Nimesh Jayamanne

OBJECTIVE
• Craft an online exam proctoring application leveraging AWS services.

BACK-END FEATURES
• Online exams hosted using AWS Chime
• Video processing via FFmpeg and ECS Fargate tasks
• Fraudulent activity detection using AWS face and label detection APIs combined with AWS Rekognition
• API gateway implementation with AWS Lambda functions
• Back-end flow management with AWS Step Functions
• GraphQL APIs crafted through AWS AppSync
• User management, authentication, and authorization using AWS Cognito
• Back-end infrastructure completely hosted on AWS with Infrastructure as Code (IaC) designed via AWS CDK using TypeScript

FRONTEND (UI) IMPLEMENTATION
• Designed using React/Next.js with TypeScript.
• Implemented state management using custom React Hooks and React Context.
• Did styling using CSS modules.
• Deployed the front-end app using AWS CloudFront distribution.
• Implemented the front-end Infrastructure as Code (IaC) using AWS CDK.

By combining powerful AWS services with React/Next.js, I delivered an app with robust proctoring capabilities, ensuring the integrity of online exams.

Developed a comprehensive student tracking system—a blend of web technologies, cloud services, and multimedia processing tools designed to monitor and gauge student engagement during online learning sessions.

KEY HIGHLIGHTS
• Chrome Extension: Enabled screen and webcam video uploads to AWS Chime meetings.
• Engagement Analytics: Used FFmpeg and AWS face detection for real-time engagement metrics.
• Web Activity Tracking: Captured students' web interactions via intercepted XHR and Ajax calls.
• Integration: Combined the Chrome extension with an Electron app for initiating AWS Chime meetings.
• Back End: Utilized AWS Lambda (TypeScript) with API Gateway for scalable back-end services.
• Video Processing: Conducted video synthesis using AWS ECS Fargate tasks.
• Admin Portal: Developed using React and Next.js, hosted on AWS with S3 and CloudFront.
• Monitoring: Managed system alarms and analyzed CloudWatch logs.
• Infrastructure: Designed and provisioned using AWS CDK.

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A tightly integrated configurable suite of a core passenger service system (PSS) and eCommerce solutions allowing airlines to move away from the traditional and begin to act as retailers and merchandisers (clients: Air Arabia, Mahan Air).

An airline seat inventory management system built for Air Arabia. It provides an interactive UI for the users to create and manage seat inventory for flights and APIs to integrate with other systems in the airline's operations. I joined this project midway through its development and went on to develop key features, such as inventory roll forward, inventory transfer, and reprotection.

Embedded Chromium browser in JFrames to develop a desktop-based POS application using the Java Chromium Embedded Framework (JCEF). Intercepted browser request handlers to load UI content from the local file system.

Implemented Java SDK for Datecs FP printers to communicate with POS applications using serial communication and TCP/IP connection. This included error handling and supporting different charset encoding used in FP hardware devices.

Implemented PDF Table Writer using Apache PDFBox. The following functionalities and features were supported:

• Page margins, table margins, and cell padding
• Word wrapping
• Pagination support for large records
• Support image icons to table columns