Debasish Roy

SITA collaborates with airline customers to digitize and automate operations for a better experience for travelers. The product SITA Baggage Management provides customer service for lost or damaged baggage of passengers. My key contributions in this project are:

• Implementation of role-based authorization and authentication using JWT.
• Performance enhancement in MongoDB with custom indexing.
• Implementation of lambda function to process data from the Kinesis data stream.
• Handle failure scenarios using DLQ.

Allegiant is a travel and hospitality company. We are mainly working on Navitaire integration with Allegiant applications. For this client, our responsibilities are new feature development, integration with other applications, and migration from monolithic to micro-service architecture. My key involvements are:

• Implementation of microservice architecture, distributed transaction management, distributed logging, fallback mechanisms, and service discovery.
• Implementation of RESTful services and API Gateway.
• Use of ECS and ECR.
• Implementation of scheduler using Lambda and EventBridge.

We worked in a product - OMS (Order Management System). The Order Management framework is used to maintain and manage the order of products, mainly in the telecom domain. The purchase of a cellular connection, as well as the delivery and activation of the same, is managed with OMS.

My responsibilities are:

• Implementation of REST API, coding, and code review.
• Understanding the business requirements from user stories and finalizing the design by discussing with the business analyst, product owner, and customer.
• Leading Scrum, sprint planning, and estimation.
• Coordinating with the Business Analyst during the full development life cycle.

I worked in Ericsson Multi-Activation (EMA) and Ericsson Dynamic Activation (EDA). This is a telecom product where we need to develop an adapter layer for communication between various vendors, and the core activation and provisioning system. My key involvements are:

• Development of a Java SOAP-based web service, along with unit testing and end-to-end integration.
• Integration in CI/CD/CT Pipeline, and Release Management.
• Conversion of monolithic to micro-service architecture migration.

The Notification Management System (NMS) is a system that monitors an application and initiates a notification. It also allows live chat support between the users. My key contributions are:

• Implementation of Spring WebSocket with Redis to implement a chat service.
• Coding and Unit Testing
• Migration of a single-tenant application to a multi-tenant application.

I have started my career as a software developer here. My responsibilities are coding, unit testing, and implementation of new functionalities based on client requirements.

• Modified existing software to correct errors, adapt to newly implemented hardware or upgrade interfaces.
• Assisted with planning, designing, coding, debugging, testing, documenting, and maintaining software applications.