You will get GPT-4o or Claude AI integrated into your web or mobile app
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Top Rated
Project details
You already have an app. It works. But your competitors are shipping AI features and yours are not, and you do not want to rebuild everything to catch up. You do not have to. I will add AI into the app you already own. That could be a button that summarizes a long document in seconds, a search box that understands what the user means instead of only matching exact words, automatic sorting of incoming messages, or an assistant that answers questions about the user's own data inside your app.
I connect your app to the leading AI models, GPT or Claude, and build the feature properly. The answers appear word by word as they are generated, so it feels fast instead of frozen. There are limits and controls on usage, so a handful of heavy users cannot run up a surprise bill.
I am a full stack engineer, so I work inside your existing codebase rather than handing you a separate prototype you then have to figure out how to plug in.
What you get:
A real AI feature, live inside your existing product. Responses that stream in as they are written, so it feels instant. Clear visibility into what you are spending. Clean, documented code your developers can maintain.
I connect your app to the leading AI models, GPT or Claude, and build the feature properly. The answers appear word by word as they are generated, so it feels fast instead of frozen. There are limits and controls on usage, so a handful of heavy users cannot run up a surprise bill.
I am a full stack engineer, so I work inside your existing codebase rather than handing you a separate prototype you then have to figure out how to plug in.
What you get:
A real AI feature, live inside your existing product. Responses that stream in as they are written, so it feels instant. Clear visibility into what you are spending. Clean, documented code your developers can maintain.
AI Algorithms
AdaBoost, Generative Adversarial Network, Large Language Model, Linear Discriminant Analysis, Long Short-Term Memory Network, Multimodal Large Language Model, Recurrent Neural Network, Transformer Model, Variational AutoencoderAI Applications
AI Chatbot, AI Content Creation, AI Mobile App Development, AI Text-to-Speech, AI-Enhanced Classification, AI-Generated Code, Machine Translation, Speech SynthesisAI Development Language
PythonAI Tools
Bing AI, GitHub Copilot, Hugging Face, Jasper AI, PyTorch, ReplitAI Models
ChatGPT, DALL-E, GPT-3, GPT-4, LLaMA, Midjourney AI, OpenAI Codex, WhisperWhat's included
| Service Tiers |
Starter
$150
|
Standard
$400
|
Advanced
$1,200
|
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 10 days |
Number of Revisions | 1 | 1 | 2 |
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 |
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CT
Charity T.
Dec 22, 2025
Website Creation and Design
I hired Ehtisham to add custom features to our React.js application and handle a fairly complex AI integration. The results were above expectations. He was extremely skilled, delivered high-quality work, and communicated clearly throughout the project. The AI was smoothly integrated, and the custom React features worked exactly as needed.
Overall, he was really good, reliable, and exceeded what we hoped for. I would gladly work with him again and highly recommend him to anyone needing advanced React or AI development.
Overall, he was really good, reliable, and exceeded what we hoped for. I would gladly work with him again and highly recommend him to anyone needing advanced React or AI development.
AK
Autif K.
Dec 10, 2025
Implementing JWT in Node React App
I use them regularly for my web troubleshooting projects. I'll likely use them again
LB
Luca B.
Oct 21, 2025
Building the API infrastructure on our current Bubble App
Working with Ehtisham was one of the best experiences I ever had here on this platform. Even before having a collaboration, he gave it all to fully understand the project. And this made the difference, instead of others he knew where we want to go and our vision. On top the communication was professional and he was always ready to jump on a call.
BB
Ben B.
May 7, 2025
Create a "Partnerships" Page on the OLC website
The Partnerships page looks fantastic — clean, clear, and exactly what we needed. Thanks Ehtisham!
RW
RC W.
May 5, 2025
Debug fix of AWS script
Ehtisham is the best engineer and freelancer we have ever worked with on upwork. Incredible talent and communication on all of our projects; highly suggest working with him!
About Ehtisham
Sr. AI Engineer | AI Agents, RAG, LLM Apps | OpenAI, Claude, LangChain
100%
Job Success
Lahore, Pakistan - 8:47 am local time
Most AI freelancers hand you a prototype. I ship the whole product: the agent architecture, the retrieval pipeline, the APIs, the interface, and the cloud infrastructure it runs on. Ten years of full stack engineering is what makes that possible. The AI I build doesn't stay in a notebook. It goes live, and it stays reliable. I also offer data-driven insights to guide your decisions and secure long-term success.
𝗪𝗛𝗔𝗧 𝗜 𝗕𝗨𝗜𝗟𝗗
• AI Agents and Automation: autonomous and human in the loop agents with tool use, function calling, and multi step workflows. LangChain, LangGraph, OpenAI (GPT-4o), Anthropic Claude.
• RAG Systems: retrieval pipelines with embeddings, vector databases (Pinecone, pgvector, Qdrant), semantic and hybrid search, evaluation and hallucination control.
• AI Chatbots: multilingual support and sales assistants on web, WhatsApp, Messenger, and Instagram, trained on your business data.
• LLM Product Features: streaming UX, prompt engineering, model routing, usage metering, and cost optimization inside SaaS products.
• AI Integration and Audit: adding AI to an existing product, including model selection, architecture review, and a realistic cost and performance roadmap.
𝗦𝗘𝗟𝗘𝗖𝗧𝗘𝗗 𝗪𝗢𝗥𝗞
• Built Aiva Stark, a multilingual AI customer support agent that answers on web, WhatsApp, Messenger, and Instagram from a single knowledge base.
• Architected an AI patent search platform for a Japanese research firm, running semantic search across millions of documents with embeddings, Elasticsearch, and GPU autoscaling, while cutting the projected infrastructure cost of the original design by [X]%.
• Developed an AI sales call analysis CRM that transcribes, scores, and summarizes every call automatically.
• Created a legal AI assistant (RAG over statutes and case law) and an AI video generation platform.
𝗕𝗔𝗖𝗞𝗚𝗥𝗢𝗨𝗡𝗗
Founder of a Tokyo registered software and AI studio (a JETRO J-Startup partner) serving Japanese enterprises and international startups, including teams backed by Y Combinator. Engineering foundation: TypeScript, Node.js, Next.js, React, Python, AWS, Firebase.
𝗛𝗢𝗪 𝗜 𝗪𝗢𝗥𝗞
Clear scoping before we start. Honest calls on what AI can and can't do for your use case. Fast communication, and I reply within a few hours. Production quality code, documented and handed over properly.
If you're building an AI agent, adding AI to your product, or need someone to own an LLM feature from idea to deployment, send me a message or an invite and tell me a little about what you're building.
Steps for completing your project
After purchasing the project, send requirements so Ehtisham can start the project.
Delivery time starts when Ehtisham receives requirements from you.
Ehtisham works on your project following the steps below.
Revisions may occur after the delivery date.
Codebase review and feature scoping
I review your app, confirm the feature scope, and choose the right model and integration approach.
AI feature development
I build the feature inside your existing codebase: prompt design, API integration, streaming UI if included.