Hello, I'm
TAT TRAN
[ ABOUT ]
Results-driven developer with 5+ years of experience building production-grade e-commerce solutions.
I specialize in Shopify apps from concept to App Store listing, custom discount engines, checkout validation systems, and large-scale database optimization.
My philosophy: code must be correct, bypass-proof, and sustainable long-term. I always enforce business logic at the hardest layer.
[ SKILLS ]
Frontend
Backend
Database
E-Commerce
DevOps
Data Science
[ PROJECTS ]
Delivery Date Omega
Delivery date/time picker with blocked dates, lead-time & cutoff rules, and shipping-method-specific schedules for accurate checkout planning.
Pareto Limit Purchase
Set min/max quantity, cart amount, and product-level purchase limits to enforce ordering policies and prevent invalid checkout scenarios.
Custom Discount Engine
Full discount logic (quantity breaks, bundle, product config) for Shopline Functions built in Go.
Quantity Price Breaks
Create tiered discounts by quantity (e.g. buy more, save more) with product/variant-level rules and cart-ready pricing incentives.
Shopify Flow Integration
Built from zero: trigger system + UI configuration, synced app logic with Shopify automation workflow.
Large-Scale Database Migration
Migrated millions of records with transaction complexity, error handling, rollback, and performance optimization.
MySQL Performance Optimization
Diagnosed & fixed high lock waits, binary log storage, indexing strategy. Significant query time reduction.
WISE COMMERCE Platform
Order and returns management system with real-time messaging. Integrated Amazon SP, Shopify, Stripe, PayPal.
Campaign Management System
Marketing campaign API services with seller-creator communication and Stripe payment integration.
[ EXPERIENCE ]
Middle PHP/React Developer | Team Lead
- Owned end-to-end delivery of DingDoong Delivery Date and Pareto Limit Purchase, helping drive 2x growth and 1,000 users within the first 3 months.
- Delivered and maintained apps at Shopify "Built for Shopify" quality standards across UX, performance, and reliability.
- Led a 4-engineer team with technical reviews, sprint planning, and mentoring to improve delivery speed and code quality.
- Architected Docker-based CI/CD pipelines with automated release workflows for safer, faster deployments.
Fullstack Web Developer
- Built and scaled production e-commerce platforms for international clients, shipping features from requirements to live operations.
- Integrated Amazon Selling Partner, Shopify Partner, Stripe, PayPal, and UPS APIs to power stable order, logistics, and payment workflows.
- Established documentation and bug-tracking practices that improved team onboarding and reduced recurring regressions.
Education
Hanoi University of Industry
B.S. in Automatic and Control Engineering Technology
- Innovation Prize for ministerial-level scientific research
- 2nd Prize in university-level robotics competition
[ CONTACT ]
Have a project in mind? Let's build something great together.