Available for remote freelance projects · US / UK / Europe

AI-powered web apps, SaaS and mobile products built to solve real business problems.

I help founders and business teams build, fix and improve production software using React/Next.js, Node.js, Django, PostgreSQL, React Native/Expo and modern AI APIs.

AI + Full Stack product delivery Web + Mobile from one developer Direct communication without agency layers
5+Years building production software
15+Web & mobile projects delivered
1:1Direct technical ownership
Open to select projects
Rohit Kumar, AI and full-stack software developer
Primary positioning AI · React / Next.js · Node / Django
Need a fix?I can diagnose first.
Need a build?Milestone-based delivery.
React / Next.js Node.js / Django AI APIs / RAG React Native / Expo PostgreSQL / Firebase

What I can help you ship

Focused services clients can understand in seconds.

I do not position myself as “everything for everyone.” My core work is AI-enabled software, modern web products and cross-platform mobile apps.

01

AI + Full-Stack Applications

Build useful AI features inside real products—not disconnected demos.

  • OpenAI / Claude API integrations
  • RAG, chat, file workflows and AI search
  • Streaming responses, guardrails and human review
  • React/Next.js frontend + Node/Django backend
02

SaaS & Business Web Development

Production-ready dashboards, portals and workflow systems that are easy to maintain.

  • Next.js / React applications
  • Authentication, roles and permissions
  • APIs, PostgreSQL, payments and integrations
  • Responsive UI for desktop, tablet and mobile
03

React Native / Expo Mobile Apps

Cross-platform apps with clean API integration and practical release support.

  • React Native + Expo development
  • Push notifications and Firebase
  • Auth, API, uploads and offline-aware flows
  • EAS builds and store-ready deployment support
04

Bug Fixes, Rescue & Modernization

When an existing app is slow, broken, difficult to deploy or hard to extend, I can start with diagnosis.

  • Next.js auth, API and deployment issues
  • Performance and database bottlenecks
  • Legacy-to-modern incremental upgrades
  • Production debugging and handover cleanup

Supporting capabilities: Docker · Azure/AWS deployment · Firebase · REST APIs · PostgreSQL · MongoDB · Git · analytics/tracking · server setup · DNS/SSL · SEO-ready technical foundations.

Common client problems

You do not need to know the perfect tech stack before contacting me.

Send the problem, current setup, error or expected outcome. I can help narrow down the technical approach before you commit to a full build.

01

“Our Next.js app has an auth or API issue.”

I can trace middleware, cookies/sessions, backend auth, CORS, API contracts and deployment behavior.

02

“We want to add AI to our existing product.”

I can identify a useful workflow, choose an integration pattern and connect AI to your current frontend/backend safely.

03

“We need an MVP, dashboard or internal portal.”

I can turn the workflow into a scoped web product with roles, data, APIs, reporting and deployment.

04

“We need one app for Android and iOS.”

I can build React Native/Expo features that share code while keeping mobile UX, API and release requirements practical.

Selected case studies

Real business software, not tutorial projects.

These examples focus on the problem, system design and what was delivered. Confidential implementation details are generalized where required.

CharacterBazaar digital asset commerce platform shown on a laptop

Digital commerce platform

CharacterBazaar — commerce for editable animation assets.

Built product discovery, variations, cart flows, tax logic, customer communication and maintainable content/product structure for a specialized digital-product business.

ReactPHPE-commerceSEO
Visit live product
Cross-platform mobile commerce application

React Native mobile product

Cross-platform commerce app with practical browsing and order flows.

Implemented a customer-facing app covering product discovery, category navigation, cart interactions, account flows and API-connected mobile UX.

React NativeExpo-ready workflowAPI Integration
View application

Simple working process

Start with the problem. Scope only what is needed.

You get direct communication with the developer doing the work, clear milestones, reviewable progress and a documented handover.

  1. 01

    Share the problem

    Send the current workflow, screenshots, error, repo structure or desired outcome. No long brief is required to start.

  2. 02

    Diagnosis & practical scope

    I identify likely causes, dependencies, risks and the smallest sensible implementation path.

  3. 03

    Build in milestones

    You review working increments instead of waiting for a large “final delivery” with hidden surprises.

  4. 04

    Deploy & hand over

    Deployment, documentation, environment details and post-launch stabilization are included in the delivery conversation.

Rohit Kumar
Based in India Available for remote international projects

Why clients work with me

Product thinking + hands-on engineering in one person.

I work best when the goal is not simply “write code,” but understand the business workflow and turn it into software that can actually be used, maintained and extended.

Problem-firstI discuss the workflow and failure point before suggesting technology.
Full-stack ownershipFrontend, backend, database, APIs and deployment can stay coordinated.
Real production experienceMy portfolio focuses on operational systems, commerce and mobile products—not demo apps.
Clear communicationMilestones, blockers, decisions and next steps are kept visible.
ReactNext.jsNode.jsDjangoReact NativeExpoPostgreSQLFirebaseDockerAI APIs

Flexible ways to start

You do not need a US$5k project to start a conversation.

Small, well-defined problems can begin as a focused task. Larger builds are scoped in phases so both sides can validate the working relationship.

01Low-risk start

Quick Fix / Technical Audit

Best for a bug, auth issue, broken deployment, performance problem or technical review.

Starting fromUS$150
Clear scopeFast diagnosis
  • Issue reproduction and root-cause analysis
  • Recommended fix or implementation
  • Code changes for scoped problems
  • Handover notes
Send the issue
03Custom build phase

SaaS / Mobile / Business System

Best for a larger web platform, React Native app, internal system or multi-module product delivered in phases.

Typical starting pointUS$2,500+
Phased scopeDirect ownership
  • Architecture and workflow mapping
  • Auth, roles, APIs and core product modules
  • Testing, deployment and documentation
  • Optional ongoing iteration
Plan the first phase
Small projects welcomeUseful for testing fit before a larger engagement.
Milestone-based paymentsPayments align with agreed delivery stages.
Direct communicationYou work with the person implementing the solution.
Scope transparencyDeliverables, assumptions and exclusions stay visible.

Figures above are starting points, not fixed quotes. Final price depends on scope, codebase condition, integrations, data requirements and timeline.

Selected brands and product work

CharacterBazaar Conscious Karma IntegWorkz AmazDraw Animation Studio Jungle Materials

Start with the problem

Tell me what is broken, missing or needs to be built.

You can send a short description, screenshot, error message, current stack or target outcome. I will respond with the most useful next step instead of a generic sales pitch.

Good projects to send
  • AI feature or AI-powered web application
  • Next.js / React bug or feature work
  • SaaS dashboard, portal or internal system
  • React Native / Expo mobile application
  • Existing product that needs modernization or stabilization
Project enquiryShort details are enough to start

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