Freelance Full-Stack Developer (Project-Based | Long-Term Collaboration) | Remote

Varun Product Labs is looking for a Freelance AI Full-Stack Developer to build modern AI-powered SaaS, Web, and Mobile Applications for international clients.

This is a project-based opportunity with the potential for long-term collaboration. We're looking for developers who work as full-time freelancers.

## Responsibilities

* Build scalable AI-powered SaaS, Web, and Mobile applications.
* Develop modern applications using React.js, Next.js, Node.js, and TypeScript.
* Integrate AI models such as OpenAI, Claude, Gemini, Grok, and open-source LLMs.
* Build AI chatbots, AI assistants, RAG applications, AI workflows, and AI agents.
* Integrate authentication, payment gateways, third-party APIs, and cloud services.
* Collaborate with UI/UX designers to build production-ready products.
* Write clean, scalable, and maintainable code.

## Requirements

* 4+ years of Full-Stack development experience.
* Must be a full-time freelance developer.
* Strong portfolio, GitHub, or live project links.
* Strong experience with React.js, Next.js, Node.js, Express.js or NestJS, TypeScript, REST APIs, PostgreSQL, MySQL, MongoDB, or Supabase.
* Hands-on experience integrating OpenAI, Claude, Gemini, or similar AI models.
* Experience building AI-powered applications, chatbots, AI agents, RAG, or AI workflows.
* Mobile development experience with Flutter or native iOS (Swift) and Android (Kotlin) is a plus.
* Must have published at least one production app on both the Apple App Store and Google Play Store.

## Additional Skills (Good to Have)

* Experience with LangChain, LangGraph, CrewAI, AutoGen, MCP, or Vercel AI SDK.
* Experience with Vector Databases such as Pinecone, Qdrant, Weaviate, or Supabase Vector.
* Experience with Docker, AWS, Google Cloud, or Azure.
* Experience with Firebase or Supabase.
* Experience integrating Stripe, Razorpay, or other payment gateways.
* Experience with AI automation tools such as n8n, Make.com, or Zapier.
* AI-assisted development experience is preferred.
* Please mention which AI tools you use to speed up development (e.g., Claude, ChatGPT, Cursor, GitHub Copilot, Windsurf, Bolt, v0, Lovable, or similar).

## Compensation

* Fixed-price, project-based collaboration.
* Typical project budgets: USD $500–$3,000+, depending on project scope and complexity.

## Why Join Varun Product Labs?

* Fully remote.
* Flexible work schedule.
* Opportunity to work on international client projects.
* Consistent project opportunities.
* Long-term collaboration.

## Company Website

https://varunproductlabs.com/

## How to Apply

* Portfolio, GitHub, or live project links (Required).
* Resume or Freelancer profile.
* Years of experience.
* Current location.

Applications without a portfolio or GitHub profile will not be considered.