Launch an AI MVP
Turn a rough product idea into a working app with auth, data, GPT behavior, payments or admin flows, and a deployable foundation.
Best for founders and agencies that need a demo clients can actually use.Open for one new client build - Surat, India
I build AI productsclients can demo,sell, and hand over.
I am Raj Mehta, a freelance AI product engineer for founders, agencies, and operators who need GPT apps, voice agents, automations, dashboards, and full-stack products shipped without messy handoff.
- Written scope before code
- Weekly staging demos
- Docs and handoff included
- Remote across US, UK, EU, IST
20+delivered builds
AI workflows, SaaS dashboards, mobile apps, and backend integrations
5client markets
remote work across the US, UK, Greece, South Africa, and India
212+hands-on hours
implementation, debugging, API integration, deployment, and handoff
0-4htypical response
clear async updates with useful overlap for US, UK, EU, and IST teams
Three ways clients usually hire me.
The best portfolio for a freelancer should make the buyer's next step obvious. Pick the lane that matches your situation.
Automate a real workflow
Connect OpenAI, documents, CRMs, n8n, webhooks, voice tools, and internal tools so a repetitive business process runs faster.
Best for teams with manual work, support load, lead follow-up, or document-heavy operations.Rescue and ship a product
Take over an existing React, Next.js, Node.js, Python, or Java codebase, fix the messy parts, and get it production-ready.
Best when a previous build is almost there but not stable enough to sell or hand over.Case studies framed around business outcomes.
Top portfolios do not just list tech. They show the problem, the shipped system, and what the client could do after handoff.
Voice AI call agent
- Challenge
- The client needed an agent that could understand callers, respond naturally, trigger actions during a call, and hand off when automation was not enough.
- Shipped
- Built the call flow with Twilio, Retell AI, Deepgram, PyAudio, GPT-4o, backend actions, and human escalation paths.
- Handoff
- Delivered a production-ready voice workflow with setup notes, integration boundaries, and a clear path for new call scenarios.
- Twilio
- Retell AI
- Deepgram
- GPT-4o
- Node.js
PDF document Q&A
- Challenge
- The team needed users to ask questions against uploaded documents without getting vague, unsupported AI responses.
- Shipped
- Created a retrieval-backed assistant that keeps answers tied to document context and presents the result in a simple business workflow.
- Handoff
- Packaged the system so non-technical users could upload, ask, review, and keep using it after launch.
- OpenAI
- RAG
- LangChain
- Next.js
- PostgreSQL
Operations dashboard
- Challenge
- The business needed structured stock handling, role-based actions, and a dashboard that made operations visible.
- Shipped
- Built admin controls, worker-side flows, backend APIs, task visibility, and practical stock process automation.
- Handoff
- Left the client with a maintainable system structure, documented workflows, and deploy-ready code.
- React
- Node.js
- Database design
- APIs
- Dashboard UX
Clear engagement packages for real project motion.
Each package starts with a written scope. You know what will be built, what is included, and how the work gets handed over.
AI MVP Sprint
2-4 weeksA working product slice you can demo, sell, or validate with real users.
- Next.js app architecture
- OpenAI / GPT feature integration
- Auth, dashboard, database, and API routes
- Production deploy and handoff notes
Automation Build
1-3 weeksA business workflow that runs with fewer manual steps and clearer operator control.
- n8n, webhooks, APIs, and background jobs
- Document Q&A, lead routing, or support automation
- Logging, retries, and failure visibility
- Operator docs and walkthrough
Rescue and Launch
1-2 weeksA stuck or unstable app cleaned up enough to deploy, demo, or continue building.
- Codebase audit and priority fix list
- Bug fixing, API cleanup, and deploy repair
- Performance and UX improvements
- Launch checklist and next-step roadmap
A calm delivery system from first call to launch.
- 01day 1–3
Discover & scope
A short call, then a written scope: what we build, what it costs, what 'done' means. No surprises later — the plan is agreed before any code.
- 02week 1
Design the system
Architecture, data model, API contracts, and the AI behavior spec. You see the shape of the product before the build starts.
- 03weekly demos
Build in the open
Short cycles with a working demo every week on a staging URL. You watch the product grow instead of waiting for a big reveal.
- 04launch + 2 weeks
Ship & hand off
Production deploy, monitoring, docs, and a clean handoff — plus two weeks of post-launch support included in every engagement.
The handoff matters
You should not need me forever after I ship the product.
I build with transfer in mind: documented setup, clear environment notes, readable code, and enough support after launch to keep the handover smooth.
- Working production or staging deployment
- Environment variable and setup documentation
- Readable code structure with important decisions explained
- Walkthrough video or live handoff call
- Two weeks of post-launch bug support
- Next-step roadmap if you want to keep improving
The signal I want clients to remember: clear, useful, shipped.
A great job done. Flexible, expert and great communication.
Nice working with Raj, expert in Next.js and React.js. Dedicated resource.
Raj has been great to work with and has some really good skills and initiative.
OpenAINext.jsNode.jsPythonPostgreSQLTwilion8n
Practical answers for project buyers.
What do you actually build?
AI-powered SaaS products end to end: GPT/LLM integrations, RAG document systems, voice AI call agents, automation pipelines, and the full-stack web or mobile apps around them — Next.js, Node.js, Python, PostgreSQL, deployed to Vercel or AWS.
How do we work across timezones?
I'm based in India (IST) and work with clients in the US, UK, Greece, and South Africa. I keep a 3–4 hour overlap with your working day, respond within 0–4 hours, and everything important lands in writing — Slack, Notion, or email.
How do you price projects?
Fixed price for well-scoped builds, weekly or hourly for ongoing work. Every engagement starts with a written scope and estimate, and you approve it before anything is billed.
What happens after launch?
Two weeks of post-launch support are included: bug fixes, deploy issues, small adjustments. After that you can take the codebase in-house — it's documented and yours — or keep me on a maintenance retainer.
Can you take over an existing codebase?
Yes — a good share of my work is rescuing or extending existing products: fixing bugs, adding AI features, improving performance, and cleaning up deploys on codebases I didn't write.