Seddik Ben Lamine

Led the architecture and technical design of a privacy-focused Web3 product that enables users to monetize their email addresses and receive rewards for each email received — leveraging Trusted Execution Environments (TEE) to ensure confidentiality. Developed scalable backend APIs using NestJS, and built responsive frontends with React, Vite, and Material UI. Created and maintained SDKs in TypeScript, with full unit and end-to-end testing coverage using Jest, and wrote developer-focused documentation on GitBook. Contributed to smart contract development using Hardhat, and implemented cross-chain functionality across Ethereum, Polygon, and related testnets. Improved CI/CD workflows using Drone, streamlined sandbox testing environments, and helped scale internal tools and infrastructure across multiple SDK and sidechain migrations. Represented iExec as a mentor and judge at international Web3 hackathons, including ETHLisbon 2022, ETHRome 2024, ETHSofia 2024, and ETHBelgrade 2025, providing technical guidance to teams building privacy-preserving and decentralized applications.

Deployed a production-grade Kubernetes blockchain private network on Google Cloud platform. Contributed to smart contracts development using Solidity. Contributed to Phygia dApp development using ReactJS.

Defined project functionalities, actors, workflows, and data structures. Configured and deployed Hyperledger Fabric blockchain network for eight organizations on AWS EC2. Developed chaincode in Go Lang and designed APIs using Express.js for blockchain interaction. Created mobile client application using Flutter for user-friendly access to the system.