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Hadayxinchao/README.md

Hello World, I'm Hha!

Background GIF by Aliciel on Pinterest.

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👋 About Me

Backend Developer with 3 years of experience building scalable systems, data-intensive workflows, and AI-assisted backend services.
Strong background in Ruby on Rails, RESTful architectures, and MLOps/RAG pipelines for production-ready AI features.

Currently working at Adamo Software, contributing to the Magpie Product Information Management platform, AI chatbot systems, and backend automation workflows used in the global tours & activities industry.


🚀 Experience Highlights

🔹 Adamo Software — Backend Engineer (Mar 2023 → Present)

  • Developed scalable backend components for a production PIM platform serving travel operators and resellers
  • Built ingestion pipelines, automated product creation (Viator/GYG/Tripadvisor), and TTD tracking workflows
  • Implemented a production-level AI Chatbot Assistant using RAG + LLMs
    • Natural language query processing (English)
    • Vector embeddings & context retrieval
    • Integration with LLM providers
    • Backend pipelines for accurate and efficient responses
  • Improved dashboard analytics, review statistics, and multi-source synchronization logic
  • Led debugging on major production issues and optimized system performance

🔹 Samsung R&D Vietnam — Software Engineer Intern

Worked on internal development tools and contributed to performance improvements in team modules.


🧠 Featured Projects

🖼️ End-to-End Image Classifier (MLOps)

  • Production-ready MLOps pipeline for image classification
  • Built with PyTorch, Hydra, and DVC for reproducibility
  • CI/CD integration using GitHub Actions & CML for automated model reporting
  • Experiment tracking with MLflow & Weights & Biases

🔐 Password Manager

  • Secure password manager built with Rails 8 + Hotwire - Chrome Extension for autofill
  • Encrypted storage using Active Record Encryption

🌐 Social Network Platform

  • Real-time communication with Action Cable
  • Devise authentication
  • REST APIs with RSpec tests

🎫 Ticket Booking Application

  • Asynchronous workflows with Sidekiq - Docker-based deployment
  • Queue-based architecture for background jobs

💻 Tech Stack

Tech Stack


🤖 AI / MLOps / RAG Skills

  • MLOps & Engineering: DVC, CML, Hydra, MLflow, W&B
  • LLM Integration: OpenAI, local models, Prompt Engineering
  • RAG Systems: Vector databases, Embeddings, Context Retrieval
  • Backend AI: Designing scalable pipelines for AI features

📊 GitHub Stats


🎮 When I'm AFK

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  1. sample_app sample_app Public

    The main sample app for the Ruby on Rails Tutorial

    Ruby 1

  2. PhiVietHoang/ITJobHunter PhiVietHoang/ITJobHunter Public

    TypeScript 3 1

  3. haile1501/Chat-Now-Frontend haile1501/Chat-Now-Frontend Public

    TypeScript

  4. haile1501/ISDCapstoneProject haile1501/ISDCapstoneProject Public

    Java 1

  5. ruby-course-projects ruby-course-projects Public

    All of my Project for study in The Odin Project

    Ruby 1

  6. rails_course_projects rails_course_projects Public

    All of my work on Ruby on Rails Course on The Odin Project

    1