Available for work

Afolabi Ayomide Emmanuel

I build secure on-chain systems people can trust.

Smart contract engineer shipping production identity protocols, payment infrastructure, and private trading across EVM and Starknet. Security and gas efficiency come first, always.

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Download CV

statusdeployed

focussolidity / cairo

auditedsecurity-first

Projects shipped

Chains shipped

Merged pull requests

AvalancheBaseCeloStarknetMantleStellarAvalancheBaseCeloStarknetMantleStellar

01About

Engineering on-chain systems that hold

I'm a smart contract engineer focused on secure, production-ready blockchain infrastructure. My work spans on-chain identity systems, payment layers, and privacy-preserving trading protocols, always with security and gas efficiency at the core.

I specialize in Solidity and Cairo, with deep experience in EVM internals, rigorous Foundry testing, and gas optimization. I've deployed contracts across Base, Avalanche, Celo, Starknet, Mantle, and Stellar, and built my security foundation through the Cyfrin Updraft auditing curriculum.

Security-first. Every contract is designed to resist attack.

Deep EVM internals: storage, calldata, and execution flow.

Foundry fuzz, fork, and unit testing on every project.

Multi-chain across EVM ecosystems and Starknet with Cairo.

Secure✦

Gas-optimized✦

Audited✦

On-chain✦

Production-ready✦

EVM & Starknet✦

Secure✦

Gas-optimized✦

Audited✦

On-chain✦

Production-ready✦

EVM & Starknet✦

02Selected work

Things I've shipped

Celo

Live

012026

Gambit

Play classic games, stake USDm

Skill-gaming platform on Celo where players stake stablecoins in 1v1 matches across five classic games. Smart contracts hold the pot in escrow and settle on-chain, with winners taking 95%. Free practice against bots, plus leaderboards and tournaments.

95%

Winner payout

Classic games

USDm

On-chain stakes

SolidityCeloUSDmOn-chain EscrowNext.js

022025

Veraflow

On-chain identity & credit protocol

Decentralized identity and lending platform for underbanked workers. Work credentials become soulbound NFTs, and on-chain reputation scoring unlocks collateral-free lending.

Smart contracts

0-1000

Reputation scoring

100%

Test coverage

SolidityAvalancheSoulbound NFTsOpenZeppelinNext.js

032025

Bicvar

Private dark pool trading on Starknet

Privacy-preserving on-chain trading protocol. A commit-reveal scheme built on Poseidon hashing keeps orders confidential, enabling dark pool trading with MEV resistance and no information leakage.

MEV

Resistant by design

Poseidon

Hash commitments

Information leakage

CairoStarknetPoseidon HashCommit-RevealArgent X

Read case study

Live demo

Base

042025 - 2026

Paycrypt

Buy utilities directly on-chain

On-chain payment infrastructure on Base. Smart contracts handled secure transaction execution and user payment flows, built for production reliability and simplicity.

Base

Deployed on Base

Foundry

Fully tested

Solidity

Payment contracts

SolidityBaseFoundryOpenZeppelinEthers.js

052025

EduPay

Pay-per-chapter education platform

Decentralized education marketplace for African learners. Students pay tutors per chapter in cUSD via MiniPay, with most of the revenue going straight to tutors and instant on-chain settlement.

95%

Revenue to tutors

cUSD

Stablecoin payments

Instant

On-chain settlement

SolidityCelocUSDMiniPayIPFSNext.js

Read case study

Live demo Source

More work

Mantle

Security

ChainSentinel

Smart contract auditor + live anomaly feed

Security tooling for Mantle that audits smart contracts and streams a live on-chain anomaly feed, with a watcher that records detections and sends Telegram and Discord alerts.

Case study Live Source

Stellar

StellarMind

AI agent marketplace on Stellar

A marketplace where Claude-powered AI agents buy, sell, and earn autonomously using x402 micropayments on Stellar.

Case study Source

03Open source

Contributions that shipped

Merged contributions to Stellar ecosystem projects through Drips Wave, structured open-source sprints rewarded on-chain. Every contribution below links to the merged pull requests, so the work is verifiable.

Stellar / Soroban4 merged

Grainlify

On-chain bounty and escrow platform on Stellar.

Soroban contract work: event versioning with compatibility tests, an error-code registry, and bounty-escrow risk-flag governance with multi-governor controls and audit events.

My PRs Live Repo

Stellar3 merged

Chioma

Open-source housing protocol on Stellar connecting landlords and renters.

Security and data-privacy backend: KYC encryption at rest, data export, deletion and consent management, structured audit logging, and routing cleanup.

My PRs Live Repo

Stellar / Soroban2 merged

Lance

Freelancer marketplace on Stellar with Soroban smart contract escrow.

Structured JSON logging and wallet-provider integration for the marketplace frontend.

My PRs Live Repo

04Capabilities

What I work with

Smart contract development

SolidityCairoSoroban (Rust)EVM internalsContract architectureUpgradeable contractsOpenZeppelin

Testing & security

FoundryFuzz testingFork testingGas optimizationReentrancy protectionAccess controlCommit-reveal schemes

Web3, AI & integration

Ethers.jsWagmiViemClaude API & AI agentsx402 paymentsFrontend integrationDeployment pipelines

Chains

AvalancheBaseCeloStarknetMantleStellarChainlink oracles

05Track record

Where I've worked

DevCompass

May 2026 - Jun 2026

Claude Certified Architect Program

Selected into DevCompass's Claude Certified Architect program and certified in June 2026
Built production AI applications with Claude, the Claude API, and agents
Covered prompt engineering, tool use, and AI fluency for real-world systems

Paycrypt

Jul 2025 - Mar 2026

Smart Contract Developer

Built and maintained smart contracts for on-chain payment systems on Base
Worked on transaction execution, user payment flows, and contract reliability
Focused on security and simplicity of production payment infrastructure

Cyfrin Updraft

Jan 2025 - Jan 2026

Security Curriculum Student

Completed an industry-leading smart contract security and auditing curriculum
Covered Solidity security, advanced Foundry testing, and real-world vulnerability analysis

ORYX

Oct 2025 - Dec 2025

Student Team Lead

Led a team of students to the Web3 Lagos Conference hosted by Web3Bridge
Led smart contract development for a blockchain-based bounty platform
Owned on-chain reward mechanisms and contract architecture decisions

Web3 Lagos Conference, Web3Bridge

Web3Nova

Mar 2025 - Aug 2025

Blockchain Developer Intern

Built and deployed DApp smart contracts end-to-end
Gained hands-on experience with contract integration and frontend deployment workflows

06Credentials

Certificates & training

Earned

Claude Certified Architect Prep

DevCompass · Jun 2026

Preparation program for Anthropic's Claude Certified Architect certification. Covers building production applications with Claude, the Claude API, prompt engineering, agents and tool use, and AI fluency.

View course

Earned

Starknet Developer Camp

StarkWare / Starknet Foundation · 2025

On-chain NFT certificate awarded to graduates of the Starknet Developer Camp. Covers Cairo smart contract development, Starknet architecture, and deploying production contracts.

View on Starkscan

Earned

Smart Contract Security & Auditing

Cyfrin Updraft · Jan 2025 - Jan 2026

Comprehensive security curriculum covering auditing methodology, Solidity vulnerability patterns, formal verification, advanced Foundry techniques, and real audit case studies.

View achievements

Contact

Let's build something worth trusting.

Open to smart contract roles, security auditing, and freelance engagements. If you're building on-chain and need someone who treats security as non-negotiable, reach out.

afolabiayomide870@gmail.com