BLOCKCHAIN
ENGINEER.

WHAT I DO.
Helping Web3 teams build secure DeFi protocols.
Smart Contract Audit.
Full-Stack dApps.
Your next Freelance Web3 Engineer.
AVAILABILITY.
Remotely, around the world.
Seoul, South Korea based.
Freelance contracts.
French.
FOUNDING ENGINEER. FREELANCER. BUILDER.
Co-Founder & CTO @ Fiverse.
Freelance Blockchain Engineer.
X / TwitterFiverse

[ CORE OF MY WORK ]

1.
BLOCKCHAIN ENGINEERING
2.
FULLSTACK DEV
3.
AI AGENT DEVELOPMENT
Blockchain visualization
Fiverse
Data dashboard
S-Wall.E - Smart Wallet
Rodolphe Dupuis
About Me
Code on screen
AMM - DeFi
Abstract tech
Helm - Governance Vault

Meet Rodolphe

I'm Rodolphe, a French DeFi & Full-Stack Blockchain Engineer currently based in Seoul. I specialize in designing and shipping secure Ethereum-based protocols — AMMs, vaults, smart wallets, and agent infrastructure — blending security with strategy to elevate Web3 projects.

SoliditySmart Contract AuditsDeFi ProtocolsFull-Stack dAppsSecurity & TestingFoundryHardhatReactNext.jsTypeScriptNode
CurrentlyFreelance
Full-Stack Blockchain Engineer
CurrentlyFiverse
Co-Founder & CTO
2023–24Sopra Steria Group
Software Engineer
2019–23Startups
Software Engineer
Latest Works
DeFi services

Services

Helping Web3 teams build secure DeFi protocols that captivate users and stand the test of battle. Available full remote, any time zone.

Protocol DevelopmentSmart Contract AuditsDeFi ArchitectureFull-Stack dAppSecurity Testing
Grab a CoffeeSee Projects

Protocol Development

Designing and shipping secure AMMs, vaults, lending protocols, and governance systems — from architecture to production deployment.

Smart Contract Audit

Comprehensive security reviews with threat modeling, fuzz testing, and invariant analysis — turning first impressions into lasting trust.

Full-Stack dApp

Building wallet-connected frontends with real-time data, subgraphs, and analytics dashboards that connect users to your protocol.

Agent Infrastructure

On-chain identity, reputation systems, and composable primitives for the next generation of AI agent ecosystems. New generation payment system with x402.

AMM Design
Vault Architecture
Governance Systems
Security Audits
Token Engineering
Cross-Chain
AMM Design
Vault Architecture
Governance Systems
Security Audits
Token Engineering
Cross-Chain
AMM Design
Vault Architecture
Governance Systems
Security Audits
Token Engineering
Cross-Chain
AMM Design
Vault Architecture
Governance Systems
Security Audits
Token Engineering
Cross-Chain
Selected work

Projects

SolidityBaseRWATokenizationERC3643

Fiverse RWA Tokenization Tech

Built Uniswap v2-style AMM with LP analytics, TWAP oracles, and impermanent loss calculations. Production-ready with fuzz testing.

SolidityHardhatNext.jswagmiBaseNestJS
Live DemoSource
SolidityDeFiwagmiAnalytics

Uniswap-Style AMM with Analytics

Built Uniswap v2-style AMM with LP analytics, TWAP oracles, and impermanent loss calculations. Production-ready with fuzz testing.

SolidityHardhatNext.jswagmiFoundryThe Graph
Live DemoSource
ERC-4626GovernanceVault

Governance-Driven Vault (mini-Yearn)

ERC-4626 vault with pluggable strategy contracts and token-weighted governance for strategy selection. Full yield optimization pipeline.

SolidityFoundryNext.jswagmiOpenZeppelinChainlink
Live DemoSource
Smart WalletDCARebalancing

DeFi Smart Wallet with Strategies

Automated DCA, portfolio rebalancing, and external protocol integration through a modular smart wallet architecture.

SolidityAccount AbstractionwagmiFoundryUniswap SDK
Live DemoSource
ERC-8004IdentityReputation

On-Chain Agent Identity & Reputation

Agent registration system with on-chain reputation scoring and slashing mechanisms for misbehaving agents.

SolidityFoundryThe GraphIPFSOpenZeppelin
Live DemoSource