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mpaya5/README.md

👋 Hi, I'm Miguel Payá

💫 About Me

I'm a Senior Python Backend Engineer with 6+ years of experience building backend systems, APIs, integrations and automation platforms across fintech, trading, blockchain, data architecture and AI-assisted software modernization.

My strongest background is at the intersection of:

  • Python Backend Engineering
  • Trading Systems & Market-Making Tooling
  • Blockchain Infrastructure & DeFi
  • API Design & System Integration
  • Data Indexing, Automation and Platform Tooling

I have worked on crypto trading platforms, market-making systems, blockchain explorers, protocol indexing, smart contract tooling, enterprise backend services, and AI-assisted modernization platforms.

I'm especially interested in roles and projects related to backend architecture, scalable APIs, blockchain infrastructure, DeFi systems, trading automation, distributed systems and developer tooling.


🚀 What I Work On

Backend Engineering

  • Python backend services with Flask and FastAPI
  • REST APIs, API integrations and platform tooling
  • PostgreSQL, SQLAlchemy and data modeling
  • Microservices, Docker, Kubernetes and cloud-oriented architectures

Trading & Quant Systems

  • Trading automation and strategy tooling
  • Market-making and liquidity-provision systems
  • Crypto exchange integrations
  • Real-time market data with WebSockets
  • Monitoring, account valuation and operational tooling

Blockchain & DeFi

  • Blockchain infrastructure and protocol indexing
  • Smart contract event listeners
  • Hardhat-based testing and local blockchain workflows
  • DeFi prototypes, AMMs and market-making concepts
  • Solidity learning and EVM-based development

AI & Modernization

  • Backend tooling for AI-assisted legacy modernization
  • LLM-based code analysis workflows
  • Technical documentation generation
  • Validation of AI-generated migration outputs

💻 Tech Stack

Languages

Python Solidity JavaScript SQL Bash

Backend & APIs

FastAPI Flask REST API GraphQL

Databases & Data

PostgreSQL SQLAlchemy MongoDB Pandas NumPy

Messaging, Real-Time & Infrastructure

Kafka WebSockets Docker Kubernetes AWS GitHub Actions

Blockchain & Web3

Ethereum Hardhat Web3 DeFi Smart Contracts


📌 Areas of Interest

  • Backend Architecture
  • API Design
  • Trading Systems
  • Market-Making Tooling
  • Blockchain Infrastructure
  • DeFi Protocol Tooling
  • Event-Driven Systems
  • AI-Assisted Developer Tools
  • Software Modernization
  • Distributed Systems

📊 GitHub Stats


🏆 GitHub Trophies


✍️ Dev Quote


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  1. aws_kms_lambda_bsc aws_kms_lambda_bsc Public

    AWS KMS/Lambda-based signing infrastructure adaptation for BSC, focused on secure Web3 backend transaction workflows.

    Python 1

  2. dex-bsc dex-bsc Public

    Python DEX trading automation prototype with multi-chain adapters, Web3 integration, AWS/KMS signing support and continuous market monitoring.

    Python

  3. SupplyChainSmartContract-dApp SupplyChainSmartContract-dApp Public

    Solidity supply-chain dApp prototype for asset tracking, participant management, ownership history and token-based workflows.

    JavaScript 1

  4. fence-test fence-test Public

    FastAPI technical assessment rebuilt as a portfolio backend: PostgreSQL/SQLAlchemy, Alembic, Docker, tests & CI — plus optional Hardhat smart-contract storage via STORAGE_BACKEND.

    Python

  5. adaptive-amm-genlayer adaptive-amm-genlayer Public

    Reference GenLayer Intelligent Contract: live AMM + LLM market-making + Vue dApp. Ollama validators, no API keys. Demo only.

    Python

  6. Dashboard-CryptoStrategy Dashboard-CryptoStrategy Public

    Flask trading dashboard for webhook-based crypto strategy signals, paper trading workflows and Binance API integration.

    Python 2