Blockchain Developer Certification
Intensive 3-month program covering Ethereum and Solidity from the ground up. Built and deployed smart contracts using Hardhat, Truffle, and Foundry across testnets and mainnet.
Alexandre El-Khoury
Software & Blockchain Engineer, Beirut. Mathematician by training.
Alexandre El-Khoury · BeirutTitle pageChapter I
Fig. 1. Enneper surface of order twox(z) = Re(z − z⁵/5, i(z + z⁵/5), 2z³/3)
Chapter I.
Before the chain, there was proof.
I started with proofs, not programs.
Three years of mathematics at Université de Paris: probability, statistics and differential calculus. They are the foundations behind cryptographic primitives and protocol design, and they were my first exposure to programming, through Python, C and data analysis.
A proof is finished only when every line follows from the one before it, every claim earns its next line. I still work that way. When something powers a product, I want to understand how it works from A to Z: frontend, backend, blockchain, AI, infrastructure, and the product design and marketing around them.
That habit is the thread through everything that follows. Each chapter rests on the one before it, the way blocks do.
Chapter II.
The first block.
In 2022 I learned Solidity. That autumn I started my Master's as a work-study: three weeks on the job, one week at school.
change one leaf and the root changes
Back-End DeFi Developer
Built APIs that pulled real-time data from DeFi protocols and automated on-chain transactions. Implemented AML/CFT compliance checks to meet regulatory requirements for a financial services context.
Chapter III.
Building the chain.
For the next two years I kept that rhythm: three weeks shipping in production at Metav.rs, one week of theory at ESGI.
Master of Blockchain Engineering
Two-year deep dive into blockchain engineering, covering EVM internals, ZK proofs, Solana, and Starknet. Combined with production-grade DevOps, CI/CD pipelines, and advanced full-stack development.
Underneath most of it sits one operation, add two points on the curve, get a third: every signature rests on it, on a curve like the one in the margin.
Backend Blockchain Developer
Owned the blockchain infrastructure behind an NFT and metaverse platform. Wrote and deployed smart contracts across multiple chains, built backend analytics pipelines, and kept production systems running for a growing user base.
Shipped production Web3 experiences for enterprise clients including Michelin and Le Bristol, and operated an in-house Ethereum RPC node (Geth).
Chapter IV.
Figures
From October 2024 to September 2025 I worked freelance, as sole technical lead: architecture, development and deployment. These are the products, running.
SPL Token Launcher
Founder. Solo build. Solana. Dec 2024 to present.
Launch your own Solana token in under 2 minutes. Handles token creation, metadata upload to IPFS, and liquidity pool setup. No CLI required.
It has facilitated hundreds of token launches and generated $10K+ in revenue.
React · Node.js · Solana · IPFS · DeFi
CoreX
Founder. Solo build. Mobile, web and AI.
All-in-one platform for fitness coaches to manage scheduling, payments, prospects, and client check-ins. Less admin, more coaching.
A dual-role React Native app for coach and client, with workout logging, QR invites and Apple Health and Google Fit sync, powered by a custom 34-tool AI assistant in English, French and Arabic.
React · React Native · Firebase · Node.js · Stripe
HireWise
Sole technical lead. Freelance.
AI recruitment tool that matches candidates to roles using natural language analysis. Cuts screening time by automating resume parsing and skill extraction.
React · Python · Firebase · AI
TipMe
Crypto tipping on Base L2. Send ETH or USDC tips with sub-cent gas fees. Built with Coinbase smart wallet integration for one-click onboarding.
React · Solidity · Coinbase · Base
Stamply
Digital loyalty card platform replacing paper punch cards. Lives in Apple and Google Wallet. Businesses set up in 3 minutes, customers join in 10 seconds.
React · Node.js · Firebase · Stripe
Fig. 7. Motion design, built in code.
7a is Sovra, where I work. Each loop is a motion piece I built in code.
Chapter V.
Present tense.
Sovra is a DeFi savings platform that lets retail users earn yield through Aave and Morpho without ever touching a wallet.
I was the first engineer hired after the tech lead, to build it from the ground up. Users keep custody through abstracted smart wallets, sign in with Google and never pay gas. I architected the account abstraction layer behind that gasless onboarding, and built the full stack, from the React Native apps and the Next.js frontend to the Express APIs.
Mobile, backend, blockchain: the mathematician's habit, applied to a product.
Contents of the work
- MobileiOS and Android apps in React Native
- WalletsAccount abstraction, Google sign-in, gasless transactions
- YieldAave and Morpho integrations
- PaymentsFiat on and off-ramp, card issuance, end-to-end KYC
- BackendREST APIs in Express, on-chain automations, notifications
- InternalThe admin dashboard
- OperationsDev and production environments, end to end
The toolbox
- BlockchainSolidity, EVM, Solana, Bitcoin, Uniswap, Aave, Morpho, Chainlink, CCTP
- FrontendReact Native, React, Next.js, Tailwind, TypeScript
- BackendNode.js, Express, MariaDB
- InfrastructureAWS
Fig. 1, again.
Q.E.D.
Quod erat demonstrandum. Which was to be shown.
The next block is yours.
Write to alexkhoury@hotmail.com, read the CV, see the code on GitHub or find me on LinkedIn. I am based in Beirut, and always interested in new challenges.
Off hours: markets, crypto news, motion design.