Zin Kyaw Kyaw (AJ)

Summary

Senior Software Engineer with 8+ years of hands-on experience turning complex requirements into high-performance applications using Node.js, Golang, and PHP. From reducing API latency by 98% at Omise to leading a 5-person engineering team at SEAD, I bring a builder's mindset to every project. Active open-source author with 10+ repositories and contributions to projects like PDFMe (4.1k+ stars).

Experience

Lead Software Engineer Nov 2023 - Present

Southeast Asia Development, Hong Kong

• Engineered a production-grade PDF printing application compliant with PDF/X-4 standards using pdf-lib, processing 10,000+ documents monthly.
• Led a team of 3 developers, delivering end-to-end software projects on schedule using agile methodologies.
• Partnered with SBE, delivering end-to-end software solutions as SEAD's development partner.
• Mentored 3 junior developers through 100+ code reviews and pair programming sessions, accelerating team growth.

Node.js TypeScript React pdf-lib AWS Docker

Software Engineer Jul 2022 - Oct 2023

Omise, Bangkok, Thailand

• Owned and maintained 6+ payment platform SDKs and plugins across WooCommerce, Shopify, Magento, PHP, Node.js, and Go.
• Architected caching and query optimizations that reduced API latency by 98% (from 500ms–1s down to 2–10ms).
• Shipped responsive, merchant-facing interfaces that improved developer onboarding, reducing integration time by 40%.

Go PHP Node.js WooCommerce Shopify Magento Redis

Senior Backend Developer Nov 2021 - Jun 2022

Develop Now / Hungry Now, Bangkok, Thailand

• Built and scaled the backend for a food delivery platform serving 1,000+ daily orders using Laravel, MySQL, Node.js, and Socket.IO.
• Designed 20+ RESTful APIs consumed by web and mobile clients, enabling seamless order and delivery workflows.
• Architected a real-time driver location tracking system with Socket.IO, supporting 500+ concurrent connections.

Laravel Node.js Socket.IO MySQL REST API

Senior Full Stack Developer Dec 2020 - Sep 2021

BuzzTags, Bangkok, Thailand

• Managed a real estate application platform, creating white-label websites for partner companies.
• Led a team of 3 developers, overseeing end-to-end project delivery.

PHP React Vue.js TypeScript MySQL AWS

Mid PHP Developer Aug 2019 - Nov 2020

Befeni GmbH, Bangkok, Thailand

• Developed a full-stack production management system with Laravel, Vue.js, and MySQL, tracking 5,000+ garment orders.
• Integrated 3 mail and payment service modules, reducing order-to-delivery processing time by 30%.
• Built a Cordova-based mobile app for barcode scanning, used by 50+ factory staff for real-time order tracking.

Laravel Vue.js MySQL Cordova REST API

Junior PHP Developer Mar 2018 - Aug 2019

TR Cloud, Bangkok, Thailand

• Contributed to a cloud-based accounting system serving 200+ business clients, implementing 30+ features using PHP, JavaScript, and MySQL.
• Resolved 100+ bugs and delivered features consistently under tight deadlines in a fast-paced, agile team environment.

PHP JavaScript MySQL

Skills

Education

Open-Source Contributions

Languages