You will get I will integrate OpenAI or Claude LLM into your existing application
Project details
You have an existing application and want to add AI capabilities — a chat feature, a document Q&A system, an AI-powered workflow, or a smart API endpoint. I handle the integration end to end so your team stays focused on your core product.
I have hands-on production experience building LLM-powered features including RAG pipelines, document Q&A systems, and AI-assisted workflows — not tutorial-level integrations. My background includes enterprise software development at Capgemini and active LLM integration work at my current organisation.
I work with FastAPI and Node.js backends. I integrate with what you already have — I will not ask you to rebuild your architecture. Every delivery includes clean, documented, production-ready code you can maintain yourself.
Message me before purchasing if you are unsure which tier fits — I will give you an honest answer.
I have hands-on production experience building LLM-powered features including RAG pipelines, document Q&A systems, and AI-assisted workflows — not tutorial-level integrations. My background includes enterprise software development at Capgemini and active LLM integration work at my current organisation.
I work with FastAPI and Node.js backends. I integrate with what you already have — I will not ask you to rebuild your architecture. Every delivery includes clean, documented, production-ready code you can maintain yourself.
Message me before purchasing if you are unsure which tier fits — I will give you an honest answer.
AI Algorithms
Large Language Model, Transformer ModelAI Applications
AI Chatbot, Conversational AI, Natural Language UnderstandingAI Development Language
PythonAI Tools
Azure OpenAIAI Models
ChatGPT, GPT-3, GPT-4What's included
| Service Tiers |
Starter
$120
|
Standard
$250
|
Advanced
$450
|
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 7 days |
Number of Revisions | 1 | 2 | 4 |
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.
Additional Revision
+$30Frequently asked questions
About Moumi
Backend-Focused Full Stack Developer | FastAPI, Node.js, PostgreSQL
Kolkata, India - 1:12 pm local time
My background spans two corporate engineering roles: Capgemini (global enterprise environment) and Codelogicx Technologies (product-focused startup). Each taught me something different — Capgemini gave me exposure to large-scale codebases, structured delivery, and team-based engineering standards. Codelogicx gave me closer ownership of production features, cloud integrations, and end-to-end delivery cycles.
Both roles were under NDA. What I can describe is the type of systems I worked on:
— REST API design and development across Node.js (Express, NestJS) and Python (FastAPI)
— JWT and AWS Cognito authentication for multi-tenant SaaS applications
— Background job processors handling async queues and scheduled tasks
— Redis-backed caching for high-read API endpoints
— AWS integrations: S3 for storage, SES for email, SQS for async processing
— Full-stack feature work across React.js and Next.js frontends
— Dockerised deployments on production environments
What I deliver on every project:
Backend-first thinking. I design the data model and API contract before writing UI. Clean REST APIs with proper error handling, status codes, and documentation. Secure authentication — JWT, session-based, or cloud-managed, depending on your requirements. Database design across PostgreSQL, MySQL, and MongoDB. Performance optimisation using Redis. Cloud integrations on AWS. Docker-based deployments.
How I work:
I read the requirements, ask the questions that matter, propose a solution before writing code, and deliver with documentation. If something will take longer than estimated, I say so before the deadline — not after.
If you are building a SaaS backend, an internal tool, or an API system that needs to hold up under real usage — let us discuss your project.
Steps for completing your project
After purchasing the project, send requirements so Moumi can start the project.
Delivery time starts when Moumi receives requirements from you.
Moumi works on your project following the steps below.
Revisions may occur after the delivery date.
Revision round
Test together, address any edge cases, and confirm everything works in your environment