WaiKit Woon

Senior Full-Stack Engineer with 10+ years of experience building scalable backend systems and SaaS platforms across PHP (Laravel), Node.js, and ASP.NET Core ecosystems. Skilled in designing RESTful APIs, distributed systems, cloud infrastructure on AWS, CI/CD pipelines, Docker, MySQL, PostgreSQL, and Redis. Experienced in multi-tenant SaaS architecture, hospitality technology, and third-party integrations, with a focus on building reliable, maintainable, and scalable software.

Senior Software Engineer - Atoz Software Tech Sdn Bhd

(2024-06 - 2026-04)

• Architected and developed distributed microservices for a high-concurrency, multi-tenant SaaS platform using Laravel, AWS, Docker, and Redis, serving enterprise clients across Southeast Asia
• Designed and implemented asynchronous job pipelines, queue workers, and event-driven workflows using Laravel Queues and Redis, enabling reliable real-time data processing and cross-system communication
• Optimized MySQL query performance, indexing strategies, and Redis caching, reducing average API response latency by approximately 40% under peak traffic
• Designed and developed RESTful APIs to support web applications, mobile applications, and third-party integrations
• Developed enterprise administration portals using Laravel, Inertia.js, and Vue.js, featuring role-based access control (RBAC), audit logging, reporting dashboards, and real-time operational monitoring
• Collaborated with product managers and stakeholders to define technical roadmaps, estimate engineering effort, prioritize features, and deliver three enterprise SaaS products on schedule
• Implemented automated CI/CD pipelines using GitHub Actions and Docker, improving deployment reliability and accelerating release cycles
• Participated in architecture reviews, established engineering best practices, and contributed to technical documentation, code quality, and development standards across multiple engineering teams

Senior Programmer - Rockbell Software Sdn Bhd

(2022-09 - 2024-03)

• Led full-stack development of a multi-industry POS system for F&B clients, covering cashier, waiter ordering, eMenu, online booking, kitchen workflows, payments, inventory, and reporting modules
• Designed and developed a centralized membership and loyalty system with tier-based rewards, points accumulation, and cross-outlet redemption capabilities
• Integrated multiple payment gateways including S-Pay Global, iPay88, and Gkash, supporting e-wallet, FPX, and card transactions
• Developed an internal CRM system to manage customer sales records, support tickets, and service history, improving visibility of client interactions across sales and support teams
• Mentored 3 junior developers through code reviews and established RESTful API standards and Git workflow practices
• Implemented CI/CD pipelines using GitHub Actions with automated testing, improving deployment efficiency by 80%

Senior Application Developer - ABS Software International Sdn Bhd

(2015-08 - 2022-08)

• Spearheaded end-to-end development of a cloud-based Property Management System (PMS) for regional hotel chains, deployed on AWS and serving 50+ properties across Southeast Asia
• Designed and built a Booking Engine and Channel Manager integrating major OTAs including Booking.com, Agoda, SiteMinder, and STAAH, supporting real-time inventory synchronization and rate management
• Developed a multi-platform hospitality ecosystem including hotel websites, online booking engines, and mobile applications for guests, housekeeping, and hotel operations management
• Architected a multi-tenant SaaS system with role-based access control, data isolation, and centralized configuration management across multiple hotel properties
• Implemented real-time room inventory synchronization engine with conflict resolution mechanisms, supporting high-volume concurrent booking transactions across multiple channels
• Led full software development lifecycle including requirement analysis, system design, development, QA coordination, deployment, and post-production support

Diploma - IT - Olympia College (2013 - 2015)