Vatsal Mavani
Available for new projects

I build web apps for startups from UI to server

I am a full stack developer. I work with Next.js, Node, AWS, and AI integrations. If you need someone who can build the product and keep it running in production, that is what I do.

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24 hours
Client rating
4.9 on Upwork
Projects delivered
15+

How I build

Full stack, one developer

Production ready

Frontend

Next.jsReactTypeScript

Backend

Node.jsNestJSPostgreSQL

Data

MongoDBREST APIsAuth

Ops & AI

AWSDockerOpenAI
UI, APIs, databases, deployment—I handle the full path

Trusted on

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Why work with me

I like owning a problem start to finish. Less back-and-forth between frontend, backend, and DevOps teams.

End-to-end builds

I work on the full app React or Next.js on the front, Node or Nest on the back, and the database in between.

DevOps & AWS

Deployments, CI/CD, Docker, and AWS setup so the app stays up when real users show up.

AI integrations

I add AI features where they make sense chat, summaries, automation not because it is trendy.

Selected work

SaaS tools, e-commerce, and internal apps I built for clients what the problem was and what we shipped.

Billing & inventory

Indian Billing Management System

Billing software for Indian businesses—sales bills, purchase bills, GST-style line items, and live product stock counting.

Next.jsNode.jsNestJSPostgreSQLTypeScriptAWS
Read moreReal estate

Real Estate Brokerage Platform

Brokerage management with commission calculations, site and document uploads, and custom roles for brokers, admins, and partners.

Next.jsNestJSMongoDBAWS S3TypeScriptRole-based auth
Read moreMarketplace

Dog Walking Management App

Multi-role app for dog owners, walkers, and super admins—with a central brain that schedules walks automatically.

Next.jsNestJSPostgreSQLNode.jsCron jobsAWS
Read moreReal estate

B2B Real Estate Platform

A property platform for agents and admins—search, listings, uploads, and permissions across web and mobile.

Next.jsNestJSMongoDBAWS (EC2, S3, RDS)
Read more
All projects

Tools I use

The stack depends on the project, but this is what I reach for most often.

Frontend

  • Next.js
  • React
  • TypeScript
  • Tailwind CSS

Backend

  • Node.js
  • NestJS
  • REST APIs
  • PostgreSQL
  • MongoDB

DevOps & AI

  • AWS
  • Docker
  • CI/CD
  • OpenAI API
  • GitHub Actions
4.9 on Upwork · 15+ reviews

What clients say

Feedback from founders and teams I have worked with on Upwork and direct engagements.

“Vatsal took our MVP to production faster than we expected. When real users showed up, the app held up we did not need a rewrite.”

Startup FounderSaaS · Remote · Upwork

“He handled the full stack UI, APIs, and AWS setup. We always knew what was done and what was next.”

Technical Co-founderB2B Platform · US · Direct client

“Our site got faster and search traffic went up within weeks. He understood both the code and why speed mattered for us.”

Product ManagerMedia · India · Contract

Got a project in mind?

Tell me what you are building. I will be honest about whether I am a good fit and what I would do first.

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