Shopify App Engineer at Pareto

Checkout, discounts,and delivery apps.

I’m Tat, a Shopify app engineer in Hanoi. At XIPAT’s Pareto team I work on checkout rules, discounts, and delivery scheduling, from the first merchant setting to the production release.

View work Let’s talk

Open to select project work

Tat Tran smiling in a white shirt against a soft blue-gray background — Shopify App Engineer · Hanoi

Work

Shopify apps in production.

Live apps I contribute to at Pareto and DingDoong. Checkout rules, volume pricing, and delivery scheduling used by real stores.

Shopify app · Checkout validation

Pareto — Order Limits

Contributor, Pareto · 2024–present

Quantity, cart-value, and B2B order limits enforced at checkout with Shopify Functions.

Built for Shopify4.9 · 134 reviews

Shopify FunctionsReactLaravelMySQL

The challenge

Merchants need minimum and maximum order rules, company-level B2B caps, and anti-scalper limits without blocking valid purchases.

My contribution

I built the validation core and merchant configuration flows using Shopify Functions, React, and Laravel.

The result

Order rules run at checkout in a production app with Built for Shopify recognition.

View on the App Store

Pareto Quantity Breaks merchant admin: targeting, discount tiers, and a storefront preview

Shopify app · Discount logic

P: Quantity Breaks & BOGO

Contributor, Pareto · 2024–present

Tiered discounts, volume pricing, and merchant controls, including Shopify POS.

Built for Shopify4.9 · 265 reviews

Shopify FunctionsLaravelReactPOS Extensions

The challenge

Volume pricing has to stay consistent across products, variants, and sales channels, and stay clear to merchants.

My contribution

I built discount rules on Shopify Functions, merchant configuration flows, and support for POS extensions.

The result

A production discount app with Built for Shopify recognition and configurable volume-pricing workflows.

View on the App Store

DingDoong delivery date picker: delivery zones on a map and a cart with local delivery selected

Shopify app · Delivery scheduling

D: Local Delivery Date Picker

Contributor, XIPAT · DingDoong product

Delivery and pickup dates with lead times, cutoffs, zones, and merchant controls.

Built for Shopify4.9 · 294 reviews

ReactLaravelShopify APIMySQL

The challenge

Delivery dates depend on preparation time, blackout dates, location, and the shipping method.

My contribution

I built merchant configuration, Shopify API integrations, and checkout-facing scheduling logic.

The result

Scheduling in a production DingDoong app with Built for Shopify recognition.

View on the App Store

Also part of the work

Pareto MCP Server

Go/GoFR MCP server with typed tools for inspecting discount and order-limit rules, validating merchant configuration, and scoped Admin API queries. Used with Claude Desktop, Claude Code, and internal agents.

Go / GoFR / MCP / Shopify Admin API

Shopify Flow Integration

Merchant configuration and triggers connected to native Shopify workflows.

React / Laravel / Shopify Flow

Database Migration & Performance

Large data migrations, rollback paths, indexing, and resolving MySQL lock waits.

Laravel / MySQL

Shopify POS UI Extension

Order-limit rules surfaced inside the Shopify POS cart experience.

Shopify POS / Cart API

WISE COMMERCE Platform

Order and returns management with commerce, payment, and messaging integrations.

Laravel / React / Firebase

About

Hi, I’m Tat. ✳

I’m a Shopify app engineer on XIPAT’s Pareto team. I like turning messy business rules into software merchants can actually configure.

Day to day that means the interface, the backend, and the database. I care about the small details that make a product easier to use, and the engineering that keeps it dependable after release. Alongside this role I take on select Shopify project work.

Building commerce software since2021

Currently based inHanoi, Vietnam

LinkedIn GitHub

The journey so far

2024 — Present

Shopify App Engineer

XIPAT Flexible Solutions · Pareto

Checkout and discount apps, MCP integrations, code review, and production releases.

2021 — 2023

Fullstack Web Developer

WISE COMMERCE

Commerce platforms and integrations with Amazon, Shopify, payments, and logistics APIs.

Education

Control & Automation Engineering

Hanoi University of Industry

An engineering foundation in systems, problem-solving, and robotics.

How I can help

From business rules to working software.

Shopify apps & checkout

Embedded apps, checkout validation, discounts, and POS extensions. From merchant configuration to the rules underneath.

Shopify FunctionsReactLaravel

Commerce backends & data

API integrations, data models, query tuning, and migrations with clear recovery paths. Built around the way the business operates.

LaravelMySQLAPIs

AI tools & integrations

MCP servers and typed tools that connect AI assistants to commerce workflows with scoped access.

Go / GoFRMCPAgent workflows

Tools I work with

Chosen for the problem, grounded in hands-on experience.

Everyday

Shopify · Laravel · React · TypeScript · MySQL

Backend & delivery

Go / GoFR · MCP · Docker · GitLab CI · Jenkins

AI workflow

Claude Code · Agent orchestration

Contact

Have a Shopify problem? Let’s talk.

I work on checkout, discounts, and delivery apps at Pareto. If you have a project in that range, send the problem and a timeline. I usually reply within two days.

tattran.dev@gmail.com

LinkedIn GitHub WhatsApp

A few details to get started

Your message is stored so I can reply. I don’t share it.