Backend Developer at Merch e

Built and maintained backend services for e-commerce and dependent on project needs. Developed RESTful APIs using Django REST framework, including authentication, serialization, and permission handling for multi-client applications. Modeled relational data using Django ORM and used efficient querying with PostgreSQL (including indexing and query optimization for faster response times). Implemented background tasks with Celery and Redis for sending emails, generating reports, and scheduled jobs. Wrote unit and integration tests with pytest and Django’s test framework. Containerized applications with Docker and set up CI/CD pipelines for automated testing and deployment. Integrated third-party APIs/services such as payment gateways and cloud storage. Collaborated with frontend developers to define clean API contracts for smoother integrations.

Senior Full Stack Developer at Symph

Developed and optimized e-commerce platforms using multiple client-preferred stacks, including JavaScript/TypeScript (React, Angular, Vue, Node.js), .NET (ASP.NET Core), Python (Django, Flask), Java (Spring Boot), Ruby (Ruby on Rails), and Go (Golang). Architected database designs and built RESTful APIs using MongoDB, MySQL, and PostgreSQL. Implemented GraphQL queries using the Apollo GraphQL library. Built complex data streams and handled asynchronous events with RxJS. Created interactive data visualizations using D3.js. Implemented API security using OAuth-related concepts and JWT-based authentication/authorization. Worked with RabbitMQ and Kafka for messaging/event-driven processing. Used Git for version control and Jenkins for CI/CD. Deployed containerized apps using Kubernetes; used Terraform for AWS automation. Designed scalable and resilient systems using AWS services (ECS, S3, DynamoDB, Lambda) and improved test coverage (~95%) via unit/integration/snapshot testing. Applied Goo