Achievements: - Automated 95% of Shopee order creation by integrating Push API with Go, RabbitMQ and PostgreSQL, reducing missing packages up to 95%, remaining cases caused by third-party data mismatches. - Redesigned Pre-Order system, eliminating virtual warehouse reliance and manual re-fulfillment, streamlining operations across warehouse, CS, and finance teams. - Integrated Grab Express using webhooks, enabling real-time delivery status and self-service booking management, outperforming GoSend’s polling-based model and reducing operational load. - Reengineered voucher and discount logic to handle 3M+ BINs and 50K+ products without performance issues, resolving prior crashes and enabling large-scale campaigns. Responsibilities: - Designed and developed backend services and internal tools using Go, PostgreSQL, and RabbitMQ. - Led system design and architecture planning, translating business needs into scalable and maintainable solutions. - Maintained and enhanced frontend modules using React (Next.js), delivering UI improvements, feature updates, and bug fixes to support evolving business workflows. - Improved performance and maintainability of legacy systems built with PHP 7.3 and MySQL 8.0, addressing technical debt and bottlenecks. - Enhanced legacy system backend responsiveness by optimizing slow queries and applying effective indexing strategies. - Introduced modern development practices and tools to improve engineering efficiency and code quality. - Mentored junior and mid-level engineers, led code reviews, and contributed to team knowledge sharing. - Worked closely with Product Managers to identify business pain points, prioritize engineering tasks, and propose practical, outcome-driven solutions. - Actively participated in Agile ceremonies (sprint planning, retrospectives, and daily stand-ups), contributing to smooth team operations and consistent delivery. - Create technical documentation in Confluence

Achievements: - Improved background job execution by 50% using Hangfire optimization, preventing the need for costly vertical scaling during peak hours in the NZ business window. - Led delivery of a full React-based application despite the team’s limited prior experience, accelerating the team’s frontend capabilities and ensuring timely project completion. Responsibilities: - Delivered full-stack solutions using .NET for APIs and React with TypeScript for the frontend, ensuring responsive UIs and scalable backend services. - Acted as Team Lead and Business Analyst, gathering requirements from clients, translating them into technical specs, and overseeing implementation. - Mentored junior developers, conducted code reviews, and enforced clean code and architectural standards. - Collaborated daily with clients from Australia and New Zealand, and led async communication with a remote dev team in Albania. - Participated actively in Agile ceremonies, contributing to sprint planning, retrospectives, and backlog grooming. - Used Azure DevOps (Boards, Repos, Pipelines) for project tracking, CI/CD, and collaborative development workflows.

- Developed and maintained web applications based on business and technical requirements. - Participated in the full SDLC, from planning and development to deployment and support. - Deployed applications to live servers and provided post-release support. - Supported the Technical Team Lead in translating business requirements into technical tasks. - Collaborated daily with international teams based in Malaysia. - Participated in sprint planning during early adoption of Agile methodology.

- Successfully optimized website performance by enhancing its performance index from E to B. - Implemented strategic enhancements and optimizations that significantly reduced the Time To First Byte (TTFB) to below 0.8s. - Implemented master-slave database replication to improve scalability and availability. - Led backlog grooming, technical planning, and developer coordination. - Communicated with stakeholders to align technical execution with business goals. - Worked closely with Malaysian-based teams in technical and product domains.

- Designed and developed custom websites, web applications, and ERP modules tailored to meet specific client requirements. - Managed the entire development lifecycle, including requirements gathering, design, implementation, testing, and deployment, ensuring projects were completed on time.

- Developed and maintained the Information System for Post Graduate Student Payment. - Developed and maintained the Information System for Ujian Saringan Masuk (USM) for new intake.