Vicente Aguilar

Blockchain Engineer & Security Consultant, specializing in smart contract development and security audits. Transforming complex business logic into robust, secure on-chain solutions.

About me

The Architect of Trust in Web3

I’m Vicente Aguilar, a blockchain engineer operating at the crucial intersection where business strategy meets code immutability. In an ecosystem where trust is the most valuable asset, my mission is to build and secure digital infrastructure that doesn’t just function—it endures.

The Problem With Most Smart Contracts

Every day, millions flow through contracts built by teams who treat security as a checklist item. The result? $14B+ lost to exploits since 2016. You don’t need another developer. You need a security-first architect who builds contracts that don’t break.

I’m Vicente Aguilar. I design and audit decentralized systems where immutability isn’t a feature it’s a requirement.


What I Do

Smart Contract Development End-to-end protocol architecture and Solidity implementation. From business logic to mainnet deployment, I build contracts optimized for security, gas efficiency, and long-term maintainability.

Smart Contract Audits Line-by-line code analysis to identify vulnerabilities before they become headlines. I hunt complex attack vectors—reentrancy, business logic exploits, oracle manipulation—and deliver actionable insights backed by proof-of-concept recommendations.

Technical Strategy & Consulting High-level sessions for teams navigating architecture decisions, technical feasibility, or second opinions on critical engineering choices. Think of me as your external CTO for blockchain challenges.


My Approach: Three Non-Negotiable Principles

Security as Foundation, Not Afterthought Security isn’t bolted on during audits. It’s woven into every architectural decision, code pattern, and threat model from day one. I think like an adversary so you don’t have to worry.

Business Logic First, Technology Second Blockchain is a tool. Before touching Solidity, I obsess over your actual business needs—value flows, edge cases, user incentives. The best contracts are built on this clarity.

Code as Craft Clean, modular, documented code isn’t luxury—it’s foundation. It reduces attack surface, cuts gas costs, and makes future audits trivial. I build to last.


Core Expertise

Smart Contracts

  • Advanced Solidity & Foundry
  • ERC standards mastery (ERC-20, ERC-721, ERC-1155)
  • Proxy patterns (UUPS, Transparent Proxy)
  • Gas optimization at scale

Security

  • Manual code review + static/dynamic analysis
  • Deep knowledge of common & sophisticated attack vectors
  • Invariant testing, fuzzing, formal verification
  • Automated security pipeline integration

Architecture

  • Modular, upgradeable contract systems
  • Oracle integration (Chainlink, custom solutions)
  • Layer 2 & sidechain deployment strategies
  • Off-chain infrastructure integration

Let’s Build Something Unbreakable

Whether you’re launching a protocol, hardening existing contracts, or solving a complex technical challenge I’m ready.

Discuss your project and see how I can help secure your smart contract infrastructure.

Experience Work

Work Experience

  1. Full-Stack Web3 Developer

    My Web3 Startup

    Building and shipping features for NFT marketplace apps (listing, minting, secondary flows) with React/Next.js and TypeScript.

    Developing trading infrastructure: real-time order books, execution pipelines, and price aggregation with WebSockets and resilient backend services in Node.js/Express.

    Enhancing platform security via input validation, rate limiting, authentication, anomaly detection, and automated testing integrated into CI/CD.

    Collaborating with product, design, and ops to deliver scalable, low-latency systems for crypto trading.

    Tech Stack: TypeScript, React/Next.js, Node.js/Express, WebSockets, Redis, Solidity, PostgreSQL, ethers.js/viem/wagmi, Docker, GitHub Actions

  2. Blockchain Developer

    Privalyx

    Architect and implement privacy-preserving smart contracts in Solidity, leveraging AI developers for confidential data access.

    Auditing and creating a wall of safe measures in building smart contracts, using invariant testing, fuzz tools, different types of strategies to maintain safety in each step.

    Integrate on-chain identity and permissioning modules with Node.js/TypeScript back-ends, enforcing strict RBAC and auditability.

    Collaborate with front-end teams on React/Next.js dApps that interact seamlessly with Privalyx contracts and AI services.

    Maintain robust CI/CD pipelines (GitHub Actions, Docker) with automated security checks (Slither, Echidna) and end-to-end testing.

  3. Full-Stack Developer

    Hispamicro Sistemas Informaticos S.L.U

    Design and development of microservices in TypeScript (Node.js/Express) for critical functionalities (authentication, notifications, resource management), ensuring high cohesion and performance in the platform.

    Implementation of modular REST APIs with RBAC access control in TypeScript/Express, consumed by multiple clients and collaborating closely with the frontend team.

    Backend services architecture in Laravel 11 + MySQL for specific use cases, integrated with Node.js microservices, ensuring scalability and maintainability.

    Configuration of CI/CD pipelines for both stacks (TypeScript and PHP) with GitHub Actions and Docker, orchestrating automated testing and continuous deployments in staging and production.

    Development and adaptation of WordPress + WooCommerce themes, optimizing Core Web Vitals and improving UX to increase conversion rate by 12%.

    Tech Stack: React, WordPress, PHP, TypeScript, Node.js, Laravel, MySQL, Docker, GitHub Actions

  4. Front-End Developer

    Wixting

    Built SPAs and SSR/SSG pages with React 18 and Next.js 14, using TypeScript, Tailwind CSS, React Query and Zustand to manage data and state, optimizing Core Web Vitals (LCP < 1s, CLS < 0.1).

    Implemented API routes and serverless functions in Next.js with TypeScript, consuming a Headless CMS via GraphQL for dynamic content.

    Developed interactive React dashboards that integrate inventory and billing APIs, mounting lightweight back-ends in Node.js/Express with TypeScript.

    Delivered 10+ SEO-optimized WordPress sites with custom themes and PageSpeed ≥ 95, and 4 WooCommerce stores with custom checkout flows (Stripe/PayPal).

    Automated unit testing (Jest) and E2E (Playwright), performance audits (Lighthouse) and deployments on Vercel through CI/CD with GitHub Actions and Docker.

    Tech Stack: React, Next.js, TypeScript, Tailwind CSS, WordPress, WooCommerce, Node.js, Express, Jest, Playwright, Docker, GitHub Actions

Stack Technological

Ready to build secure Web3 solutions? Let's create something exceptional.