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BaldwinCepeda/README.md

Hi, I'm Baldwin Cepeda 👋

Software Engineer • Web3 Security Engineer

I build secure distributed systems, Ethereum infrastructure, and MEV research tooling.
My work spans blockchain security, DeFi, MEV engineering, and large-scale automation across Polygon, the CUNY Research Foundation, and Avanade (Accenture + Microsoft).

Focus Areas

  • Ethereum client operations (execution + consensus, archival, observability)
  • MEV research: mempool analytics, fork simulations, latency profiling, Flashbots bundles
  • Smart contract security: fuzzing, invariants, reentrancy analysis, upgradability patterns
  • Enterprise security automation: PowerShell/Python pipelines, AD/Entra transformations, CI/CD
  • Data & infra engineering: reliability, telemetry, distributed systems, cloud operations

Web3 Security Engineering

  • Lead workshops on smart-contract security, audit methodology, and exploit patterns
  • Build MEV research bots for bundle simulation, strategy evaluation, and network-latency benchmarking
  • Operate and maintain Ethereum archival nodes with full lifecycle management (upgrades, pruning, monitoring)
  • Contribute to DAO/governance discussions (e.g., Origin Dollar)

Security Automation & Systems Engineering

  • Develop Python/JS automation for identity operations, compliance, and telemetry ingestion
  • Automate AD/Entra ID migrations and remediation workflows (65,000+ directory objects processed)
  • Build PowerShell and CI/CD pipelines to strengthen incident response and auditability
  • Drive reliability engineering efforts across Windows/Linux and cloud environments
  • Build data automation for staffing and capacity forecasting, reducing operational bench by ~25%

Toolbox

Languages: Python, C++17, TypeScript/JavaScript, Solidity, SQL
Blockchain Tooling: Foundry (Forge/Anvil/Cast), Hardhat, Slither, Echidna, Tenderly, Flashbots stack
Infra: Linux (Arch), Ethereum node ops, Docker, system monitoring, incident response
DevOps: GitHub Actions, Azure DevOps, CI/CD, PowerShell, Bash
Cloud: Azure, GitHub Cloud, AWS
Certifications: AZ-204, AZ-900, GitHub Foundations

Writing & Education

I publish technical content on Web3 security, Solidity engineering, MEV research, and Ethereum node operations.
https://baldwincepeda.me

Contact

Email: baldwincepeda@icloud.com
Website: https://baldwincepeda.me
Blog: https://medium.com/@baldwincepeda

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  1. MEV MEV Public

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  2. Ethereum_Node Ethereum_Node Public

    1

  3. Baldwincepeda.github.io Baldwincepeda.github.io Public

    About me

    HTML

  4. MicrosoftStuff MicrosoftStuff Public

    Microsoft Ecosysteem related (Powershell, AD, GraphAPi, Entra, intune and so on

    JavaScript

  5. advanced-programming-fundamentals advanced-programming-fundamentals Public

    Mastery through practice — documenting and implementing core concepts in programming languages, systems, and computer science, continuously expanded as I dive deeper.

    C

  6. simple-arbitrage simple-arbitrage Public

    Forked from flashbots/simple-arbitrage

    Example arbitrage bot using Flashbots

    TypeScript