Kushani Hansika

Led the deployment and management of the Appointment Manager product and integrated communication adapters for WhatsApp and Viber to enhance customer engagement. Facilitated team sprint planning using Agile methodologies, designed and implemented scheduling solutions with Quartz, integrated SMS and email services, and managed payment gateway integration including data encryption for customer security. Managed AWS Aurora databases ensuring high availability and optimal performance, handled client onboarding successfully. Conducted R&D for workflow engine development using Camunda, Activiti BPM, and Drools Rule Engine, implemented workflow engine for leave management system, and mentored engineers on POCs. Managed and scaled microservice architecture for Campaign Management systems, integrated AWS and Google Cloud services, used AWS load balancing, managed EC2 instances with Prometheus monitoring, implemented Resilience4j for fault tolerance, developed database locking for data integrity

Backend Architecture: Designed and implemented scalable microservices using Java, Spring Boot, Kafka, and AWS, improving system throughput by 35% and ensuring 99.9% uptime. System Integration: Delivered multi-channel appointment management platform integrating WhatsApp, Viber, and SMS APIs, driving a 30% increase in customer engagement. Cloud Deployment: Deployed containerized applications on AWS EKS and EC2 with Jenkins-based CI/CD pipelines, enhancing release speed, resilience, and environment consistency. Process Automation: Built workflow automation systems using Camunda and Drools Rule Engine, reducing manual approvals by over 60%. Microservices Optimization: Introduced CQRS, database locking, and Resilience4j to boost scalability and reduce API failure rates by 40%. Security & Compliance: Enforced Keycloak, OAuth2, and data encryption to secure multi-tenant environments, ensuring compliance with enterprise-grade security standards. Leadership & Collaboration: Led sprint planning,

Implemented maintainable code and ensured reliability through unit testing and debugging. Optimized SQL queries to reduce database response time, contributed to technical documentation, and participated in code reviews. Developed and maintained a robust real-time chat system to enhance user engagement and support. Collaborated with cross-functional teams for testing and debugging, enhancing system reliability and minimizing downtime. Actively participated in issue resolution during live operations to maintain a stable production environment.