You will get ChatGPT or Claude API integrated into your website or app
Project details
If you want to add powerful AI capabilities like ChatGPT or Claude into your website, web app, or mobile app, I can build a seamless and fully functional integration tailored to your product.
This is not just API connection it turns your application into an AI-powered system that generates responses, automates tasks, assists users, and improves UX.
Whether you need a smart assistant for SaaS, AI features for your app, or backend automation powered by AI models, I design a clean, scalable, production-ready solution optimized for real-world use.
What I will do:
Integrate OpenAI (ChatGPT) or Anthropic Claude API
Build secure backend API layer
Connect AI with frontend (web/mobile)
Custom prompt engineering
Structured input/output handling
Error handling, rate limiting, optimization
Optional DB or external API integration
Optional memory or RAG system
Deploy & test production
Use Cases:
SaaS chatbot
Automation
Content generation
AI assistants
Search
Summarization
Recommendations
Tech Stack:
OpenAI Claude
Node.js
Python
React
Next.js
PostgreSQL (optional)
REST/GraphQL
AWS/Vercel/Render
This is not just API connection it turns your application into an AI-powered system that generates responses, automates tasks, assists users, and improves UX.
Whether you need a smart assistant for SaaS, AI features for your app, or backend automation powered by AI models, I design a clean, scalable, production-ready solution optimized for real-world use.
What I will do:
Integrate OpenAI (ChatGPT) or Anthropic Claude API
Build secure backend API layer
Connect AI with frontend (web/mobile)
Custom prompt engineering
Structured input/output handling
Error handling, rate limiting, optimization
Optional DB or external API integration
Optional memory or RAG system
Deploy & test production
Use Cases:
SaaS chatbot
Automation
Content generation
AI assistants
Search
Summarization
Recommendations
Tech Stack:
OpenAI Claude
Node.js
Python
React
Next.js
PostgreSQL (optional)
REST/GraphQL
AWS/Vercel/Render
AI Algorithms
Feedforward Neural Network, Large Language Model, Multimodal Large Language Model, Recurrent Neural Network, Transformer ModelAI Applications
AI Chatbot, AI Content Creation, AI Mobile App Development, AI-Generated Code, AIOps, Conversational AI, Natural Language Generation, Natural Language Understanding, Sentiment Analysis, Sequence ModelingAI Development Language
PythonAI Tools
Azure OpenAI, GitHub Copilot, Gradio, Hugging Face, NVIDIA AI Platform, PyTorch, Replit, Streamlit, TensorFlowAI Models
BERT, ChatGPT, DALL-E, GPT-3, GPT-4, LLaMA, OpenAI Codex, Stable Diffusion, WhisperWhat's included
| Service Tiers |
Starter
$200
|
Standard
$400
|
Advanced
$600
|
|---|---|---|---|
| Delivery Time | 3 days | 7 days | 10 days |
Number of Revisions | 3 | 5 | 7 |
AI Model Integration | |||
Batch Normalization | |||
Database Integration | - | ||
Detailed Code Comments | - | ||
Image Upscaling | - | ||
MLOps | - | - | |
Model Deployment | |||
Model Documentation | - | - | - |
Model Monitoring | |||
Model Testing & Optimization | - | - | |
Model Tuning | - | - | |
Natural Language Processing | |||
NLP Tokenization | - | - | - |
Pre-Training | |||
Prompt Engineering | |||
Setup File | - | - | |
Source Code | - |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$50 - $130
Additional Revision
+$50Frequently asked questions
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Aa
Adel a.
Oct 9, 2020
Angular
Saif is a very hardworking developer and cooperative. He works tirelessly.
IC
Ilinca C.
Jul 25, 2020
Full time Angular 8 Delovper
HC
Hywel C.
Jun 2, 2020
Search and 2 tab application
Great person to work with. I would definitely rehire him again. understands the requirements clearly and delivered the quality product on time.
HC
Hywel C.
May 26, 2020
Create Reusable angular library for the search component
Done the job as required which was is given by the design and done the work to complete satisfaction
JA
Jawairia A.
Mar 25, 2020
Contact me today.
Saifullah has good knowledge and skills. I will likely have additional job for him in the future.
About Saifullah
AI Full Stack Developer | AI Agents, AI SaaS, RAG, n8n, Claude, MCP
Woodbridge, United States - 11:10 am local time
Hi, I'm Saif — a full-stack AI developer who builds production-ready AI applications, SaaS products & integrations for founders, agencies & growing businesses.
Over the past 4 years, I've delivered 50+ AI products & full-stack systems for clients across healthcare, SaaS, e-commerce, real estate & agency operations. I work across the entire stack: backend APIs, frontend interfaces, database design, AI workflow integration, and deployment.
My background combines strong software engineering fundamentals with deep, hands-on AI expertise — which is why clients keep coming back when they need to scale or expand their systems.
My focus is on building things that ship and hold up under real users — AI-powered SaaS platforms, intelligent web & mobile applications, RAG-based knowledge systems, AI agents, voice bots & automation workflows that quietly do the work of a small team.
⭐ What I Can Help You Build:
✔️ AI-powered SaaS products — MVP development, full-stack architecture, multi-tenant systems, admin dashboards
✔️ Custom AI agents & multi-agent systems - LangChain, LangGraph, CrewAI, AutoGen
✔️ RAG pipelines & AI knowledge bases with vector databases like Pinecone, Weaviate, Chroma, Qdrant & pgvector
✔️ Full-stack web applications with AI features built in from the architecture up
✔️ Mobile applications with AI capabilities using React Native & Expo
✔️ E-commerce platforms with AI-powered search, recommendations & customer support
✔️ Voice AI agents built on Vapi, Retell AI, ElevenLabs, Twilio & Deepgram
✔️ Workflow automation with n8n, Make , Zapier & custom Python services
✔️ MCP (Model Context Protocol) servers & integrations — connecting Claude & other LLMs to your tools & data
✔️ OpenAI, Anthropic Claude & Gemini API integrations into existing applications
✔️ Custom REST and GraphQL APIs, plus third-party integrations (CRM, CMS, payment gateways, communication tools)
✔️ AI-powered chatbots, customer support systems, and internal copilots
⭐ Tech Stack I Work With:
✔️ Languages & Frameworks: Python, JavaScript, TypeScript, FastAPI, Node.js, Express, NestJS, Next js, React, React Native, Expo
✔️ AI & LLM Tools: LangChain, LangGraph, LlamaIndex, CrewAI, AutoGen, OpenAI API, Anthropic Claude API, Google Gemini, Hugging Face, DSPy
✔️ Vector & Search: Pinecone, Weaviate, Chroma, Qdrant, pgvector, Elasticsearch
✔️ Databases: PostgreSQL, Supabase, MongoDB, Redis, MySQL, Prisma, Drizzle
✔️ Voice & Telephony: Vapi, Retell AI, ElevenLabs, Twilio, Deepgram, Whisper
✔️ Automation: n8n, Make, Zapier, Pipedream, custom Python workers
✔️ Cloud & DevOps: AWS, Vercel, Railway, Render, Docker, GitHub Actions, Cloudflare
✔️ Payments & Auth: Stripe, Paddle, Clerk, Auth0, NextAuth, Supabase Auth
✔️ AI Dev Tools: Claude Code, Cursor, GitHub Copilot, v0, Replit Agent
⭐ Industries I've Worked With:
Healthcare & medical practices, SaaS startups, digital agencies, e-commerce and D2C brands, real estate, fintech, legal services, education & training organizations & B2B service businesses.
⭐ Why Clients Choose Me:
I take ownership of every project, which means I don't just write the code you ask for — I help you think through the architecture, flag potential issues early and make sure what we build can actually scale once real users show up.
I communicate clearly throughout the project with daily or weekly updates, Loom walkthroughs for milestones & direct answers when you have questions. I deliver on agreed timelines and provide proper documentation so your team can maintain and extend the system after we wrap.
I also work AI-native — Claude Code, Cursor, and modern AI dev tools are part of how I ship, which means I move 3–4x faster than traditional development cycles while maintaining production-grade quality. For teams adopting these tools themselves, I also offer Claude Code coaching & consulting.
⭐ How I Work:
We start with a quick discovery call to understand your goals, constraints, and timeline.
I propose a clear scope with weekly milestones and fixed deliverables — no vague open-ended work.
You get daily or weekly progress updates with demo links, Looms, and screenshots so you always know where things stand.
Every project ships with documentation, architecture notes, runbooks, and a support window after delivery.
⭐ Best Fit Clients:
Founders building their first AI product. Agencies that need reliable white-label AI delivery. Operators looking to automate manual workflows. SaaS teams adding AI features to existing products. Companies needing custom MCP integrations connecting LLMs to their internal tools.
Whether you're early-stage & exploring what's possible, or you have a clear scope and need someone to execute, I'd love to hear about what you're working on.
Steps for completing your project
After purchasing the project, send requirements so Saifullah can start the project.
Delivery time starts when Saifullah receives requirements from you.
Saifullah works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements and Architecture Review:
We go through your application stack, AI use case, and technical requirements in detail. The integration approach, prompt strategy, and backend architecture are finalized before any development starts.
Backend API Layer Setup:
The secure backend layer for AI communication is built using Node.js, Express, NestJS, or FastAPI depending on your stack. API key management, environment configuration, and route setup are completed here.