Summary
Overview
Work History
Education
Skills
Timeline
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Chin Chee Leong

Sungai Siput (U)

Summary

Accomplished Senior Software Engineer with 7+ years of experience specializing in PHP, Laravel, and backend system architecture. Proven expertise in .NET Core, Hyperf, and Vue.js, with a strong record of building scalable fintech, forex, gaming, and crypto platforms. Adept at API integrations, microservices, Docker-based deployments, and performance optimization. Experienced team lead with a track record of mentoring developers, managing projects, and delivering high-impact solutions. Currently serving as a Senior Software Engineer (Crypto & Fintech) with a China-based company, handling end-to-end system ownership from development to deployment and maintenance on Linux servers with Nginx and CI/CD pipelines.

Overview

8
8
years of professional experience

Work History

Senior Software Engineer (Crypto & Fintech)

Freelance
02.2025 - Current
  • Lead end-to-end development of Crypto Management Platform and Financial Investment System, from coding to deployment and long-term maintenance.
  • Built backend services with Laravel and Hyperf, ensuring scalability, security, and multilingual support.
  • Designed and deployed applications on Linux servers using BT Panel (Baota) for server management.
  • Configured and optimized Nginx for performance and security under high transaction loads.
  • Set up CI/CD pipelines on Linux to automate testing, deployment, and updates.
  • Integrated secure handling of deposits (BTC, ETH, USDT), QR-based wallet systems, referral rewards, staking, and redemption modules.
  • Worked directly with stakeholders across time zones to deliver high-quality fintech solutions.

Senior Software Engineer

ISJ Technology Sdn Bhd
06.2024 - 01.2025
  • Developed slot machine software, handling full data flow with .NET Core.
  • Implemented MQTT-based real-time communication between slot machines and backend servers.
  • Dockerized deployments on Linux, ensuring system reliability and scalability.
  • Managed the handpay cancel credit module and optimized transaction workflows.

Senior Web Developer / Team Lead

Visix Technology Sdn Bhd
07.2017 - 04.2024
  • Led a team of developers in building and maintaining large-scale Forex and Crypto trading systems.
  • Designed and implemented commission system architecture, initially taking over 2 days to process.
  • Re-architected into a microservice-based system using Laravel, with job queues and bus batch processing.
  • Reduced processing time from 2 days to just a few hours, improving efficiency by 5x.
  • Oversaw integration of real-time trading APIs and multiple payment gateways (Paytrust88, Help2Pay, Neteller, Skrill, XPay).
  • Built APIs for trading clients and mobile applications, ensuring seamless synchronization with backend systems.
  • Introduced workflow optimizations and implemented monitoring tools that significantly reduced downtime and errors.
  • Mentored junior developers and conducted code reviews, improving team code quality and consistency.
  • Successfully hosted and managed applications on bare metal servers, maintaining 99.9% uptime under high transaction volumes.
  • Collaborated directly with stakeholders to gather requirements, design solutions, and deliver within tight deadlines.

Education

Bachelor's Degree - Computer Science

Universiti Malaysia Sabah
06.2017

Skills

  • Backend: PHP (Laravel, Hyperf), NET Core, Nodejs
  • Frontend: Vuejs
  • Databases: MySQL
  • DevOps: Docker, Linux (Ubuntu, CentOS), Nginx, BT Panel (Baota), Cloudflare CDN, CI/CD Pipelines
  • Other: MQTT, RESTful APIs, Payment Gateway Integrations, WebSocket, Git, Jira, Scrum

Timeline

Senior Software Engineer (Crypto & Fintech)

Freelance
02.2025 - Current

Senior Software Engineer

ISJ Technology Sdn Bhd
06.2024 - 01.2025

Senior Web Developer / Team Lead

Visix Technology Sdn Bhd
07.2017 - 04.2024

Bachelor's Degree - Computer Science

Universiti Malaysia Sabah

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Chin Chee Leong