I will be your expert typescript, next js, and mern stack developer

J
johnn_sandoval
J
johnn_sandoval
John S
be your expert typescript, next js, and mern stack developer
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be your expert typescript, next js, and mern stack developer
Full Screen
Full Screen
be your expert typescript, next js, and mern stack developerbe your expert typescript, next js, and mern stack developerbe your expert typescript, next js, and mern stack developer

About this gig

High-quality web applications are built on clean architecture, reliable code, and a tech stack designed for performance. That's exactly what I deliver.

What I Offer

  • Custom full-stack applications and modern web platforms
  • Next.js development with SSR, SSG, and ISR for maximum speed
  • MERN stack apps with TypeScript on both frontend and backend
  • REST APIs, authentication systems, and secure user management
  • Dashboards, admin panels, SaaS systems, and custom workflows
  • Performance optimization, debugging, refactoring, and API integrations
  • End-to-end deployment on Vercel, Render, AWS, or DigitalOcean

Tech Stack

Frontend: TypeScript, Next.js, React, TailwindCSS

Backend: Node.js, Express.js, TypeScript

Database: MongoDB, PostgreSQL

Tools: Git/GitHub, Docker, Postman, Prisma/Mongoose

Cloud: Vercel, AWS, Render, DigitalOcean

Why me?

  • 6+ years of real full-stack industry experience
  • Strong engineering background with scalable code practices
  • Excellent problem-solving and debugging skills
  • Transparent, consistent

Your project will be built with precision, performance, and long-term sustainability in mind. Whether its a feature, a full platform, or a custom web app I'll help you out.

  • Programming language

    • JavaScript

  • Expertise

    • Debugging
    • Performance
    • Databases
    • Source control
    • Testing procedures

  • Frontend framework

    • React.js
    • AngularJS
    • Vue.js
    • Next.js

  • Backend framework

    • Spring
    • Express.js
    • Node.js
    • Meteor.js
    • Next.js

Get to know John S

John S
  • FromUnited States
  • Member sinceOct 2025
  • Avg. response time1 hour

  • Languages

    English
I am a Computer Science graduate and full-stack developer with 5 years of experience in building innovative web and mobile applications. My expertise spans Machine Learning, AI, Data Science, and Python development. I’ve successfully delivered projects from simple apps to advanced intelligent systems. I’m passionate about clean, efficient code, teamwork, and meeting client goals with precision. Reliable, dedicated, and always available to deliver top-quality results.

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