Rajarshi Sarkar

About Rajarshi Sarkar

Software Engineer with 9+ years of experience across Google, Amazon, and Walmart, specializing in Java, Big Data, Distributed Systems, and Microservices. Proven expertise in building scalable, high-performance, and secure distributed systems across domains like Big Data, Cloud Computing, E-commerce, and Retail.At Amazon Web Services, I was part of the EMR team powering petabyte-scale analytics using Apache Spark, Hive, and Trino. My work includes Hive partition pruning optimizations, integrating Iceberg into EMR with open-source contributions, making S3A the default file system, implementing Fine-Grained Access Control (FGAC), and optimizing EMR releases.Previously at Walmart, I designed and developed the cumulative data repository integrating real-time transactional data across the supply chain, enabling near real-time analytical insights. I also led the development of Data Lake products, including Data Pipeline, Data Quality, Metadata Manager, and Data Acceleration tools, with a strong focus on data integrity, governance, and end-to-end lineage.Open-source contributor to Apache Iceberg, Trino, and Gimel.

Experience

1. Sr Software Engineer

   Google

   Aug 2025 — Present · Bengaluru, IN

Education

• Arizona State University

  Master of Computer Science, Big Data Systems

  2020 — 2022

• Birla Institute of Technology, Mesra

  Bachelor of Engineering, Information Technology

  2012 — 2016

Skills

• Teradata
• Data Structures
• Css
• Php
• Algorithms
• Groovy
• Sonarqube
• Python
• C++
• Matlab
• Testng
• Angularjs
• Hadoop
• Apache Spark
• Presto
• Shell Scripting
• Svn
• Apache Beam
• Java
• Jquery
• Spring Boot
• Greenplum
• Sql
• Linux
• Mvel
• Docker
• Mysql
• Html
• Drools
• C
• Programming
• Operating Systems
• Oozie
• Windows
• Bash
• Eclipse
• Sap Hana
• Kubernetes
• Talend Open Studio
• Os X