Smart Contract Security Testing & Vulnerability Analysis

Need help investigating vulnerabilities and unexpected behavior in your Solidity smart contracts?

I provide Solidity and EVM-focused security testing and vulnerability analysis using Foundry / Forge, with an emphasis on reproducible testing, DeFi protocols, and smart contract execution behavior.

What I can help with

Smart contract security testing

Solidity vulnerability investigation

Foundry / Forge security test development

DeFi protocol security analysis

Business logic and accounting-flow analysis

Transaction and execution-flow analysis

Fork-based vulnerability reproduction

Smart contract debugging and failure analysis

Edge-case and negative-path testing

Reproducing suspicious contract behavior

My approach

I focus on reproducing and understanding security-relevant behavior rather than simply running automated checks.

Depending on the project, I can analyze:

Solidity → EVM → DeFi → Contract interactions → Execution flows → Security invariants

I use controlled testing environments and, when appropriate, EVM mainnet forks to reproduce contract behavior against realistic protocol state.

The goal is to identify unexpected behavior, validate suspected issues, and provide clear, reproducible test cases that help developers understand and fix potential problems.

Relevant Experience

My portfolio includes hands-on GMX V2 testing on an Arbitrum mainnet fork using Foundry/Forge, covering DeFi contract interactions, order execution flows, accounting behavior, and reproducible integration tests.

I can review your contract, repository, or suspected issue and help define an appropriate security-testing scope before starting.

Send me your Solidity contract, GitHub repository, or security concern and let's investigate it together.

Terms of work
30
ETH, USDT, TIME
+53

More Gigs from Raymond fuster

You might also like

Show more