About me

I turn complex technology into products people can understand and enjoy.

Vietnam gave me my foundation in computer science; Toronto deepened my practice in blockchain. Today I work across interfaces, APIs, and infrastructure to build products that feel clear and dependable.

Illustrated portrait of Leo Tuan Dinh — Engineer, lifelong learner, occasional pixel-self.

The path so far

Experience tree

Select a role to uncover the work, outcomes, and tools behind it.

Develop and maintain a digital-content marketplace across a Next.js frontend, NestJS and GraphQL backend, and asynchronous media-processing services.
- Contribute to migrating a large-scale React frontend to Next.js, introducing server-side rendering and modernizing GraphQL data access with Apollo Client and state management with Zustand.
- Build and improve purchasing, offers, subscriptions, real-time notifications, and digital-asset management workflows.
- Improved Stripe subscription and PayPal payment flows, fixing upgrade, cancellation, and recovery issues.
- Next.js
- NestJS
- GraphQL
- Stripe
- PayPal
Built a multi-chain Web3 platform spanning a Next.js application, NestJS backend, SvelteKit operations portal, and smart contracts.
- Implemented upgradeable token contracts, automated tests, access controls, deployment tooling, and security-audit remediations.
- Built a system to allowlist millions of token holders across 14 networks using cron jobs and Bloom filters.
- Built and deployed a SvelteKit e-commerce storefront integrated with Shopify's Storefront API for product listings, cart management, and checkout.
- Built wallet onboarding, digital-asset management, secure exchanges, referrals, rewards, analytics, and real-time notifications.
- Next.js
- NestJS
- SvelteKit
- Solidity
- Shopify
Built the React interface and administrative dashboard for an NFT marketplace and integrated wallet and smart-contract interactions.
- Co-developed NestJS and GraphQL APIs for marketplace operations, notifications, and smart-contract event tracking.
- React
- NestJS
- GraphQL
- Web3
Built reusable Next.js components and REST APIs for NFT management and smart-contract event tracking.
- Remediated audit findings, expanded unit tests, resolved KYC defects, and improved UI performance through lazy loading.
- Next.js
- REST APIs
- Smart contracts
- Testing
Built React and Next.js interfaces for a DeFi yield aggregator serving 500+ users and reaching $2M+ peak TVL.
- Developed Node.js and PostgreSQL APIs, integrated smart contracts, deployed AWS services, and implemented on-chain data indexing.
- React
- Next.js
- Node.js
- PostgreSQL
- AWS
Researched and implemented a blockchain network using Go and React.
- Go
- React
- Blockchain

Recommendations

I turn complex technology into products people can understand and enjoy.

Experience tree

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