About

Rajendra Kumar is a highly skilled Java and Spring framework developer with 4 years of experience in back-end technologies. He is a graduate of IIT Kanpur with a degree in Materials Science and Engineering. Rajendra has a diverse experience in Java 8, Spring Boot, Spring Reactive, Mongo DB, Restful Web Services, KAFKA, and MySQL. He is a learning enthusiast, with a passion for exploring and solving complex business problems. Rajendra is a collaborative team player with a zeal to lead and achieve organizational goals. Currently, Rajendra is a Senior Software Engineer at Airtel, where he manages the subscription lifecycle of SaaS products for both manual and automatic modes of renewal. He has implemented batch processing and employed DB locking to enable bulk data processing in a distributed system. Rajendra ensured a highly configurable application to support a new SaaS product subscription journey with minimal effort. He used MongoDB to store data, Cron Scheduler to schedule tasks, and Java 8 for implementation. Rajendra also designed an auto-pay model to remove customers' overhead of manually paying for service renewal. He developed Payments Service to handle all payment-related activities such as debiting money, updating status, etc. Rajendra followed the Event-Driven Architecture to take advantage of asynchronous processing needed in multi-step order journeys. He also developed a microservice to interact with different SaaS providers to create and provision Airtel customers' subscriptions. Previously, Rajendra worked as an Assistant Manager at Citi, where he designed a custom rule engine to do validations and enrichment for incoming cross-border payment files. He also developed a message replay utility that fetches Kafka messages using offset ID and has the functionality to send it to different destinations such as Kafka Topic, JMS Queue, or DB. Rajendra was also responsible for the framework design of report generation, where he used the concept of load balancing to distribute incoming requests to five different nodes. Rajendra's education history includes a Dual Degree (B.Tech. -M.Tech.) from IIT Kanpur, where he graduated in 2017. His tech stack includes Software Engineering, Spring, Infra, Java, Kafka, Web, MongoDB, Spring Boot, Microservices, MySQL, Backend, and Test. With 5.44 years of relevant experience, Rajendra is a highly skilled and motivated professional with a proven track record of delivering high-quality software solutions.