Hai H.
Senior Full-Stack Developer | Next.js, Node.js & AI
Building software is easy. Building the right software is hard. I enjoy working on products where there’s more to think about than just writing code. Over the years, I’ve worked with founders and product teams to build and improve web applications, from early-stage MVPs to complex business platforms. I can take an idea, understand the requirements, figure out the technical approach, and turn it into something that works in production. I’m also comfortable stepping into an existing codebase, understanding how things work, and figuring out what needs to be improved. Some of the things I’ve worked on include: * Payment systems and financial applications * Enterprise platforms and business management tools * Logistics and shipping integrations * CMS platforms serving hundreds of thousands of pages * AI-powered applications My main focus is full-stack development, covering frontend, backend, APIs, integrations, and cloud infrastructure. More importantly, I care about how software is built. I like clean, maintainable code, sensible architecture, and solutions that don’t create unnecessary problems down the road. I work independently, communicate openly, and don’t need every task broken down into tiny instructions. If I see a potential problem or a better way to approach something, I’ll bring it up. If you have a product to build, an existing project that needs attention, or simply need another experienced developer on your team, let’s talk.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $3.9k
Billed in all: $24,455$24k
$650 in the last 6 months
Across 7 contracts
Across 17 contracts
Earnings, last 30 days
Skill rankings: Top 11% in Gatsby.js
Ranked by MRR among everyone on Upwork with the skill.
- #35Gatsby.js318 freelancers · 🇻🇳 #1Top 11%🇻🇳#1 of 6
- #198Nuxt.js1,349 freelancers · 🇻🇳 #4Top 15%🇻🇳#4 of 34
- #488GraphQL3,403 freelancers · 🇻🇳 #11Top 14%🇻🇳#11 of 71
- #609NestJS3,757 freelancers · 🇻🇳 #11Top 16%🇻🇳#11 of 99
- #833RESTful API6,064 freelancers · 🇻🇳 #18Top 14%🇻🇳#18 of 82
- #995Tailwind CSS6,978 freelancers · 🇻🇳 #17Top 14%🇻🇳#17 of 105
- #1,169Vue.js8,267 freelancers · 🇻🇳 #19Top 14%🇻🇳#19 of 177
- #2,552PostgreSQL12,850 freelancers · 🇻🇳 #28Top 20%🇻🇳#28 of 160