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Mahajan-Sachin/README.md

Sachin Mahajan

AI/ML Engineer | Open Source Contributor | B.Tech CSE (AI/ML) @ LPU, 2027

Building production-ready agentic systems and LLM pipelines.


Open Source Contributions

  • TensorFlow (Google) — Fixed numerical instability in ELU/SELU activations using expm1() in C++ Eigen kernels (PR #116947). Resolved float32 underflow in tf.math.sign for complex values (PR #116986, approved by maintainers)
  • pandas (NumFOCUS) — Fixed Categorical.map bug where defaultdict mappings incorrectly replaced missing keys with NaN; merged into pandas 3.1 milestone (PR #65413)

Projects

MediScan AI — Multi-Agent Medical Lab Report Intelligence

  • 7-node LangGraph pipeline with ChromaDB RAG, 6 clinical formulas, self-correcting CrewAI judge loop
  • MD5 caching reduced response time from 69s to under 1s
  • Deployed via Docker on Hugging Face Spaces with GitHub Actions CI/CD
  • Python LangGraph CrewAI FastAPI Groq ChromaDB Docker

Skill-Based Job Recommendation Engine — LLM-Assisted

  • Full-stack Django + PostgreSQL system handling 75+ jobs and 60+ skills
  • Groq LLM for resume parsing and skill gap analysis
  • Deployed on Render via Docker + GitHub Actions
  • Python Django PostgreSQL Groq Docker

JobFit AI — Chrome & Edge Extension

  • Real-time resume-job fit scoring on LinkedIn and Indeed using Groq LLM
  • Cloudflare Workers backend with BYOK support
  • JavaScript Groq API Cloudflare Workers

Phishing URL Detection — ML System

  • XGBoost on 11,000+ URLs, 91.38% accuracy, 0.97 ROC-AUC
  • Streamlit app for real-time prediction, Docker + GitHub Actions CI/CD
  • Python XGBoost Streamlit Docker

Tech Stack

Python LangGraph CrewAI LangChain FastAPI Django ChromaDB PostgreSQL Docker GitHub Actions TensorFlow scikit-learn Groq API


Connect

LinkedIn GitHub Email

Pinned Loading

  1. Skill-matcher Skill-matcher Public

    Python 1

  2. Phishing Phishing Public

    Jupyter Notebook

  3. pandas pandas Public

    Forked from pandas-dev/pandas

    Flexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions, and much more

    Python

  4. tensorflow tensorflow Public

    Forked from tensorflow/tensorflow

    An Open Source Machine Learning Framework for Everyone

    C++

  5. MediScan-AI MediScan-AI Public

    Python