various clients with React, Express.js, MySQL, PostgreSQL and MongoDB.
• Improved the page speed by 17% for the ecommerce site that generates $21M annually in revenue by implementing Code-Splitting and Optimizing performance with React, GraphQL and Apollo.
• Implemented SEO in React application for e-commerce site with a catalog of 20000+ products leading to an increase in page views per session of 23% with SSR in Next.js and Gatsby.
• Worked on building customer-facing web application with Express.js, Prisma, React, PostgreSQL and Node.js.

Full-Stack Web3 Engineer at Mixbytes Inc (2019-09 – 2021-04)

Web3 integration for NFT marketplace. Built UI components with React and Ant Design. Developed smart contracts for NFT collections. Built backend NFT indexing service.

• Web3 integration for NFT marketplace- Build UI components with React, Ant Design
• Developed the smart contracts for NFT collections
• Build backend NFT indexing service

Front-End Developer at Unicsoft (2017-07 – 2019-08)

Dramatically improved the user experience for over 10,000 users by optimizing client code and refactoring the web app. Built public web application for digital marketing agency with Next.js. Supported migrating the codebase from class components to functional components with modern React features.

• Dramatically improved the user experience for over 10,000 users by optimizing client code and refactoring the web app with jQuery to using React and Redux.
• Brought in shipping confidence for the app and improved the deployment pipeline by implementing a testing harness in Jest and Enzyme covering over 75% of the code configuring linting with ESLint and formatting with Prettier for overall code quality.
• Built public web application for digital marketing agency with Next.js, improving SEO and ranking to increase page views.
• Supported migrating the codebase from class components to functional components with modern React features and libraries including React hooks and React context.

Bachelor of Science in Computer Science – University of Central Florida (2017-05)