Brendan Rosa

Full Stack Engineer

Florida, United States · Remote

Summary

Self-taught full stack engineer with 5+ years of professional experience building TypeScript services for high-volume Shopify e-commerce. At Animal Farm Family, the company behind Gorilla Mind, Happy Hippo, and INTELLIGENT, I build and maintain the storefronts, payments, shipping, and integrations the brands run on. My workflow is agent-driven, and I help build the tooling and guardrails behind the team’s AI-assisted development. I place a strong emphasis on correctness, shipping changes safely and proving they work before they go live.

Skills

Languages: TypeScript, JavaScript, HTML, CSS, Liquid
Frontend: React, React Native, Shopify themes & checkout extensibility, Vite, webpack
Backend: Node.js, Express, Hono, GraphQL, MongoDB, Postgres, event-driven architecture (SQS), Zod
Infra & DevOps: AWS, Terraform, Docker, GitHub Actions, Cloudflare Workers, Sentry, Vitest
Integrations: Shopify, Twilio, Walmart Marketplace, TikTok Shop, NetSuite, ShipStation, Klaviyo, GTM
AI Tooling: Claude Code skills & plugins, MCP, AI guardrails & CI automation

Experience

Full Stack Engineer · Animal Farm Family

Apr 2022 – Present

Co-built the custom payments system that carries roughly a third of Happy Hippo's revenue.
Single-handedly modernized the shipping-rates service behind every brand's checkout, and also eliminated ~$84K/yr in API costs by migrating its rates provider.
Build features and run releases for the shared Shopify theme powering the storefronts.
Built marketplace and ERP integrations across Walmart, TikTok Shop, and NetSuite.
Help drive the team's internal AI developer tooling and guardrails.

TypeScript
Node.js
Shopify
GraphQL
AWS
Terraform
Cloudflare Workers
MongoDB

Co-founder · Viking Software

2018 – 2025

Built the Free Kratom System, a verified-lead sample funnel for Happy Hippo that drove $1M+ in new-customer sales and led to Animal Farm hiring both founders.
Co-developed Madden Tools, a SaaS toolkit for Madden NFL players.

TypeScript
Express
Twilio
MongoDB
React

Software Engineer I · CACI International

Feb 2021 – Apr 2022

Built the UI foundations of WebCV, an Air Force Research Laboratory web port of a large-dataset visualization tool, UCV.
Developed a UI theme kit used on supporting projects, and a REST API for managing UCV projects.

JavaScript
HTML
CSS

Independent Contractor · VOV Auto

Aug 2017 – Jun 2019

Built a backend service to sync data between Frazer DMS and the dealership website's inventory page.

Node.js
PHP
MySQL

Projects

Madden Tools

2021 – 2025

Niche SaaS toolkit for Madden NFL players, co-developed under Viking Software: created the original webapp and re-architected the product twice, into a React Native mobile app and back into a React webapp.
The product now serves ~152K monthly unique visitors and 3.18M monthly requests, with 3,600+ registered users.

TypeScript
Next.js
Tailwind CSS
React Native
PostgreSQL
Express
Stripe
Clerk

Viking DropShipper

2018 – 2019

Fully automated e-commerce arbitrage system: indexed supplier products, auto-listed them on eBay, repriced dynamically on supply and demand, placed headless orders on sale, and attached tracking automatically.
Built the CRUD UI and metrics dashboard, and handled the customer-facing side of the business.

JavaScript
PHP
Java
MySQL
eBay SDK

Project Orion

2017

Distributed automation system: built the CRUD UI that interfaced with the Java cluster controllers orchestrating worker instances, with per-instance task configuration and a heat-map visualization of the active fleet.

JavaScript
PHP
Java
MySQL