Hello, World.

I'm Alex Kua.

Technical Lead Software Engineer Web Developer Entrepreneur

More About Me
About

Let me introduce myself.

Alex Kua

Senior Full-Stack Software Engineer and Tech Lead with 10+ years of experience building complete web applications — from backend architecture and database design to frontend implementation. Specialized in payments engineering, distributed systems, and technical leadership across fintech and high-volume transactional platforms. Comfortable owning features end-to-end and leading engineering teams in fast-moving startup environments.

Profile

  • Name: Alex Kua
  • Birth Date: April 24, 1991
  • Job: Technical Lead, Software Engineer
  • Website: www.alexkua.com
  • Email: [email protected]

Skills

  • Back-end: Go, PHP (Laravel, CakePHP), Node.js, Hono
  • Front-end: Vue.js (Nuxt 2/3), React, React Native, TypeScript
  • Payments: Stripe, PaymentIQ, crypto integrations, cashier systems
  • Databases: PostgreSQL, MySQL, Redis, MongoDB
  • Infrastructure: Docker, Kubernetes, Nginx, AWS, DigitalOcean, Cloudflare Workers
  • Leadership: Technical Lead, Agile/Scrum, code review, stakeholder management
Resume

More of my credentials.

Work Experience

Rivalry

September 2022 – February 2026

Senior Software Engineer → Technical Lead

Online sportsbook and casino platform. Worked across multiple product teams — sportsbook, casino, marketing, user retention, and responsible gambling — before moving to the payments & cashier team for the final year, progressing to Technical Lead.

As Technical Lead: served as the main technical point of contact for all payments engineering, led architecture for systems handling thousands of daily transactions, managed team backlog in collaboration with stakeholders, and conducted code reviews across the team.

As Senior Software Engineer, Payments: architected a PaymentIQ integration routing transactions across multiple providers through a unified cashier layer, built direct payment provider integrations, developed custom payment routing rules, implemented fraud prevention systems, built admin tooling and dashboards, and led the frontend implementation of the cashier in Vue.js (Nuxt).

Stack: PHP (Laravel), Node.js, Hono, Vue.js (Nuxt 2/3), MySQL, PostgreSQL, Redis, Cloudflare Workers

SnapX (start-up)

June 2018 – November 2021

Co-Founder & Software Development Team Lead

Co-founded an automated bookkeeping SaaS platform leveraging AI-powered receipt classification and data extraction. Led technical development from concept to production, making all critical architectural decisions. Built and managed a cross-functional team of developers and QA specialists using Agile methodologies. Integrated multiple accounting software APIs (QuickBooks, Xero, Sage, Acomba) for seamless data synchronization.

Stack: PHP Laravel, React, React Native, jQuery, MySQL

Sécurité XGuard (start-up)

January 2020 – July 2021

Chief Technology Officer

Led all technical strategy and development for a technology-enhanced security services company. Architected and implemented internal operations management systems. Established development workflows, quality standards, and coordinated between technical and business teams.

Stack: PHP Laravel, React, React Native, MySQL

FlightHub (Momentum Travel Group)

March 2018 – June 2019

Lead Web Developer

Progressed to lead position, managing tasks and coaching team developers. Led development of the company's online contact center platform integrating multiple third-party services. Built scalable solutions for high-traffic travel booking systems. Conducted code reviews and mentored junior developers.

Stack: PHP Laravel, React, MySQL

Freelance Web Developer

January 2013 – Present

Self-Employed

Full-stack web application development for startups, small businesses, and established companies. Backend APIs, payment integrations, database design, and React Native mobile applications. Technical consulting on architecture, stack selection, and code quality.

Personal Projects

PayFlow

2026 — Live Demo  |  GitHub

Distributed Payment Processing Platform

Built from scratch in 2 weeks as a capstone project with no prior Go experience. Leveraged AI-assisted development tools to explore modern technologies and accelerate learning, while maintaining full ownership of all architectural decisions. A production-grade distributed payment system deployed on DigitalOcean demonstrating:

Distributed saga pattern, idempotency at every layer, optimistic locking, circuit breaker, backpressure queue middleware, real-time SSE via Redis Pub/Sub, webhook deduplication, daily Stripe reconciliation, and distributed tracing with OpenTelemetry.

Stack: Go 1.26, PostgreSQL, Redis, Stripe, React 19, Docker, Nginx, DigitalOcean

Education

École de technologie supérieure

2012 – 2015

Bachelor's degree, Software Engineering

 

Collège Montmorency

2008 – 2011

Diploma of College Studies, Information Technology

Services

What Can I Do For You?

Contact

I'd Love To Hear From You.

Whether you have a project in mind, want to discuss opportunities, or just want to connect—feel free to reach out via email or LinkedIn!

Where to find me

Laval, QC

Message me on

LinkedIn

Email Me At

[email protected]