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Lionel M. — Senior Blockchain & Full-Stack Engineer from South Africa

Lionel M.

Senior Blockchain & Full-Stack Engineer

South Africa 6+ years
Open to offersNew to Platform
Languages
English
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About

Lionel M. S. is a multifaceted Full-Stack & Mobile Engineer with over eight years of experience in developing production systems for web, mobile, and blockchain technologies. Operating out of Cape Town, South Africa, he brings a comprehensive skill set encompassing platforms like Laravel, Node.js, and Ruby on Rails for backend development, and React, Next.js, Vue, and Nuxt for frontend applications. His expertise extends to building cross-platform mobile applications using Flutter. Lionel has a specialized focus on blockchain security, performing smart contract engineering, formal verification, and cryptographic protocol design across platforms like Ethereum and Solana. He is adept in using Solidity, Rust, and Clarity for developing blockchain solutions, with audited projects securing over $20M in user assets. Lionel is also proficient in deploying applications to the cloud utilizing AWS and DigitalOcean, ensuring robust, scalable, and secure solutions for various industries. He founded Peachpy Cloud and Tsoka Travel, demonstrating leadership and innovation in tech startups. His contributions to smart contract security are accentuated by his authorship of "Secure Smart Contracts in Production," a highly regarded guide among developers. With a strong foundation in blockchain and smart contract security, Lionel continues to lead and build resilient, high-performance software solutions.

Experience

  • Founder & CTO

    Peachpy Cloud · 2025 — Present
    Established and lead technical operations, utilizing C#, Flutter, Laravel, DigitalOcean, and MySQL.
  • Full Stack Developer

    Pebble · 2025 — 2025
    Contributed to full-stack development projects using React, Firebase, GCP, and TypeScript.
  • Full Stack Engineer

    Gated · 2024 — 2024
    Developed a full-stack application leveraging Laravel, Vue.js, Ethereum, Solidity, and MySQL.
  • Senior Blockchain Engineer

    Betr · 2024 — 2024
    Constructed a multi-platform ERP system, integrating a C# desktop client, Flutter mobile application, and a Laravel web backend on DigitalOcean. Created secure data synchronization solutions employing AES-256 encryption and RBAC.
  • Blockchain Developer

    HandshakeBets · 2023 — 2024
    Focused on blockchain development using Solidity, Next.js, Polygon, Chainlink, and Web3.js.
  • Full Stack Developer

    Economics Design · 2023 — 2023
    Engaged in full stack development with Nuxt.js, Ruby on Rails, InfluxDB, TypeScript, and AWS.
  • Lead Blockchain Developer

    Innovation Upstream · 2022 — 2023
    Oversaw blockchain development projects employing Solidity, React, Web3.js, Hardhat, BSC, JavaScript, TypeScript, and Node.js.
  • Blockchain Developer

    Optify Finance · 2021 — 2021
    Implemented blockchain solutions with Solidity, JavaScript, Aave, Polygon, and Web3.js.
  • Frontend & Blockchain Developer

    LuckyChip.io · 2021 — 2021
    Developed frontend and blockchain components using React, TypeScript, Solidity, ethers.js, BSC, BRC-20, and Node.js.
  • Blockchain Developer

    InflowMusic & Tokn · 2021 — 2021
    Focused on blockchain development tasks with Solidity, IPFS, Web3.js, JavaScript, and React.
  • Solidity Engineer

    New Nordic Group, Orion Invest, Oroma Invest · 2018 — 2021
    Worked on Solidity engineering for Ethereum, Web3.js, React, JavaScript, and ERC-20 implementations.
  • Founder & Security Lead

    Tsoka Travel · 2016 — Present
    Directed security initiatives and developed applications with Laravel, Rust, TypeScript, Flutter, GCP, MySQL, Cloudflare, and React.
  • Freelance Developer

    Various Startups · 2013 — Present
    Took on freelance development projects utilizing JavaScript, React, Node.js, Laravel, among other technologies as per project requirements.

Skills & Expertise

Education

  • Bachelor of Science
    Midlands State University · 2012 — 2016