Nadith Premaratne

Led the Singapore BE team in transforming Google Fiber's legacy architecture into a scalable, flexible microservices framework. Designed and developed clean, efficient, maintainable code to implement new features, enhancements, and bug fixes for customer-facing applications, backend systems, and network management tools. Conducted in-depth code reviews in Java and Kotlin, ensuring code quality and adherence to best practices. Collaborated closely with cross-functional teams and stakeholders to understand requirements and deliver high-quality software products. Provided mentorship and technical leadership to junior and new engineers, contributing effectively to the Google Fiber project. Participated in agile processes including sprint planning, daily stand-ups, and retrospectives.

Demonstrated strong understanding of the Visa Checkout architecture, ensuring efficient integration and alignment with overall system design. Played a key role in redesigning the legacy system architecture to accommodate a mobile-as-an-identity approach. Actively contributed to integrating new Identity Management APIs into the Visa Checkout platform, enhancing functionality and scalability. Developed reactive, asynchronous, and non-blocking REST APIs and integrated with other microservices and systems to ensure seamless communication. Conducted code reviews and enforced code quality controls, version control best practices, and adhered to strict security and performance standards. Managed CI/CD pipelines using Git, Ansible, and Jenkins to automate deployments and improve operational efficiency.

Key resource for the application architecture and development of the PromptPay - PayNow Linkage Project enabling instant bank transactions between Thailand and Singapore via mobile number. Involved hands-on in code reviews, code quality controls, version controls, and enforcing security and performance standards. Conducted technical studies and proof of concept on building low latency real-time payment systems. Developed, tested, and deployed the projects from scratch, with end-to-end understanding of the FAST System and PayNow transaction flow optimizations. Designed frameworks for distributed caching, query optimizations, saga distributed transactions, service discovery and registry, and finite state automation to handle operational status gracefully and automatically. Developed high availability clustering applications (active-active, active-passive) supporting consistency and partitioning concepts. Experienced in DevOps, CI/CD, Bitbucket, and DevOps tools including Ansible, Jenkins