
Jeremy Tong
Verified Expert in Engineering
Node.js Developer
Los Angeles, CA, United States
Toptal member since January 13, 2020
Jeremy graduated from Brown University with dual majors in computer science and economics. He's the owner of a software engineering consultancy called CodeChef Consulting, where he's worked with companies in Web 3, cryptocurrency, edutech, social media, the gig economy, and more. He's a fast learner who can pick up and apply skills in any domain. Jeremy holds himself to an extremely high standard in all aspects of life, especially when collaborating professionally with clients.
Portfolio
Experience
- Node.js - 9 years
- React - 9 years
- React Native - 9 years
- TypeScript - 7 years
- PostgreSQL - 7 years
- Next.js - 7 years
- Tailwind CSS - 5 years
- Figma - 5 years
Preferred Environment
Node.js, React Native, React, Next.js, Vite, Tailwind UI
The most amazing...
...success I've had is leading the development of a top-50 decentralized crypto exchange with over $100 million in liquidity and $4.7 billion in trade volume.
Work Experience
Senior Full-stack Developer
Toptal
- Delivered production, data-driven web applications across multiple Toptal clients, owning the front end through the back-end APIs. Completed 4,000+ hours.
- Built responsive React UIs with Material-UI and Ag-Grid, turning client requirements into composable, performant interfaces.
- Designed event-driven serverless backends on AWS with Lambda, SQS, EventBridge, and DynamoDB, provisioned through CloudFormation.
- Integrated third-party services end-to-end, handling auth flows, webhooks, rate limits, and pagination.
Co-founder | Lead Engineer
CodeChef Consulting LLC
- Delivered complex production software across Web3, applied AI, and mobile, owning each build from architecture to deployment.
- Advised non-technical founders on technical direction, turning architecture and tradeoffs into clear business decisions.
- Built and shipped MVPs from blank repo to production in TypeScript, React, Vue, Node.js, and GraphQL, serving thousands of users.
- Delivered for high-profile clients, including Y Combinator startups and leading Web3 companies.
Senior Front-end Developer
Astroblox, Inc.
- Helped architect a Figma-to-design-system-to-ShadCN code pipeline for the front end, using code generators and combinatorial AI workflows.
- Augmented the Amplitude experiment setup to allow for the advanced feature of local evaluation, allowing for flexible A/B testing that is injected in NextJS middleware before a route is even rendered.
- Improved the performance of NextJS, applying industry best practices to increase LCP and other Lighthouse metrics. Reduced bundle size and optimized imports throughout the app to support slow 3G responsiveness.
Full-stack Developer
Crabel Operations, LLC
- Built AG-Grid visualizations to support unique trading strategies on behalf of traders.
- Architected cron-heavy workflows within a microservices environment to streamline the daily maintenance and admin tasks of traders.
- Built a new style guide of components around Material UI to standardize the design language of the company.
Interim CTO
Juggle LLC
- Rebuilt the entire front-end stack with a significant back-end integration in five months, migrating from Objective-C to React Native. It served 5,000+ monthly users on the iOS/Android App Stores and generated $1 million in volume.
- Generated $200,000 in revenue in 2018, up 800% over the previous year.
- Architected the RoR server with the JSON API data, supporting Stripe payments.
Experience
SaucerSwap Decentralized Exchange
https://www.saucerswap.finance/Partiful
https://getpartiful.com/AddWork Contracting Management
https://apps.apple.com/us/app/addwork/id6740415862Kalo Event RSVP Platform
https://www.joinkalo.com/The Opus App: Lyrics to Literary Text Lesson Builder
Archivs.io
Meowtel Mobile App
http://meowtel.comDestinhaus Research Web App
Knit Website
Juggle Babysitting Platform
Enklu AR Web Editor
Moiio K-pop Platform
https://www.moiio.co/Education
Bachelor's Degree in Computer Science and Economics
Brown University - Rhode Island, United States
Skills
Libraries/APIs
Stripe API, React, Vue, Node.js, REST APIs, Stripe, Google Maps API
Tools
Expo, Claude, Claude Code, Sketch, Figma, Balsamiq, Webpack, Auth0, Google Analytics, Shadcn, Shadcn UI
Languages
JavaScript, TypeScript, HTML, CSS, SQL, GraphQL, Swift, Python, Python 3, Ruby, Objective-C, Sass, Google Apps Script
Frameworks
Material UI, React Native, Ruby on Rails (RoR), Tailwind CSS, Nuxt.js, Next.js, Express.js, Remix, NestJS, Vuetify
Paradigms
Mobile Development, Automation, REST, Microservices Architecture, HIPAA Compliance, Model Context Protocol (MCP)
Platforms
iOS, Amazon Web Services (AWS), Firebase, Azure, Google Cloud Platform (GCP), Vercel, Android, Heroku
Storage
MySQL, PostgreSQL, Google Cloud, Data Pipelines, MongoDB, Microsoft SQL Server
Other
Material Design, Software Architecture, Vite, AI Agents, Front-end, Web Development, Full-stack, Full-stack Development, Multi-tenant Architecture, Multi-tenant SaaS, Startups, Early-stage Startups, Architecture, SaaS, APIs, Fintech, Front-end Development, Back-end, API Integration, Payments, Agentic Coding, Marketplaces, AI-assisted Development, Software Engineering, Cryptocurrency, Front-end Architecture, Software Design, Software Development, User Experience (UX), Back-end Development, Web Applications, Payment Processing, Cross-platform App Development, Gatsby, Analytics, Large Language Models (LLMs), Supabase, Apple Pay, Financial Services, Trading, Data Analytics, Payment APIs, Applied AI, Context Engineering, eCommerce, Artificial Intelligence (AI), API Design, AI Tools, Fractional CTO, Google Material Design, Machine Learning, User Interface (UI), Apollo Server, Tailwind UI, Gemini API, HIPAA, Healthcare Services, Enterprise Software, Agentic AI, FastAPI, Open Source, Ruby on Rails, CTO, Technical Leadership
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