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Hi πŸ‘‹ I'm Tony Joseph Sebastian

AI & ML-Focused Software Engineer | Distributed Systems & Cloud-Native Architect

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🧠 About Me

I am an AI & ML-focused Software Engineer with 5+ years of experience in Generative AI, Large-Scale Systems, and Full-Stack Engineering.

  • Currently at TD Bank (Toronto, Canada) β†’ building enterprise Generative AI solutions using React, FastAPI, LangChain, LangGraph, and Azure AI.
  • Previously at HP β†’ developed C++/CLI plugins, cloud-integrated scanning platforms, and high-performance multithreaded features.

πŸ’‘ My expertise bridges AI research & systems engineering, with a focus on C++ & Go for distributed AI infra, Azure & Oracle Cloud, and end-to-end ML pipelines.


πŸ› οΈ Tech Stack

πŸš€ Languages & Frameworks

πŸ€– AI/ML

LangChain HuggingFace

☁️ Cloud & Infra

Oracle Cloud

πŸ—„οΈ Databases


πŸ’Ό Work Experience

Software Engineer @ TD Bank, Toronto (2022 – Present)

  • πŸš€ Built LLM-powered enterprise platforms with React, FastAPI, LangChain, LangGraph, and Azure AI.
  • πŸ“Š Created legal document intelligence system with 85%+ accuracy in policy deviation detection.
  • πŸ” Engineered RAG-based conversational assistants with FAISS + LangChain β†’ reducing lookup time from hours β†’ minutes.
  • ⚑ Developed custom MCP (Model Context Protocol) for long-context workflows & dynamic prompt routing.
  • πŸ”„ Optimized LLM latency (30% faster) with caching, CoT prompting & context trimming.
  • πŸ“ˆ Delivered forecasting platforms replacing Excel with MongoDB + ML dashboards.

Tech: React, FastAPI, LangChain, LangGraph, Azure OpenAI, FAISS, MongoDB, Docker, GitHub Actions


Software Engineer @ HP (2018 – 2021)

  • πŸ–¨οΈ Developed C++/CLI plugins integrating HP Scanners with Google Drive, Dropbox, Box, SugarSync.
  • βš™οΈ Built multi-threaded compute workflows with OpenMP (20% performance gain).
  • πŸ”’ Designed REST APIs for large-scale data migration (1M+ records).
  • πŸ–ΌοΈ Implemented image-to-PDF & editing modules, boosting adoption of HP Scan tools.
  • βœ… Automated testing with Jenkins + GoogleTest β†’ 30% reduction in QA effort.

Tech: C++, C#, .NET, WPF, REST APIs, OpenMP, Jenkins, SQL


πŸ“Œ Projects

  • Recipe Recommendation Bot (NLP + Deep Learning) – Grocery image β†’ Recipe suggestion system using CNN + embeddings.
  • Real Estate Image Similarity Search – TensorFlow-based system for apartment image matching.

πŸ“« Connect With Me


✨ Fun Fact: I thrive at the intersection of AI & Systems Design, turning cutting-edge research into production-ready distributed AI infrastructure.

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  1. meetcode meetcode Public

    A LeetCode-style practice app powered by Generative AI. Learn algorithms and data structures with AI-generated problems, hints, and personalized coaching reports. Built with React + TypeScript + Vi…

    TypeScript

  2. cline cline Public

    Forked from cline/cline

    Autonomous coding agent right in your IDE, capable of creating/editing files, executing commands, using the browser, and more with your permission every step of the way.

    TypeScript

  3. 100DaysMLCode 100DaysMLCode Public

    ML notebooks for solving different data problems

    Jupyter Notebook 1

  4. News-Analyzer- News-Analyzer- Public

    An AI based streamlit app for News and latest reserach paper analyzer.

    Python

  5. Excel-Analyzer Excel-Analyzer Public

    An AI based Excel Analyzer

    Python

  6. investhome investhome Public

    InvestHome is a user-friendly web application built with Streamlit that helps you project your retirement savings based on various investment scenarios. It provides a comprehensive set of tools to …

    Python