PDF Chatbot with LLaMA-2 & RAG

An AI assistant that answers questions grounded in your PDF content.

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Domain
AI / LLM
Year
2025
Type
Applied build — internal engineering work

This is internal engineering and R&D work, not a client project. It is published to show technical depth — the modelling, evaluation, and tooling behind the AI automation we build for clients. No client is associated with it.

An intelligent chatbot that answers user questions about an uploaded PDF using semantic search and language understanding. It applies a Retrieval-Augmented Generation (RAG) pipeline — retrieving relevant document chunks and providing them to LLaMA-2 — so answers stay grounded in the original content.

Tools & methods

  • LLaMA-2 (7B)
  • LangChain
  • ChromaDB
  • Hugging Face
  • Sentence-Transformer embeddings
Full technical report

Objectives

  • Build a domain-agnostic chatbot for querying PDFs.
  • Use RAG to ground responses and minimize hallucination.
  • Provide relevant context and accurate, grounded answers.

Process

  • Parse and chunk the uploaded PDF; embed chunks and store in ChromaDB.
  • On a question, embed the query and retrieve the most relevant chunks (semantic search).
  • Feed retrieved context + question to LLaMA-2 to generate a grounded answer.
  • Wrap in an upload → ask → history UI with secure accounts.

Results

  • Accurate, context-grounded answers drawn directly from the source PDF.
  • Clean account, upload, chat and history interface.

What we took from it

  • Chunking strategy and embeddings drive retrieval quality.
  • Prompt templates and grounded context are key to reducing hallucination.

From the report

  • PDF Chatbot with LLaMA-2 & RAG overview
    PDF Chatbot with LLaMA-2 & RAG overview

Filter by category

Every project and study. Showing 25 of 26.

Client engagements

  • OpenInterview marketing site shown on a laptop — upload a résumé to generate a shareable video profile
    Client engagement

    US-based HR technology startup · HR technology & recruitment

    OpenInterview

    OpenInterview is a video interview platform that turns a candidate résumé into a recruiter ready profile with a video introduction availability details and one shareable link. Barakode built the product from résumé parsing and video processing to public profiles and Stripe subscriptions.

    Delivered
    4 services
    Timeline
    August 2024 – November 2024
    • React.js
    • Node.js
    • REST API
    • AI résumé processing
    • Cloud storage

    Platform launched and live at openinterview.me, serving job seekers internationally.

    View case study
  • Beyut Libya real-estate platform on a laptop — sign-in screen with the Add New Property wizard behind it
    Client engagement

    Real-estate marketplace operator · Real estate

    Beyut Libya

    Beyut Libya is a bilingual property marketplace for Libya. Buyers can find verified homes with live filters while agents manage their inventory through a secure admin panel. The platform supports residential and commercial property across the country.

    Delivered
    4 services
    Timeline
    October 2024 – January 2025
    • Next.js
    • React.js
    • Node.js
    • REST API
    • MySQL

    Platform live and operating nationwide at beyutlibya.com.

    View case study
  • Gman tailoring platform dashboard shown on screen
    Client engagement

    Growing tailoring & fashion-retail business · Tailoring & fashion retail

    Gman Stitching Platform

    A full-cycle tailoring and order-management platform: customers, measurements, orders, inventory, billing, and accounting in one system. It replaced a PHP/Laravel application that had become too slow to use and too brittle to change.

    Delivered
    3 services
    Timeline
    January 2023 – March 2023
    • React.js
    • Redux
    • Ant Design
    • Node.js
    • Express.js

    Approximately 70% improvement in application response time after the rebuild.

    View case study
  • Barakah Accounts inventory items screen
    Client engagement

    Restaurant operations team · Hospitality & food service

    Barakah Accounts

    A restaurant ERP built to bring orders, stock, billing, reporting, and the day-to-day handover between front-of-house and back-office teams into one working system.

    Delivered
    3 services
    Timeline
    Live product
    • NestJS
    • PostgreSQL
    • Redis

    Live restaurant ERP available at app.barakahaccounts.com.

    View case study
  • Ophir Jewellery purchase orders screen
    Client engagement

    Jewellery business · Jewellery retail & operations

    Ophir Jewellery ERP

    An ERP for a jewellery operation that brings product records, stock, customer activity, order handling, and business reporting into one calmer working view.

    Delivered
    3 services
    Timeline
    Live product
    • NestJS
    • PostgreSQL
    • Redis

    Live jewellery ERP available at ophir.eaquirstech.com.

    View case study
  • Turner 10 sales workspace screen
    Client engagement

    Real-estate operations team · Real estate

    Turner 10 Real Estate ERP

    A real-estate ERP that gives the team one practical place to follow properties, enquiries, availability, client records, and the internal work that supports every deal.

    Delivered
    3 services
    Timeline
    Live product
    • NestJS
    • PostgreSQL
    • Redis

    Live real-estate ERP available at turner10.eaquirstech.com.

    View case study
  • HMS hospital management purchase returns workspace with settlement, credit note, replacement, and refund summaries
    Client engagement

    Hospital operations team · Healthcare administration

    HMS

    HMS brings hospital administration, patient services, billing, pharmacy, and procurement into one operational workspace. Teams can review daily work and follow supplier purchase returns from a clear shared interface.

    Delivered
    3 services
    Timeline
    Hospital project
    • NestJS
    • PostgreSQL
    • Redis
    View case study

Engineering & AI R&D

This is internal and academic engineering work. Each study includes its full technical report.

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