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Building

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@web3cr @Ethereum-Costa-Rica

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JustinCast/README.md

Hi there πŸ‘‹ I'm Justin Castillo

LinkedIn Email

πŸš€ About Me

I'm a Senior Software Engineer at Moody's Insurance with 8+ years of experience building enterprise applications. I have a proven track record of quickly adapting to emerging technologies - from successfully transitioning into blockchain development to now expanding into Generative AI and LLM technologies.

🎯 Current Focus

  • πŸ€– Learning and building with LangChain, OpenAI API, and RAG architectures
  • πŸ“š Completing DeepLearning.AI courses on Prompt Engineering and LLM development
  • πŸ”¨ Building AI-powered applications to solve real-world problems
  • 🌱 Expanding from Full-Stack to AI/ML engineering

πŸ’Ό Professional Experience

Moody's | Insurance

Senior Software Engineer (Jan 2023 - Present)

  • Developing production features for insurance analytics platforms
  • Leading technical initiatives and mentoring team members
  • Exploring AI integration opportunities for the insurance domain

Blockchain Journey

Blockchain Engineer at Evenpedia International & EOS Costa Rica (2020 - 2023)

  • Built consumer-ready DApps and enterprise blockchain solutions
  • Demonstrated ability to rapidly master emerging technologies

πŸ› οΈ Tech Stack

Production Experience

Python JavaScript TypeScript React Vue.js Node.js AWS Docker PostgreSQL

Currently Learning

OpenAI LangChain Prompt Engineering RAG

πŸ”₯ Featured Projects

πŸ€– AI/LLM Projects (In Development)

  • RAG Chatbot: Building a context-aware chatbot using LangChain and OpenAI API
  • Insurance Document Analyzer: Experimenting with LLMs for automated document processing
  • Prompt Engineering Toolkit: Collection of optimized prompts for various use cases

πŸ’» Full-Stack Projects

  • IQ.wiki - Crypto knowledge platform with categorized wikis
  • IQ Dashboard - Analytics dashboard for EOS to ETH bridge

⛓️ Blockchain Projects

  • Various DApps and smart contracts (Solidity, Web3.js)
  • Government-grade security implementations

πŸ“Š GitHub Stats

Justin's GitHub stats

πŸŽ“ Education & Continuous Learning

  • B.S. Computer Engineering - Instituto TecnolΓ³gico de Costa Rica
  • Current Courses:
    • DeepLearning.AI - ChatGPT Prompt Engineering for Developers
    • Building LLM Applications with LangChain
    • RAG Systems Design and Implementation

🌟 What I Bring to the Table

  • Proven Adaptability: Successfully transitioned from traditional web dev to blockchain in 3 months
  • Strong Foundation: 8 years of production experience in enterprise applications
  • Leadership: Technical mentoring and cross-functional collaboration
  • Growth Mindset: Actively learning and building with AI technologies

πŸ“« Let's Connect!

I'm always interested in discussing new opportunities, especially in AI/ML integration with enterprise applications. Feel free to reach out!

  • πŸ’Ό LinkedIn
  • πŸ“§ Email
  • 🌐 Location: Costa Rica πŸ‡¨πŸ‡·

"The best way to predict the future is to build it" - Currently building with AI πŸš€

Pinned Loading

  1. SolidityExamples SolidityExamples Public

    Solidity 3 1

  2. nextjs-ethereum nextjs-ethereum Public

    React-Ethereum interaction through several libraries

    TypeScript 3