About

Santanu Kar is a highly skilled Software Development Engineer 2 at Flipkart with over 4.60 years of experience in the field. He has a strong background in developing systems that power transactional communication between Flipkart and its customers. Nearly all of the notifications (SMS, email, push) that customers receive when shopping on Flipkart go through his code. Santanu has also worked at Furlenco as a Software Engineer, where he was responsible for backend development of microservices dealing with accounting, billing, invoicing of monthly rentals, and refund processing (integration with external refund providers and refund communications). He has also worked at MoveInSync as an SDE, where he developed real-time monitoring systems using Elasticsearch and Kafka. During his internship at Amazon, Santanu worked on a highly scaled microservice architectured platform dealing with the verification and registration workflows of a seller. He also developed and automated solutions for smooth software release to production. He worked on various AWS technologies like DynamoDb, SQS and SNS, Lambda, Data Pipelines, and S3. At Flipkart, Santanu has scaled up the transactional communication system with micro-optimizations to achieve a 93% increase in throughput, 91% lower database load average, 77% lower database CPU usage, and 1/200th latency for API calls. He has also re-designed and re-wrote the communication system to reduce developer pain points, make it more maintainable, and reduce time required for product-driven changes in communication flows. Currently, Santanu is working on an API gateway for modularization of customer self-serve pages like 'order details', 'order confirmation', etc., to speed up A/B testing capability. He has also led his team in optimizing and scaling nearly all of their backend systems for big sale events in 2022. Santanu holds a Bachelor of Technology (B.Tech.) in Computer Science from the College of Engineering and Technology. He is proficient in Software Engineering, Backend Development, Microservices, AWS, Integration, Elastic Search, Kafka, and other relevant technologies.