Freelancer profile translated to English.
Back to original languageAbout Lionel
Senior Backend & Blockchain Engineer with over 5 years of experience on production systems, combining Node.js, TypeScript, REST APIs, cloud/serverless, CI/CD, and smart contracts in Flow and EVM environments.
I focus on backend architecture, API integrations, smart contract integration, blockchain transaction analysis, audit preparation, delivery automation, and deploying reliable products.
On the blockchain side, my experience covers DeFi, tokenization, NFT marketplaces, Uniswap/AMM architecture, DEX integrations, bridges, Cadence, Solidity, Foundry, Hardhat, ethers.js, and Flow/EVM environments.
I also use Claude, Codex/OpenAI, and AI workflows to accelerate implementation reviews, refactoring, testing, and technical documentation. Open to senior backend, blockchain backend, DeFi/tokenization, cloud/API, and AI applied to software delivery roles.
English
Native or bilingual
Portuguese
Native or bilingual
Spanish
Conversational
Remote only
Primarily works remotely
Experience
- ComethBlockchain DeveloperVIDEO GAMES AND ANIMATIONMay 2023 - June 2023 (1 month)Paris, France● Assisted with the launch of OP Stack Bedrock,● Benchmarking and Implementation of a data availability solution,
- ACADEESolidity Blockchain TrainerEDUCATION AND E-LEARNINGMarch 2023 - Today (3 years and 5 months)● Training around twenty web2 developer students in EVM programming | Solidity.● I help web2 developers transition to web3.
- FancrazeBlockchain DeveloperE-COMMERCEApril 2022 - Today (4 years and 3 months)Bombay, India● Development of backend services (AWS Lambda) for the NFT marketplace, enabling users to list their NFTs for sale.● Scalability optimization.● Deployment and testing of NFT, marketplace, and English auction smart contracts.
Recommendations
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Education
- Engineering DiplomaEcole des Mines d'Alès2011
- Master of ScienceUniversidade Federal do Espírito Santo (Oficial)2014Effet de la charge normale et de la taille des particules sur l'usure abrasive de matériaux élastomères utilisés dans l'industrie du traitement minier.
Certifications
- Introduction to Blockchain TechnologiesINSEAD2021