Lasindu Nuwanga Weerasinghe

Developed and maintained .NET APIs, libraries, batch jobs, and a large-scale CRM system in a private AWS cloud. Migrated a sizeable JavaScript codebase to TypeScript to improve maintainability. Automated SonarQube scanning, unit testing & deployments by creating GitLab CI/CD pipelines using YAML & PowerShell. Strengthened security with AWS VPCs, ALB/NLB firewalls, and IAM policies. Implemented monitoring for EC2 instances and logs via Elasticsearch to reduce downtime.

Developed and maintained .NET APIs, libraries, batch jobs, and a large-scale CRM system in a private AWS cloud. Reduced runtime errors by converting a sizeable JS codebase to TypeScript. Automated SonarQube scanning, unit testing and deployments with GitLab CI/CD pipelines (YAML & PS). Strengthened security with strict IAM policies, VPCs, and ALB/NLB firewalls. Reduced downtime by monitoring EC2s and logs with Elasticsearch.

Built an AI-powered e-commerce system, including conversational chat and image analysis. Accelerated delivery by creating AI features using Django and a general-purpose API with .NET & a Next.js frontend. Enabled semantic image search using Pinecone vector DB and OpenAI embeddings. Designed microservices architecture and AI flows with diagrams to ease maintenance. Introduced Azure Service Bus for event-driven communication between microservices.