Web3 auditing & smart-contract security

Hi, I’m Mariano Salazar

Smart Contract Security Engineer & Solidity Lead

I design, audit, and harden DeFi, NFT, and RWA protocols. My workflow mixes manual reviews, invariant tests, and on-chain experience to ship resilient products with teams across LATAM and Europe.

Book a review See deployments

Remote (Queretaro, Mexico)

About me

I’m a blockchain engineer with dual citizenship (Costa Rica / Mexico) and 5+ years building and auditing smart contracts. I have led development for Disruptive Studio, Ignichat, and open communities, while participating in reviews for Cantina, Code4rena, and Cyfrin Codehawks.

Technical auditing

Manual reviews plus Foundry, Echidna, and Slither fuzzing to uncover overflows, privilege abuse, and MEV vectors.

DeFi / RWA architecture

I design stablecoin controllers, NFT markets, and multi-chain vaults with separated governance and on-chain guardians.

Continuous learning

Ethereum bootcamp, Cyfrin Updraft, Blockchain Sec Academy, and a Master’s in Blockchain keep my practice sharp.

Community

Spanish-speaking mentor via ThaddeusCrypto and workshops that help teams mature their security posture.

Skills

Tools and practices I rely on to ship secure, production-grade Web3 products.

Audits & testing

Manual code reviewInvariant testing (Foundry/Echidna)Property-based fuzzingStatic analysis (Slither, MythX)Threat modeling

Contract stacks

Solidity & YulERC-20/721/1155Chainlink / AaveHardhat & FoundryTenderly / Viem

Infrastructure

PolygonEthereumLayer 2sIPFS/NFT.StorageBitcoin Taproot

Human skills

Technical writingThaddeusCrypto workshopsWeb3 mentorshipIntermediate EnglishNative Spanish

Deploys & Audits

A curated list of public repos and deployed contracts that showcase my focus on security, governance, and real Web3 products.

Open-source references

Public PoCs, audits, and tooling I maintain for the community.

My StableCoin Project

Over-collateralized stablecoin using Chainlink oracles and panic-liquidation protections.

SolidityChainlinkFoundry

My Blockchain Project

Blockchain developed in Go.

Go LangJavascriptHTML

NFTContracts with Foundry

Optimized ERC-721 contracts with roles, reveal flows, and reusable launch tooling.

NFTERC-721Foundry

Updraft Security Reports

Curated public findings, methodologies, and checklists for Web3 teams.

AuditDocs

Arbitrage with AAVE Flashloan

Atomic arbitrage strategy on Aave v3 with slippage guards and tenderly-backed simulations.

AaveMEVPolygon

Let’s talk

Need to reinforce your protocol’s security or want me embedded through launch? Book a review and we’ll plan the path to mainnet together.

Email

mtsa95@gmail.com

Location

Remote (Queretaro, Mexico)

GitHub

github.com/Thaddeus19

linkedin.com/in/mariano-salazar-alvarez

YouTube

@thaddeuscrypto

Ready to get started?

Let’s review your contracts, deployment processes, and monitoring needs so you can ship with confidence.

Email me now