• Built and maintained backend services with Java, Spring Boot, Hibernate, and JPA to manage Shopify workflows including order syncing, product updates, and fulfillment logic across multiple storefronts.

• Developed RESTful and GraphQL APIs in Node.js, enabling seamless data exchange between internal dashboards and embedded Shopify apps used by store managers and fulfillment teams.

• Engineered real-time data pipelines with Apache Spark and Kafka Streams, processing Shopify events (orders, refunds, inventory changes) for analytics, monitoring, and automated alerting.

• Designed robust data management solutions using MySQL for structured records (SKUs, pricing, order history) and MongoDB for schema-less Shopify metafields and configurations.

• Built React.js, TypeScript, JavaScript, HTML5, and CSS3 dashboards for real-time visibility into sync statuses, webhook failures, and system metrics, improving transparency for business teams.

• Automated backend workflows with Python on Linux, handling bulk product imports, log parsing, API health monitoring, and vendor integrations to reduce manual intervention.

• Deployed containerized microservices with Docker, Helm, and AWS EKS, implementing blue-green deployment strategies and scaling event-driven pipelines with S3, SQS, Lambda, CloudWatch, and ELK Stack.

• Implemented infrastructure-as-code with Terraform and GitLab CI/CD, streamlining provisioning, deployments, and release cycles across dev, QA, and production environments.

• Enhanced reliability and security by integrating RabbitMQ for async processing, developing automated test suites (JUnit, Mockito, REST-assured, Selenium), and securing APIs with Spring Security, OAuth2, and JWT (RBAC) in an Agile environment.

• Contributed to a scalable e-commerce and order management platform using Java 11, Spring Boot, and J2EE, building RESTful microservices and integrating with payment, logistics, and inventory systems for seamless operations.

• Developed Node.js services with Express.js and TypeScript for notifications and real-time updates, boosting system responsiveness and reducing latency for non-critical user features.

• Created reusable front-end components in React.js, Redux, Material UI, and TypeScript, while migrating legacy JavaScript modules, enhancing maintainability and reducing defects.

• Implemented JWT-based authentication and RBAC across Java and Node.js services to enforce secure, role-based access for both end-users and internal business applications.

• Integrated Apache Kafka for real-time event streaming between order, shipment, and inventory services, enabling faster synchronization, decoupling workflows, and improving scalability.

• Designed efficient schemas and indexing strategies in PostgreSQL and MongoDB, applying partitioning techniques to optimize query performance on high-volume order and customer datasets.

• Containerized services with Docker and supported AWS ECS cloud deployments, collaborating with DevOps to provision and manage infrastructure using Terraform for IaC.

• Built CI/CD pipelines with Jenkins and GitHub Actions, integrating SonarQube, ESLint, and Prettier to enforce code quality standards and ensure consistent release cycles.

• Enhanced reliability with unit/integration testing (JUnit, Mockito, Jest, Supertest), proactive monitoring using AWS CloudWatch, Prometheus, Grafana, and API documentation via OpenAPI, Postman, and mock data in an Agile.