Armando Ochoa — Full Stack Web3 Developer

I spent 7 years building banking software. Now I build DeFi.

Solidity and Smart Contracts with a security-first mindset: CEI patterns, reentrancy guards and fuzz testing on every contract. Frontend in Next.js, wagmi and viem.

  • Cofounder @ ALFA 3
  • Blockchain Accelerator '26
  • 7 yrs fintech

From fintech to DeFi

  1. 2019

    Banregio / Hey Banco

    Full Stack Web Developer · Aug 2019 — Present

    7 years shipping banking platforms used daily by thousands of customers.

    • Digital Onboarding — built the platform that lets customers open accounts and contract financial products 100% online, no branch visit. Angular + TypeScript frontend, Java/Spring Boot microservices, SQL, bank API integrations.
    • Business Banking — features companies run their money on: national transfers, payroll, bulk payments and dispersals, user and permission management.
  2. 2025

    TripleTen

    Data Analytics Certification

    Python, Pandas, NumPy, SQL, Tableau, Power BI, applied statistics.

    • Capstone projects: customer churn prediction, customer segmentation via clustering, video-game market analysis, interactive Tableau dashboards.
  3. 2026

    Blockchain Accelerator

    Web3 Engineering Program

    Deep-dive into the on-chain stack.

    • Solidity, smart contracts, Ethereum L1/L2, dApps, DeFi, oracles and smart-contract security.
  4. 2026

    ALFA 3

    Cofounder

    Software consultancy: modern web builds, deployments, data automation.

    • Built Dolovibes' full infrastructure: domain setup, Vercel frontend, Railway backend, and a Python/Pandas pipeline for marketing data.

Smart contracts, end to end

Four contracts built with Foundry — security-first, fuzz-tested, documented.

BestSwap

on-chain slippage

Uniswap V2 swap wrapper that computes slippage protection on-chain.

  • Solidity
  • Foundry
  • Next.js
  • wagmi

YieldGarden

per-second rewards

Stake ERC-20 SEED tokens, earn ETH rewards that accrue per second.

  • Solidity
  • Foundry

GoalFund

reentrancy-safe refunds

Trustless crowdfunding with reentrancy-safe automatic refunds.

  • Solidity
  • Foundry

ProofPass

soulbound ERC-721

Soulbound ERC-721 credentials with owner-controlled revoke and re-issue.

  • Solidity
  • Foundry

Stack

Blockchain

  • Solidity
  • Foundry
  • OpenZeppelin
  • Ethereum
  • wagmi
  • viem
  • RainbowKit

Web

  • Angular
  • TypeScript
  • JavaScript
  • Java
  • Spring Boot
  • React
  • Next.js
  • Astro
  • Node.js
  • HTML
  • CSS
  • SQL
  • REST APIs

Data

  • Python
  • Pandas
  • NumPy
  • Tableau
  • Power BI
  • PostgreSQL

Let's talk

Looking for a Web3 engineer with production fintech experience? I'm open to smart-contract and full-stack Web3 roles.