VKVishal KumarFull Stack Developer

Available for full-time remote, contract and freelance work

Vishal Kumar

Full Stack Developer.

I build production web applications end to end: multi-tenant SaaS with Stripe billing, real-time collaboration over Socket.io, background job queues, and AI features powered by the Anthropic Claude SDK. Six applications built end to end, more than ten client projects delivered.

Explore my work Download resume
GitHub ↗ LinkedIn ↗ vishall.kandharee@gmail.com
vishal@portfolio ~ profile.ts
// six shipped products, one developer
const vishal = {
  role:        "Full Stack Developer",
  based:       "Sukkur, Pakistan",
  remote:      true,
  core:        ["Next.js", "TypeScript", "Node.js"],
  data:        ["PostgreSQL", "MongoDB", "Prisma"],
  realtime:    ["Socket.io", "BullMQ", "Redis"],
  payments:    "Stripe + webhooks",
  ai:          "Anthropic Claude SDK",
  studying:    "B.Sc. AI, CGPA 3.71/4.00",
  openTo:      ["full-time", "contract", "freelance"],
};

vishal.ship(); // end to end, every time
6Products built end to end
10+Client projects delivered since 2023
3.71CGPA, B.Sc. Artificial Intelligence
24hTypical reply time to enquiries

About

I ship complete products, not just screens

I am a full stack developer with six production applications built end to end, including a multi-tenant SaaS platform with Stripe billing, Socket.io real-time sync and BullMQ job queues, and an AI-powered route optimisation tool built with the Anthropic Claude SDK.

My day to day is Next.js, TypeScript and the MERN stack, with hands-on work across auth systems (JWT with refresh rotation, NextAuth, OAuth), databases (PostgreSQL, MongoDB, Prisma, Supabase), maps (Leaflet) and cloud deployment on Vercel and Railway.

On freelance projects I own the whole lifecycle: discovery, scoping, architecture, development, deployment and post-launch support. Clients have come back and brought others, which is the part of the record I am proudest of. Alongside the work I am completing a B.Sc. in Artificial Intelligence at Szabist University with a 3.71 CGPA.

See experience Resume (PDF)
  • RoleFull Stack Developer
  • LocationSukkur, Pakistan (UTC+5)
  • AvailabilityFull-time remote, contract or freelance
  • FocusSaaS platforms, dashboards, AI features
  • EducationB.Sc. Artificial Intelligence, Szabist University, expected 2026
  • LanguagesEnglish (professional), Urdu / Hindi (fluent), Sindhi (native)
  • Emailvishall.kandharee@gmail.com

How I work

A predictable path from brief to launch

The same four steps on every project, whether it is a two-week build or a full SaaS platform.

01

Discovery and scope

We agree what the product has to do, who uses it and what success looks like. You get a written scope with milestones before any code is written.

02

Architecture

Data model, auth strategy, third-party services and hosting decided up front, so the build does not stall halfway through on a structural surprise.

03

Build in the open

Work lands in small, reviewable pieces on a live preview URL. You see progress every few days and can redirect early instead of at the end.

04

Launch and support

Deployment, environment configuration, monitoring and a handover walkthrough, then post-launch support while the product settles in.

Technical skills

The stack I build with

Tools I have used in shipped, deployed applications, not just in tutorials.

Frontend

  • React.js
  • Next.js
  • TypeScript
  • JavaScript (ES6+)
  • Tailwind CSS
  • Zustand
  • React Query
  • Framer Motion
  • React Native
  • Chart.js

Backend

  • Node.js
  • Express.js
  • REST APIs
  • JWT + refresh rotation
  • NextAuth
  • OAuth
  • Stripe + webhooks
  • Socket.io
  • BullMQ + Redis
  • Twilio

Databases

  • PostgreSQL
  • MongoDB
  • Prisma ORM
  • Supabase
  • Firebase
  • SQL

AI and maps

  • Anthropic Claude SDK
  • OpenAI API
  • Leaflet
  • Live market data APIs
  • Workflow automation

DevOps and tools

  • Git
  • GitHub
  • Vercel
  • Railway
  • Cloudinary
  • Zod
  • Postman
  • CI/CD

Ways of working

  • End-to-end ownership
  • Clear scoping
  • Type safety
  • Clean architecture
  • Async communication
  • Post-launch support

Selected work

Products that are live, with the source in the open

Every project below is public on GitHub, and five of the six are deployed live. The three flagship builds have a full case study.

Multi-tenant SaaS

Task-Flow

Team task management SaaS with tenant-isolated workspaces, Stripe subscription billing and live collaboration.

Case study Live ↗ Code ↗
  • Complete multi-tenant SaaS with Stripe subscription billing and webhook handling: workspaces are data-scoped at the database level, and RBAC is enforced at both API and UI across three permission tiers (Admin, Manager, Member).
  • Drag-and-drop Kanban board powered by Socket.io, so task updates broadcast instantly to everyone in the workspace with no page refresh.
  • BullMQ and Redis job queue handling email notifications, assignment alerts and scheduled reminders asynchronously, fully decoupled from the API request cycle.
  • Next.js
  • TypeScript
  • Node.js
  • Express.js
  • PostgreSQL
  • Prisma
  • Stripe
  • Socket.io
  • BullMQ + Redis
  • Tailwind CSS

AI product

Route-Master

AI-powered route optimisation that plans the delivery day for solo business owners.

Case study Live ↗ Code ↗
  • Built on the Anthropic Claude SDK: the assistant plans and optimises daily delivery routes, built to replace the planning work local businesses do by hand every morning.
  • Interactive Leaflet map, Stripe subscription billing, Supabase backend, Zustand for client state and Framer Motion for the transitions.
  • End-to-end type safety on Next.js 16 with TypeScript and Zod schema validation.
  • Next.js 16
  • TypeScript
  • Claude SDK
  • Supabase
  • Leaflet
  • Stripe
  • Zustand
  • Framer Motion
  • Zod

Analytics dashboard

SaaS Pulse

A founder command centre for startup metrics.

Case study Live ↗ Code ↗
  • Tracks MRR, churn and user signups with a live activity feed, so a founder can act on what is happening this week rather than last month.
  • Custom JWT auth with role-based access control, scoping what founders and team members can see.
  • Next.js
  • Node.js
  • MongoDB
  • JWT
  • RBAC
  • Tailwind CSS

Fintech

InvestTrack

Investment portfolio tracker with multi-provider OAuth (Google and GitHub via NextAuth), live market data feeds and type-safe PostgreSQL storage through Prisma.

  • Next.js
  • TypeScript
  • PostgreSQL
  • Prisma
  • NextAuth
Live ↗ Code ↗

Marketplace

Room Finder

Two-sided rental marketplace: landlords post listings, tenants search by location and price, with image uploads handled through Cloudinary.

  • React
  • TypeScript
  • Vite
  • Supabase
  • Cloudinary
Live ↗ Code ↗

Mobile

Habit Tracker

Cross-platform React Native habit tracking app for iOS and Android, with daily streaks, an analytics dashboard and a custom Node.js and MongoDB backend.

  • React Native
  • TypeScript
  • Node.js
  • MongoDB
Code ↗

Also built: Weather App (React, Chart.js, Firebase, React Query), a blog app and an expense tracker. More on GitHub.

Experience and education

Where the work comes from

2023 to present

Full Stack Developer, Freelance

Fiverr · Facebook developer communities · WhatsApp referral network · Remote

  • Secured and delivered more than ten client projects across Fiverr, Facebook developer groups and direct WhatsApp referrals, building a steady pipeline on reputation and word of mouth with zero paid advertising.
  • Owned every project end to end: client discovery, scoping, architecture, full stack development, cloud deployment and post-launch support, handled solo.
  • Built a base of repeat clients and inbound referrals across multiple countries by delivering on time, communicating clearly and going beyond the brief.
  • Delivered React.js, Next.js and Node.js solutions for businesses across diverse industries and time zones, adapting to each client's tech requirements and feedback style.

Expected 2026

B.Sc. in Artificial Intelligence

Szabist University, Hyderabad · CGPA 3.71 / 4.00

  • Top GPA Scholarship recipient, second semester.
  • Coursework: machine learning, deep learning, algorithms, data structures and neural networks.

Working together

Questions people ask first

What kind of work do you take on?

Full stack web applications: SaaS platforms, dashboards, marketplaces and internal tools, plus AI features layered onto existing products. Next.js and the MERN stack are home ground.

Are you available full time?

Yes. I am open to full-time remote roles, contract engagements and freelance projects, worldwide. I work from Sukkur, Pakistan (UTC+5) and overlap comfortably with European and Middle Eastern hours, with early overlap for the Americas.

Can you work with an existing codebase?

Yes. I regularly pick up existing React, Next.js and Node projects, map the architecture, then ship features or fix what is broken without rewriting things that already work.

How do projects usually start?

With a short call or a written brief. I come back with scope, milestones and a timeline, and we only start building once that is agreed.

Do you handle deployment and hosting?

Yes. Deployment on Vercel or Railway, environment configuration, database provisioning, domain setup and a handover walkthrough are part of the delivery, not an extra.

What happens after launch?

I stay available for post-launch support: fixes, small improvements and questions. Several clients have come back with follow-on work.

Contact

Let's build something

Tell me what you are building and what you need. Every message lands straight in my inbox and I usually reply within one working day.

Prefer email? Write to vishall.kandharee@gmail.com or message +92 300 0249930 on WhatsApp.