Executed migration from monolithic architecture to microservices for Authentication, Web/Mobile UIs, and Device and Customer Notification services, including asynchronous programming.

Served as the pivotal founding contributor for Andium's device service distribution and scaling initiatives.

Restful App Layer Service:

Handled requests for specific CRUD operations.

Implemented role-based authentication and permission, intra-service communication.

Conducted SQL/Postgres/Redis/GraphQL transactions and designed database schemas.

Ensured continuous code review and improvement through Agile development.

Implemented event-driven state-based monitoring and alerting system with AWS SQS and Boto3, along with FastAPI-based microservice.

Designed and implemented JWT token and API key-based authentication service.

Led device migration from 0-1 to AWS IoT infrastructure, identifying optimization opportunities for the existing system.

Leveraged AWS IoT services for end-to-end data ingest with Elasticsearch, DynamoDB.

Handled all backend integration for data upload, state management, and device management including unit testing.

Utilized AWS IoT for device registration and Greengrass, including device provisioning.

Managed image and video uploads, including branding and appropriate storage, accessible through CloudFront.

Implemented AWS Kinesis video live streaming with MQTT.

Developed and migrated backend from Yii2 advanced (PHP), MySQL to Django Rest framework (Python) and MongoDB.

Continuous development and integration of new features like notifications, messaging, and login for ESV mobile app serving currently in the market (consumer (C2C) and supplier (B2C)).

Server maintenance and deployment of new systems on AWS platform (EC2, RDS, Elastic Beanstalk).

Designed and tested JSON, REST APIs to serialize the optimal responses to make the app fastest.

Individually responsible for all backend tasks, security, and database migrations.