Long Nguyễn · Full-Stack Developer

Full-stack developer. I have 10+ years of experience building web apps, from the UI down to the database. I'm strongest in TypeScript (Vue, Nuxt, React, NestJS), I'm learning Go and ML, and I'm happy to pick up whatever a job needs. I'm based in Saigon/HCMC (UTC+7) and work remotely. I'm available now and can start right away.

• Founder of 71.zone, a software studio in Saigon/HCMC.
• I worked at WegoPro for 4 years (remote) on B2B travel & expense, where I designed the modular monolith.
• Three production framework migrations: Nuxt 2 → Nuxt 4 at WegoPro, Vue 2 class syntax → composition API at Multiplier.finance, and Motorist.sg to Nuxt 2.
• Domains: SaaS, fintech, marketplaces, developer tooling.
• Right now: crewdoku (my own product), gidi (a small on-device ML model I'm training), infra lead at Sankit.vn, and a freelance AI dashboard.
• Projects → · How I work → · Working together →

The product comes first. Architecture, code review, and features or tasks are all there to serve it, never to become a burden on it.

Architecture. I design the data model and the APIs, then follow the work through the whole process: requirements, schema, API, UI, tests, release, and support in production. At WegoPro I designed the modular monolith that the whole team adopted, and I always kept to the boundaries between its modules.

Migrations. I've done three production framework migrations: Nuxt 2 → Nuxt 4 at WegoPro, Vue 2 class syntax → composition API at Multiplier.finance, and a move to Nuxt 2 at Motorist.sg. At WegoPro I used Vue 3 web components as a bridge between the old code and the new, and I migrated the back-office myself. I move in small steps rather than all at once, plan early which old code will be deleted, and write down what changed and why.

Mentoring. At BlockDevs I handled onboarding, code review, and technical interviews. At WegoPro I guided the team on Vue 3 patterns.

Testing. I use Jest, Cypress, and Vitest in production. I write tests for the parts worth protecting instead of chasing a coverage number.

Tech stack. I choose the tool that fits the problem, not the one I know best · strongest in TypeScript: Vue/Nuxt, React in production, Node.js with PostgreSQL and GraphQL · learning Go and ML.

Here are a few honest words from people I've worked with.

he's easily one of the most detail-oriented frontend engineers I know. … He has a sharp sense for tradeoffs, weighing the practical constraints against what would make for the most ideal solution, and consistently lands on the right call.

He has laid a solid foundation for migrating the WegoPro's main web app's Vue and Nuxt2 frameworks to Vue 3 and Nuxt 4 with minimal impact. … His details to documenting the api contracts and schema designs is second to none.

His understanding of Frontend frameworks and browser behaviour runs deep. At WegoPro, he almost single handedly revamped the designs and migrated our admin panel to Nuxt v4 … He remains calm yet focused and agile at times of stress and urgency.

Long is an exceptional Senior Frontend Developer with strong technical expertise and great attention to detail. He consistently delivers high-quality, scalable solutions while collaborating effectively with the team.

Long is a great teammate and really skilled with Vue — he helped me on side projects and always delivered solid, reliable work.

1. Web DeveloperWegoPro (formerly Travelstop)Mar 2022 – Apr 2026
   • Designed the modular monolith the whole team built on: module boundaries, shared libraries, and the integration contracts between apps and APIs.
   • Migrated a large Nuxt 2 / Vue 2 codebase to Vue 3 + Vite using the strangler fig pattern, running Vue 3 web components inside the Nuxt 2 host.
   • Owned the back-office platform on my own: data model, Node.js APIs, PostgreSQL schemas, Stripe billing, auth, multi-step forms, the i18n pipeline, and the AWS serverless infrastructure.
   • Set engineering standards for the team, led code review, handled production incidents, and mentored other developers.
2. Lead Web DeveloperBlockDevsJun 2019 – Jan 2022
   • Led the team and was responsible for taking two fintech platforms to production: Multiplier.finance (DeFi lending) and SuperLauncher (IDO launchpad).
   • Built Node.js/Express services: REST and RPC APIs, auth and sessions, PostgreSQL schemas, queries and indexes, and GraphQL indexing services.
   • Built a reusable integration module used by both products, along with shared Docker environments.
   • Moved the team from Vue 2 to Vue 3 and brought TypeScript + Vite into the project. I also ran the technical interviews and code review.
3. Web DeveloperMotorist.sgDec 2017 – Jun 2019
   • Led the move of the customer platform to server-rendered Nuxt 2, so pages loaded faster and search engines could index them better.
   • Built the marketing site and the internal back-office, including dynamic metadata, structured data, and sitemap generation.
4. Web DeveloperLetterinkMar 2016 – Dec 2017
   • Built and maintained client sites and the company site (HTML5, CSS3, JavaScript, WordPress), covering cross-browser support, on-page SEO, and analytics tags.

I studied computational and applied mathematics at Ton Duc Thang University from 2014 to 2016, in Saigon/HCMC.

Here is a one-page résumé you can print: longnguyen-2026.pdf.

Here is every figure from these notes. Click one to jump to the matching section, or follow the link to see the project running live.

crewdoku, 2026

• About: An offline-first shift-schedule planner. You describe the team and its rules, press Generate, and it builds a schedule that follows the rules and shares shifts fairly. crewdoku.8bu.dev
• Stack: TypeScript, React 19, Vite, Tailwind v4, IndexedDB; HiGHS MILP running in WebAssembly.
• Role: Solo project. I handled the solver integration, rule scoring, the UI and CSV export.

gidi, 2026

• About: A small on-device model that reads short Vietnamese money notes like ăn phở 45k and works out the transaction type, who it was with and the amount. The demo is a notes app that runs the model entirely in the browser, with no server. gidi.8bu.dev
• Stack: Python, PyTorch, Hugging Face Transformers; a 29 MB INT8 ONNX model running in onnxruntime-web; Vite, React 19, shadcn/ui.
• Role: Solo project, and how I'm learning ML. I handled the data and labelling, training, the ONNX export and the browser demo. Model: Hugging Face · Code: github.com/8bu/gidi

cosimi, 2026

• About: The deterministic GraphRAG retrieval engine behind the chat on this page. No LLM is involved when a question is answered, so the same question always gets the same answer.
• Stack: Postgres + pgvector, Hono on Cloudflare Workers, Claude for ingest at build time; the @cosimi/* npm packages.
• Role: Solo project. I handled the retrieval engine, the corpus pipeline, the API and the deploy to Cloudflare Workers. Code: github.com/8bu/cosimi

wegopro, 2022–2026

• About: A B2B platform for corporate travel and expenses, with booking, travel policy, approvals and expenses all in one place (formerly Travelstop).
• Stack: Nuxt 4 / Vue 3 + Vite, TypeScript, Node.js APIs, PostgreSQL, Stripe, AWS serverless.
• Role: Web Developer, 4 years, remote. I wrote the spec for the modular monolith, led the migration from Nuxt 2 to Nuxt 4, and built bookings, policy-change flags, hierarchy approvals, custom fields and onboarding. wegopro.com

multiplier.finance, 2019–2022

• About: A multi-chain DeFi lending protocol in the style of AAVE, where users move real funds through the UI.
• Stack: Vue 3 composition API, TypeScript, Web3.js / Ethers.js, Node.js/Express, PostgreSQL.
• Role: Front-end lead (BlockDevs). I owned the core lending and borrowing flows, including the move from Vue 2 to Vue 3.

superlauncher, 2020–2022

• About: An on-chain IDO launchpad with staking and a marketplace.
• Stack: Vue 3, TypeScript, a custom wallet module built on WalletConnect + Web3.js + Ethers.js, Node.js/Express.
• Role: Core front-end developer from the start of the project. I set the architecture and conventions, fixed WalletConnect bugs upstream, and built the IDO launch, staking and marketplace.

ntwrx, beta

• About: A web3 community that connects creators with brands, to run social media campaigns and pay out on-chain rewards.
• Stack: Nuxt 3, Vue 3, TypeScript, Tailwind, Pinia, Ethers; Ethereum contracts.
• Role: Designer and Web Developer: campaign discovery, Instagram/X engagement tracking, $NTWRX rewards and the brand quest studio. ntwrx.com

Figma résumé template, 2026

• About: A résumé / CV / cover-letter template on the Figma Community. Everything uses auto layout, so when you add or remove a block, the rest realigns itself.
• Stack: Figma, auto layout, components.
• Role: I designed it and published it so that my own CV would be easy to keep up to date. Feel free to copy and edit it. Figma Community

I work remotely or from Saigon/HCMC (UTC+7). I'm available now for full-time, contract, consulting or freelance work, and I can start right away.

What I'm looking for: full-stack work on a product I can own, in whatever stack it runs on. If it means a new language or runtime, I'm happy to learn it.

Get in touch: hvanlong@pm.mecopied to your clipboard · github.com/8bu · linkedin.com/in/8bu

Feel free to start with a message: tell me what caught your eye in these notes, and we'll go from there. Or just ask in the chat →.

I write about the things I make and what I learn along the way.