Full-Stack Web
DevelopmentCustom web apps with React, Angular, Next.js, Laravel & PHP

Since 2015 I have designed databases, built APIs and shipped front ends for custom web applications, and managed the projects that deliver them. One developer, the whole stack, no handoffs.

What full-stack web development includes

Sandeep Kumar has built full-stack web applications since 2015. One engagement covers the whole stack: requirements and architecture, SQL database design, Laravel, CodeIgniter or CakePHP APIs, React, Angular or Next.js front ends, integrations such as Twilio, Stripe and HubSpot, deployment and ongoing maintenance, with project management included so one person owns the delivery.

How I manage projects →

Illustration of a custom business web application dashboard

Database to Dashboard.

Every build starts with the data model. I design the SQL schema, build the Laravel or PHP API around it, and then the React, Angular or Next.js interface your team and customers use, so the whole system is designed to fit together instead of being bolted together later.

What I Build

🧭

Custom Web Applications

SaaS products, internal tools and customer portals built around your workflow instead of a template.

📊

Dashboards & B2B Portals

Data-heavy Angular and React dashboards with real-time updates, role-based access and reporting.

🔌

APIs & Integrations

REST APIs in Laravel or PHP, connected to Twilio, Stripe, PayPal, HubSpot, OpenAI and your existing systems.

🧱

Legacy PHP Modernization

Taking over CodeIgniter, CakePHP or custom PHP apps: bug fixes, version upgrades and gradual refactoring to Laravel.

Illustration of a full-stack technology stack

The Stack.

  • Front end: React, Angular (TypeScript, RxJS), Next.js
  • Back end: Laravel, CodeIgniter, CakePHP, PHP
  • Data: SQL database design and query optimization
  • Integrations: Twilio, Plivo, OpenAI, Stripe, PayPal, HubSpot
  • CMS & commerce: WordPress, headless eCommerce
See the Full Tech Stack

How a Build Runs

01

Scope & Plan

Requirements, data model and milestones are agreed before coding starts, so the database and API are designed once.

02

Build in Sprints

Short iterations pushed to a staging server for your review, with regular progress updates.

03

Launch

Production deployment with monitoring after launch to catch issues under real traffic.

04

Support

Ongoing maintenance, bug fixes and new features as the product grows.

From the Portfolio

B2B Logistics Portal

A unified dashboard tracking 5,000+ real-time shipments that consolidated 3 legacy systems into one application.

Read the case study →

High-Volume DTC Platform

A headless rebuild for an electronics distributor that was crashing under seasonal traffic, reaching a 0.8s average time to interactive.

Read the case study →
★★★★★

"This is our 3rd time working with Sandeep. He is one of the best we've ever found on Fiverr. Always prompt to respond, his work is excellent, and he is proactive to make suggestions for improving on our tasks."

- gordonvw 🇺🇸 United States, via Fiverr

Full-stack development questions

What does a full-stack web developer do?

A full-stack web developer builds every layer of a web application: the database, the server-side code and API, and the user interface in the browser, plus the deployment that ties them together. Sandeep Kumar has worked across the full stack since 2015, with SQL databases, Laravel, CodeIgniter and CakePHP back ends, and React, Angular and Next.js front ends.

Which technologies do you use for web applications?

React, Angular (TypeScript and RxJS) and Next.js on the front end; Laravel, CodeIgniter, CakePHP and plain PHP on the back end; SQL databases; and Twilio, Plivo, OpenAI, Stripe, PayPal and HubSpot for integrations. The stack is chosen to fit your project and team, not the other way round.

Can you take over or modernize an existing PHP application?

Yes. I regularly take over CodeIgniter, CakePHP and custom PHP applications: fixing bugs, upgrading PHP and framework versions, improving slow database queries, and refactoring toward a modern Laravel structure step by step so the application keeps running during the work.

Do you handle deployment and hosting?

Yes. Work is reviewed on a staging server before release, then deployed to production and monitored after launch. I can work with your existing hosting or cloud setup, or recommend one that fits the application.

How do we start a web development project?

Send a short brief through the contact form or Fiverr describing the problem and any technical constraints. You get a reply within 24 hours with questions or a proposed approach; once scope and milestones are agreed through a Fiverr custom offer or a direct invoice, development starts.

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