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About Me

Senior Fullstack Engineer building end-to-end web applications from database to UI. Proficient in JavaScript/TypeScript ecosystem (React, Next.js, Node.js, NestJS), Golang, and Python, with experience across Web3, healthcare, e-commerce, and EdTech domains.

Skills & Expertise

Frontend

Next.jsReactNuxt.jsVue.jsTypeScriptTailwindCSSChakraUI

Backend

Node.jsNestJSExpress.jsGolangPythontRPCPrismaTypeORM

Database

PostgreSQLMySQLMongoDB

Testing

PlaywrightCypressJestVitest

DevOps

DockerCI/CDAWSMicroservicesKubernetes

Other

RedisKafkaSolanaAnchor

Key Projects

Web3 Applications

Built full-stack dApps on Solana with smart contracts (Anchor), backend APIs (NestJS, Golang) for transaction processing, and React frontends with wallet integrations and real-time on-chain data.

Next.jsNestJSPrismaGolangSolanaAnchor

Healthcare SaaS

Built full-stack features for infusion-center platform using T3 stack (Next.js, tRPC, Prisma), integrated FHIR standards for healthcare data exchange, and established Playwright e2e testing.

Next.jstRPCPrismaPlaywrightLaunchDarklyFHIR

E-commerce Platform

Built one-page checkout platform with Nuxt.js storefronts, Vue.js admin dashboards, and Node.js microservices, scaling to $4M/month revenue.

Nuxt.jsVue.jsNode.jsExpress.jsCypress

Experience

Moonraise

Senior Software Engineer | Tech Lead – Blockchain

Feb 2024 – Present

Full-stack Web3 development on the Solana ecosystem

  • Built full-stack dApps with Next.js frontends and NestJS/Golang backends for international clients
  • Developed Solana programs (Anchor) for randomness, prize pools, and SPL token operations
View details

Endue

Senior Software Engineer

May 2023 – Jan 2024

US healthcare SaaS platform for infusion centers

  • Built full-stack features with T3 stack (Next.js, tRPC, Prisma) for patient scheduling and treatment workflows
  • Integrated LaunchDarkly feature flags enabling controlled rollouts and A/B testing
View details

Depocket

Senior Software Engineer | Tech Lead

Apr 2022 – Mar 2023

Crypto portfolio tracking and on-chain analytics

  • Led team of 4–8 developers building crypto portfolio tracking application
  • Architected backend APIs aggregating on-chain data across multiple EVM chains
View details

LessonBox

Senior Software Engineer | Tech Lead

Apr 2021 – Mar 2022

EdTech platform for digital learning content

  • Led team of 4–8 engineers with sprint planning and technical mentorship
  • Architected NestJS microservices for content management and delivery
View details

UPLUS Solutions

Full Stack Engineer

Jan 2018 – Aug 2020

E-commerce platform for one-page checkout and dropshipping

  • Built full-stack e-commerce platform processing $4M monthly revenue
  • Developed microservices backend handling payments, inventory, and order fulfillment
View details

Let's Work Together

I'm always open to discussing new opportunities and interesting projects.

haihv27@gmail.comConnect on LinkedIn