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Open to selected freelance projects · Rio de Janeiro, BR

I build Shopify apps, themes and the systems around them.

Senior software engineer, taking on selected freelance work. Custom apps, Shopify Functions, Liquid themes, international stores and AI‑assisted operations.

Role
Software Engineer
Focus
Shopify apps & themes
Lang
EN · PT‑BR
vini — zshinteractive
vini@buenno:~$
  • Shopify Functions
  • Remix / React Router
  • Liquid
  • Hydrogen
  • Node.js
  • GraphQL
  • TypeScript
  • MCP
What the work changes

Code that shows up where the business feels it.

Every project ends in one of four places: more sales flowing, a faster store, an app doing work nobody wants to do by hand, or a theme the team can actually run.

01 · Sales

Sales keep moving

Cart, checkout logic and discounts built to carry more orders without breaking.

02 · Performance

Stores that load fast

Lean themes, lazy‑loaded media and less JavaScript between the customer and the cart.

03 · Apps

Apps that do the work

Custom and embedded apps, Functions for discounts and checkout, and the integrations behind them.

04 · Themes

Themes built from blocks

Liquid themes from scratch, block‑first, so the team can rearrange pages without a developer.

Services

Engineering for Shopify, from storefront to back office.

01

Shopify apps

Custom and embedded apps on the Admin and Storefront APIs, with Functions for discounts and checkout logic.

RemixReact RouterFunctions
02

Liquid themes

Themes from scratch, block‑first on the Horizon architecture, accessible from day one.

LiquidTypeScript
03

Integrations & APIs

Third‑party apps, internal systems and custom APIs, for headed and headless stores.

GraphQLHydrogen
04

International stores

Shopify Markets, multi‑currency and multi‑language, B2B catalogs and the automations around them.

MarketsFlowB2B
05

AI & ops automation

MCP servers, agent workflows and internal tools that take repetitive work off the team.

MCPAgents
Internal tools

Internal tools I've built.

Systems I built for the team I work with. Details stay private.

processtypestatus
mcp-server
Model Context Protocol
infrarunning
ticket-autopilot
autonomous resolution flow
AI agentsrunning
discount-engine
led development
Functionsrunning
extensions-monorepo
agentic work & traceability
reporunning
FAQ

Before we talk.

What kind of projects do you take on?
Shopify apps and themes, internal and operations automations (including n8n), and full-stack systems and projects.
How does the first contact work?
Book a call on my calendar or message me on LinkedIn. We start with a discovery conversation to understand the project, timeline and expectations, and then we talk about how to kick it off.
What are your availability and typical timeline?
It depends a lot on the project. After our first conversation I propose a delivery schedule.
Do you work with existing stores or only new ones?
Both.
What support do you offer after delivery?
To be agreed per project. It includes a warranty: I fix any bug in the project, plus unexpected behavior and malfunctions. New features and software evolution are not part of the warranty; they are a separate service, agreed on its own.
Which languages do you work in?
English and Portuguese.
online

Need a Shopify engineer?

Tell me what you're building and what's in place today.

Message me on LinkedIn ↗Book a call ↗