The latest articles on DEV Community by Muhammad Awais (@mawais021). https://dev.to/mawais021 https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F3850378%2F8c8539d7-7f53-414b-844f-20e8a6a6dd09.png https://dev.to/mawais021 en Muhammad Awais Mon, 30 Mar 2026 03:01:52 +0000 https://dev.to/mawais021/i-built-a-cv-job-matcher-using-langchain-and-groq-llm-in-one-day-5cn0 https://dev.to/mawais021/i-built-a-cv-job-matcher-using-langchain-and-groq-llm-in-one-day-5cn0 <p><strong>What I Built</strong></p> <p>A web app that takes your CV and any job description <br> and instantly tells you:</p> <ul> <li>How well you match (score out of 10)</li> <li>Your strongest skills for that role</li> <li>Your critical gaps</li> <li>A tailored cover letter</li> </ul> <p><strong>## Tech Stack</strong></p> <ul> <li>Python</li> <li>LangChain (document loading + chains)</li> <li>Groq LLM (llama-3.3-70b-versatile)</li> <li>Streamlit (UI + deployment)</li> </ul> <p><strong>## How It Works</strong></p> <ol> <li>User uploads CV as PDF</li> <li>App validates the job description using LLM</li> <li>CV text extracted using PyPDFLoader</li> <li>Prompt sent to Groq LLM with CV + job description</li> <li>Structured analysis returned and displayed</li> <li>Separate button generates tailored cover letter</li> </ol> <p><strong>## What I Learned</strong></p> <ul> <li>LangChain document loaders</li> <li>Prompt engineering for structured output</li> <li>Streamlit session state</li> <li>Deploying on Streamlit Cloud</li> </ul> <p><strong>## Live App</strong></p> <p><a href="https://cv-job-matcher-tcwfdadlgxknlvhwx9cpa2.streamlit.app/" rel="noopener noreferrer">https://cv-job-matcher-tcwfdadlgxknlvhwx9cpa2.streamlit.app/</a></p> <p>**<br> <a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fj1g9abeemk0gkx2ido4f.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fj1g9abeemk0gkx2ido4f.png" alt=" " width="800" height="377"></a>**</p> <p><a href="https://github.com/Muhammad-Awaix/cv-job-matcher" rel="noopener noreferrer">https://github.com/Muhammad-Awaix/cv-job-matcher</a></p> <p>Built this in one day as part of my journey from <br> tutorial consumer to actual builder. </p> <p>Feedback welcome.</p> career llm python showdev