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We are seeking an experienced AI/Chatbot developer to build a construction leadership decision-support chatbot. The system will answer questions using internal project data (WhatsApp exports, emails, PDFs, Excel trackers, meeting minutes) and must return auditable, citation-based answers (source links + excerpts). Here is the product description : [login to view URL] This is a web-based chatbot using a Retrieval-Augmented Generation (RAG) architecture with open-source/local models (no paid APIs such as OpenAI or Anthropic). Primary focus: Data ingestion Retrieval & citation enforcement Leadership Q&A interface Scope of Work The freelancer will be responsible for: Building a data ingestion pipeline for: WhatsApp exports (.txt) Emails (.eml / .mbox / PDFs) PDFs, Word docs, Excel files Creating a vector database and metadata store Implementing a RAG-based chatbot that: Only answers when evidence is found Displays citations (document name, excerpt, date, author) Shows confidence level and “as-of” timestamp Developing a simple web UI (FastAPI/Django + React or similar) Using open-source/local LLMs (Ollama, vLLM, etc.) Enforcing security and role-based access (basic level) Preferred Tech Stack (Flexible) Python LangChain or LlamaIndex FAISS or Qdrant PostgreSQL / SQLite FastAPI or Django Local LLMs (Mistral, Llama, etc.) React / simple frontend Deliverables Working chatbot web application Ingestion pipeline scripts Vector search + citation system Documentation for setup and deployment Sample queries and test cases Source code in GitHub repository Who Should Apply We are looking for someone who has: Built chatbot or RAG applications before Experience with document ingestion and embeddings Experience with open-source LLMs Strong Python backend skills Understanding of citation-based or enterprise AI systems Ability to work independently and propose technical solutions What to Include in Your Application (Required) Please submit: 1. Project Quote Provide: Total estimated cost (USD) Timeline (in weeks) Breakdown by phase (optional but preferred) 2. Short Experience Description (5–8 sentences) Include: Your experience building chatbot or AI applications Tools/frameworks you have used (LangChain, LlamaIndex, etc.) Example of a similar project (brief description) Your role in that project 3. Optional (Nice to Have) GitHub or portfolio links Screenshots or demo links of past chatbot projects Budget Open to proposals. Please submit your best estimate with justification. Project Duration Estimated 4–8 weeks depending on scope and experience. Next Step Shortlisted candidates will be invited for a 30-minute technical discussion.
Project ID: 40189590
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Active 4 mos ago
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66 freelancers are bidding on average ₹221,003 INR for this job

In digging into your project description, it's clear that you need a developer who can handle data ingestion, retrieval and citation enforcement as well as embedding search and chatbot features. With my extensive experience in AI Development, Django, JavaScript, and Python, I am confident in my ability to fulfill all these requirements and more. Notably, I have had the opportunity to design and implement several well-received chatbots and AI applications during my time at SoftwareLinkers. Just last year alone, I accomplished a similar project for an insurance company that needed an AI-driven claims support system. Using my skills in Python-backed technology, we managed data from different sources (WhatsApp messages, email attachmentsl) to provide customers with accurate answers promptly.I leveraged local LLMs like Ollama; technologies that are inline with your needs. Additionally,I possess a strong understanding of citation-based or enterprise AI systems having undertaken projects like yours before. A salient example is of building an information retrieval system for an educational platform which operated on similar principles: data ingestion different file formats (PDFs, Word Docs), building a metadata store. My strong backend developer nd acumen makes me the discerning choice оn this project.
₹250,000 INR in 54 days
6.2
6.2

Hi there, I’ve carefully reviewed the requirements for your GenAI project and I’m confident that my expertise in building NLP pipelines using Hugging Face and LangChain can meet your expectations. My experience includes working with large language models (LLMs) for Retrieval-Augmented Generation (RAG), as well as fine-tuning models with custom datasets to enhance text generation. I’ve successfully completed similar projects where I applied these techniques in Python to build robust, client-specific solutions. I would love the opportunity to discuss how I can leverage my skills to develop a tailored solution for your project. Feel free to take a look at my portfolio to get a sense of the work I’ve done: Portfolio: https://www.freelancer.com/u/webmasters486 Looking forward to hearing from you! Best regards, Muhammad Adil
₹180,000 INR in 14 days
5.4
5.4

Hi there, I’m confident in delivering your construction leadership decision-support chatbot tailored precisely to your requirements. With 7+ years in advanced backend development and AI integration, I’ll create a robust data ingestion pipeline for WhatsApp exports, emails, PDFs, and Excel trackers ensuring seamless input from diverse formats. - Develop a secure, scalable vector database with reliable metadata storage - Build a RAG-based chatbot that enforces citation integrity and displays confidence metrics - Design a clean web UI using FastAPI and React for intuitive leadership Q&A interaction - Utilize open-source LLMs like Mistral and Llama for full control without paid APIs - Provide thorough documentation, deployment guides, and sample queries for smooth handover **Skills:** ✅ Python backend & FastAPI/Django development ✅ LangChain/LlamaIndex integration with FAISS/Qdrant ✅ Open-source LLM deployment & RAG architecture ✅ Citation enforcement and metadata database design ✅ React frontend for responsive UI **Certificates:** ✅ Microsoft® Certified: MCSA | MCSE | MCT ✅ cPanel® & WHM Certified CWSA-2 I’ve led projects involving complex chatbot and AI-driven knowledge retrieval systems, ensuring accuracy and auditability. Ready to start immediately and deliver a tested, production-ready solution in your desired timeframe. Could you specify the expected volume of data and frequency of updates to the chatbot's knowledge base? Best regards,
₹200,000 INR in 42 days
4.7
4.7

Hi, I’m Karthik, a senior AI/ML and backend engineer with 10+ years of experience building enterprise-grade decision-support systems, including RAG-based chatbots with strict citation and audit requirements. I’ve delivered systems where answers must be verifiable, traceable, and defensible—which fits construction leadership use cases perfectly. How I’ll approach this project: Data Ingestion • Pipelines for WhatsApp exports, emails, PDFs, Word, Excel • Metadata extraction (date, author, source, project) • Incremental re-indexing support RAG & Retrieval • Vector DB (FAISS or Qdrant) + metadata store • LangChain / LlamaIndex orchestration • Evidence-first answering: no response without sources • Inline citations (doc, excerpt, timestamp) • Confidence score + “as-of” timestamp Models & Stack • Local/open-source LLMs (Mistral, Llama via Ollama/vLLM) • Python + FastAPI backend • React web UI for leadership Q&A • Basic role-based access & security Deliverables: ✔ Working web-based chatbot ✔ Ingestion scripts + vector search ✔ Citation-enforced responses ✔ GitHub repo + setup/deployment docs ✔ Sample queries & test cases I’ve built RAG systems on internal enterprise data, handled messy documents, and enforced audit-grade answers. Happy to share similar work and provide a clear cost/timeline breakdown. Open to a 30-min technical discussion. – Karthik
₹249,000 INR in 7 days
5.0
5.0

Hi, I can make this local AI-Chatbot RAG project(python/nodejs based) for you using Ubuntu 24.04 LTS My NVIDIA GPU for testing is RTX 4060 /8GB VRAM and as LLM-server I will use Ollama. The local user must work on your PC with Whatsapp-Desktop(not WhatsApp Web in Chrome/Edge). For more details please contact me on messenger Thanks
₹1,500,000 INR in 180 days
4.8
4.8

Hi there, I can build your construction leadership decision-support chatbot using a RAG architecture with open-source/local LLMs, fully capable of ingesting WhatsApp exports, emails, PDFs, Word, and Excel files. The system will return auditable, citation-based answers with document name, excerpt, date, author, and confidence level. I’ll implement a vector database (FAISS/Qdrant) with metadata storage, ensuring retrieval is accurate, evidence-backed, and secure with basic role-based access. The solution will include a data ingestion pipeline, the RAG-based chatbot backend using LangChain or LlamaIndex, and a web interface built in FastAPI/Django with React or a simple frontend. The system will be modular, well-documented, and reproducible, including scripts, vector search, citation handling, sample queries, and test cases. All code will be version-controlled and delivered in a GitHub repository for easy deployment and maintenance. I have experience building enterprise RAG chatbots and document-driven AI applications using Python, LangChain, local LLMs, and vector databases. I’ve designed ingestion pipelines for multi-format documents and implemented citation-based retrieval systems in previous projects. I can deliver a fully functional, tested, and documented solution in 4–6 weeks, providing clear guidance for deployment and future scaling. Regards, Ahmad
₹150,000 INR in 7 days
4.5
4.5

Hello there, I reviewed your project AI Chatbot Developer for Construction Leadership and understood the requirements at a high level. I focus on delivering clear, stable, and maintainable solutions aligned with the actual scope, I can work with Java, JavaScript, Python and follow a clean development process with proper structure and error handling. If this aligns with what you’re looking for, please come to chat to discuss further. Best regards
₹150,000 INR in 7 days
4.4
4.4

With a multifaceted expertise in AI, ML, and NLP backed by a track record of crafting efficient and innovative solutions across web, mobile, and cloud platforms, I am equipped to meet your construction leadership chatbot needs. My skills in deep learning, LLMs, and text analytics align with the task at hand as well as my experience building retrieval augmented generation-based applications. Leveraging open-source LLMs such as LangChain or LlamaIndex will ensure cost-effective deliverables in line with your preferences. My ability to think outside the box combined with my determination to ensure your success even beyond project completion make me the ideal candidate to craft a top-tier web-based chatbot that addresses all your requirements while keeping budgetary constraints in mind.
₹200,000 INR in 7 days
4.2
4.2

Hi there, I am a strong fit because I have built evidence-grounded RAG systems where answers are strictly citation-backed and suitable for leadership decision support. I have hands-on experience ingesting mixed enterprise data sources like WhatsApp exports, emails, PDFs, and spreadsheets into searchable vector pipelines. I work with Python, LangChain or LlamaIndex, FAISS or Qdrant, FastAPI, PostgreSQL, and local LLMs via Ollama or vLLM. I reduce risk by enforcing answer-only-with-evidence logic, attaching citations and timestamps to every response, and keeping ingestion, retrieval, and UI layers cleanly separated. I am available to start immediately and can deliver this in phased milestones over a 4–8 week window. Regards Chirag
₹200,000 INR in 7 days
4.4
4.4

Hi, I’m excited about your project to build a construction leadership decision-support chatbot using a RAG architecture with open-source LLMs. With deep experience in Python backend development and extensive work with LangChain, LlamaIndex, and vector databases like FAISS and Qdrant, I have built scalable chatbots integrating document ingestion pipelines from diverse sources—WhatsApp exports, emails, PDFs, Excel—much like your needs. I will create a robust ingestion system, implement a citation-backed, confidence-scored answer delivery, and deliver a secure FastAPI/React app tailored for leadership Q&A. My approach ensures auditable answers with metadata for transparent decision-making. I propose a phased 6-week timeline, starting with data ingestion, database setup, followed by chatbot functionality, UI development, and comprehensive testing. Documentation and source code in GitHub will be provided. Looking forward to discussing the next steps. Could you please clarify how many different project data sources you expect to integrate initially, and do you have preferred local LLM models for the chatbot? Thanks, Roshan
₹200,000 INR in 25 days
4.0
4.0

✅✅Hello, Expert here for your project!!!✅✅ Drawing from my eight years of full-stack engineering experience, I offer you not only a seasoned AI Chatbot Developer but also a proficient problem solver. My expertise with JavaScript and particularly Python makes me an ideal candidate for building your construction leadership decision-support chatbot. In addition, my familiarity with AI Development jumps out as a crucial skill set for creating an intelligent system that processes and cites meticulous project data. Having built and delivered several functional AI applications in my career, including chatbots, I bring to the table the knowledge and skill your project needs. Projects ranging from document ingestion to employing open-source LLMs like the ones you've listed fit straight into my repertoire. One such project involved developing an AI chatbot that cited sources in real-time, similar to what you need now. A potent combination of technical competence with Python and dedication to quality—managing end-to-end process—I can guarantee timely delivery and a functional, auditable system that will exceed expectations. You can peruse my work on previous projects via GitHub links, where I meticulously document my process and source codes for better praticality. I would immensely like to get acquainted in 30-minute technical discssion to discuss why I am the freelancer suited for this task.
₹222,222 INR in 7 days
3.9
3.9

Hello, With 5+ years of experience in AI development, I've built RAG-based chatbots using LangChain, LlamaIndex, and open-source LLMs like Mistral. I'll create a robust data ingestion pipeline, vector database, and citation-enforced chatbot with a FastAPI/React UI. My approach focuses on modular design, ensuring scalability and maintainability. I'll deliver a secure, role-based system with clear documentation. For samples of similar projects, please message me. Thanks, Adegoke M.
₹150,000 INR in 3 days
3.9
3.9

Hello, thanks for posting this project. I have carefully reviewed your requirements for a construction leadership decision-support chatbot and understand the importance of reliable data ingestion, citation enforcement, and secure leadership Q&A. My experience includes delivering custom RAG-based chatbot solutions leveraging Python, LangChain, LlamaIndex, and vector databases like FAISS and Qdrant. I have built secure, role-aware web applications using FastAPI and React, integrating open-source LLMs such as Mistral and Llama. My recent projects involved ingesting emails (EML, MBOX), WhatsApp/text, PDF, Word, and Excel data into searchable knowledge bases, enabling citation-based responses for enterprise workflows. For your project, I propose: - **Estimated cost:** $9,000 - **Timeline:** 6 weeks total - Weeks 1-2: Data ingestion pipeline and vector DB setup - Weeks 3-4: RAG chatbot implementation with citation and Q&A interface - Weeks 5-6: UI development, security, testing, documentation I will ensure that auditable answers, clear source citations, and user-friendly UI are prioritized, and I am happy to adapt to your preferred stack. Please see my GitHub for relevant examples of chatbot and document retrieval engines (links can be provided on request). Looking forward to collaborating and discussing your project further. Warm regards, Vitalii
₹200,000 INR in 5 days
3.2
3.2

Hi there Having extensive experience as a Python developer, I am enthusiastically confident in my ability to be your ideal choice as an AI/Chatbot freelancer. I've taken part in and successfully delivered numerous past projects that required developing intelligent chatbots using Python and retrieval-based and open-source LLMs, demonstrating my strong command over technologies like Django and FastAPI. A standout aspect of my skill set is a deep understanding of citation-based AI systems, which aligns perfectly with your project requirements. In addition to my technical prowess, my work ethics, such as attention to detail and reliability, have consistently impressed clients. I understand the nuances of construction leadership, making me more than just a developer but a partner who shares the same objectives. Moreover, with proficiency in data ingestion and embbeddings for various file types (PDFs, Word docs, spreadsheets), your valuable project data will be efficiently managed. Through me, you get diligent support for post-deployment documentation and a GitHub repository fully-equipped with source code. My budget estimation is both competitive and fair while ensuring that the deadlines are met rigorously. Let's initiate meaningful conversations about your project so we can iron out any concerns you may have. Best Regards Abdul Rehman
₹200,000 INR in 12 days
3.2
3.2

I can design and build the construction leadership decision-support chatbot you described using a pure open-source RAG architecture, focused on evidence-backed answers, auditability, and leadership-grade trust. I’ve reviewed the product brief and the scope aligns well with systems I’ve built around document intelligence and citation-enforced Q&A. Approach & Stack I’ll implement a robust ingestion pipeline for WhatsApp exports, emails, PDFs, Word/Excel files, and trackers, normalizing metadata (author, date, source, project). Content will be embedded into a vector store (FAISS or Qdrant) with a relational metadata layer (PostgreSQL/SQLite). The chatbot will use local LLMs via Ollama/vLLM (Mistral/Llama) and a strict RAG flow that only responds when grounded evidence is found, returning citations (document name, excerpt, timestamp) plus confidence and “as-of” indicators. A FastAPI backend will expose secure endpoints with basic RBAC, and a simple React UI will provide leadership-friendly querying, citation display, and traceability. No paid APIs will be used. Timeline: ~6 weeks (ingestion → retrieval/citations → UI → hardening & docs) Deliverables: working web app, ingestion scripts, vector search + citation system, tests, and full setup docs in GitHub. I’ve built RAG systems with LangChain/LlamaIndex, local models, and enterprise document pipelines, and I’m comfortable proposing and owning the technical solution end-to-end. Best regards, Amaan Khan L. (CUBEMOONS PVT.)
₹200,000 INR in 7 days
3.3
3.3

Hi there, I’m ready to start your project—you can award it to me and we can move forward immediately. I’ve reviewed the product description and requirements carefully, and this is a strong fit with my experience building RAG-based, citation-enforced AI systems using open-source LLMs for internal decision support. 1. Experience Summary (7 sentences) I’ve built multiple RAG-based chatbots for internal knowledge search, compliance review, and executive decision support. My work includes document-heavy ingestion pipelines (PDFs, emails, spreadsheets, chat exports) with strict grounding and citation requirements. I’ve used LangChain, LlamaIndex, FAISS, Qdrant, PostgreSQL, FastAPI, and local LLMs via Ollama and vLLM (Llama 2/3, Mistral). In a recent project, I designed a chatbot that refused to answer unless verified sources were retrieved, returning quoted excerpts, document metadata, and timestamps. I handled the full backend architecture, vector search tuning, and API design. I’m comfortable enforcing “no hallucination” policies and confidence scoring. I work independently and propose pragmatic, production-ready solutions. Technical Approach (Summary) Python backend (FastAPI) LangChain or LlamaIndex for RAG orchestration FAISS or Qdrant for vector search PostgreSQL / SQLite for metadata & access control Local LLMs only (Mistral / Llama via Ollama or vLLM) React-based lightweight frontend
₹200,000 INR in 7 days
3.4
3.4

With a Master of Science in Software Engineering and over 10 years of experience, I am equipped to be your ideal AI Chatbot developer. Throughout my career, I have consistently demonstrated my ability to build high-performing and scalable web apps using languages such as Python and frameworks like Django and FastAPI - essentially a perfect fit for your project. Moreover, my extensive experience with document ingestion and embeddings aligns perfectly with your data-focused requirements. Over the course of my career, I've also built numerous&RAG-based chatbots so your Leadership Q&A interface would design a familiar ground for me. The tools listed in the scope are no strangers to me either - LangChain, LlamaIndex, FAISS, etc. Beyond just tech competencies, I emphasize building relationships with clients. When you choose me, not only will you get an expert developer but also a partner who values open communication and is committed to delivering high-quality work on time. Open to discuss all details and requirements deeply before starting so that we align on all counts! Don't miss out on these skills! Let me turn your vision into reality by leveraging the best of technology.
₹200,000 INR in 7 days
3.0
3.0

Hi, there. I will build a citation-enforced RAG chatbot using Python, FastAPI, and LangChain or LlamaIndex, with structured ingestion pipelines for WhatsApp, emails, PDFs, Word, and Excel files. Documents will be chunked, embedded, and stored in FAISS or Qdrant with metadata such as author, date, and source to guarantee traceability. Local LLMs via Ollama or vLLM will only generate answers when evidence is retrieved, returning excerpts, confidence score, and as-of timestamp. The backend will expose secure APIs with role-based access and PostgreSQL or SQLite for metadata, while a lightweight React UI will handle leadership Q&A, citations, and history. Retrieval logic will enforce 1 to N source grounding per response and block unsupported answers, ensuring 0 hallucinated outputs. The system will be modular, documented, and designed to scale from 10 to 100,000 documents without re-ingestion. I have built 4 RAG-based enterprise chatbots using open-source LLMs, vector databases, and citation control, reducing manual search time by 35 to 50 percent for decision-makers. If this sounds good, connect in chat and we can start. Thanks, Jaroslav Caprata
₹150,000 INR in 4 days
3.1
3.1

I’ve built RAG-based, citation-enforced chatbots using open-source LLMs, secure ingestion pipelines, and vector databases to answer only from verified evidence. I’ll deliver a reliable, auditable decision-support system with clear citations, confidence indicators, and a clean web UI tailored to leadership use. Muzammil
₹150,000 INR in 1 day
2.5
2.5

Hello Already have something live to show you I am professional mobile software engineer with skills including Web Design, PHP, Website Development, Content Writing, Elementor, HTML, WordPress and Website Design. Please send a message to discuss more about this project. Always happy to hear from you Thanks
₹200,000 INR in 7 days
2.3
2.3

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