Joined as the first engineering hire post-COVID to stabilize and rebuild a legacy IoT platform handling real-time sensor data and alert notifications.

Upgraded frontend from React 16 to React 18 and refactored class components into functional components using Hooks, improving performance and maintainability.

Implemented Redux Toolkit for efficient state management and streamlined API handling.

Enhanced UI using Bootstrap, SCSS, and Material UI, and developed dynamic dashboards for real-time sensor data visualization and consumption trends.

Resolved dependency issues and stabilized local development environment for both frontend and backend.

Built WebSocket-based real-time data streaming for live device monitoring.

Developed and enhanced RESTful APIs using Node.js and Express.

Led database migration from MongoDB to MySQL, transforming nested data structures into optimized relational schemas.

Improved database performance through query optimization and indexing strategies.

Refactored tightly coupled backend modules using an event-driven architecture with Node.js EventEmitter to improve modularity and scalability.

Implemented Redis queue-based batch processing for database writes, reducing load from high-frequency IoT device data.

Scaled system to support 10,000+ devices using Docker-based horizontal scaling, Nginx IP hashing for session stickiness, and Redis adapter for WebSocket synchronization.

Resolved duplicate MQTT message processing issues using MQTT load-sharing techniques.

Containerized frontend, backend, and database services using Docker and Docker Compose for consistent deployment.

Configured Nginx as reverse proxy for traffic routing and improved reliability.

Created technical documentation for system architecture, local setup, and Docker-based deployment.

Designed and built end-to-end microservices architecture for a fintech platform using Node.js, PostgreSQL, RabbitMQ, gRPC, and React.

Developed full authentication system with OTP-based mobile login (Twilio), JWT-based web authentication, and RBAC authorization.

Designed two-layer API Gateway using Nginx (edge layer) and Express for routing, security, and load balancing.

Built payment orchestration system with webhook handling, idempotency protection, and event-driven workflows.

Designed and implemented event-driven notification service for SMS and email delivery using RabbitMQ, Twilio, and SendGrid.

Implemented centralized external integration service using Adapter pattern for payment, KYC, and verification providers.

Developed admin dashboard using React, Redux Toolkit, Tailwind CSS, and secure cookie-based authentication.

Containerized services using Docker Compose with health checks, retry mechanisms, and monitoring.

Continued contributing in an equity-based capacity post full-time tenure.

Fixed production bugs, improved system stability, and optimized existing APIs.

Added incremental backend features and enhancements based on business needs.

Supported deployments, environment fixes, and production troubleshooting.

No exclusivity or conflict of interest; open to full-time opportunities.