# Kumar Ritesh Ranjan Sinha > Engineering at SoFi Location: San Francisco, California, United States Profile: https://flows.cv/kumarriteshranjansinha Software Engineer with diversified experience who likes to work on cutting edge technologies, problems, and leverage opportunity to enhance skills. Highly motivated, quick learner, able to work independently or on a team, and drive solutions. Specialties: Java, REST APIs, Distributed Systems, Information Retrieval, Apache Kafka, Apache Spark Streaming, Apache Storm, Apache Cassandra ## Work Experience ### Staff Software Engineer @ SoFi Jan 2022 – Present | San Francisco, CA ### Senior Software Engineer @ DocuSign Jan 2021 – Jan 2022 | San Francisco, California, United States ### Member of Technical Staff @ Oracle Jan 2020 – Jan 2021 | Santa Clara, California, United States Oracle Cloud Infrastructure - Roving Edge Infrastructure(https://www.oracle.com/cloud/roving-edge-infrastructure/) ### Software Engineer 2 @ eBay Jan 2019 – Jan 2020 | San Jose, California • Built a time-series forecasting model for efficiently managing workforce operations at eBay call centers • Worked on building a realtime data pipeline to optimize the REST API response time from 12 seconds to 1 second using open source big data technologies - Apache - Kafka, Flink, Cassandra. • Benchmarked and analyzed 3 databases under different loads, server capacity & use-case - Apache Cassandra, Apache Ignite, and Elasticsearch for write and read throughput. ### Software Engineer @ Infrrd Jan 2015 – Jan 2017 | Bengaluru Area, India Core member of the product team for "Inferlytics" - It is a first of its kind integrated eCommerce search & browse experience engine which combines power of natural language processing and domain-specific knowledge bases to offer a differentiated experience for retail customers • Worked on developing and designing the Real-time Analytics platform end to end using Big Data tools (Apache -Storm, Kafka, Zookeeper) for capturing and processing messages, detecting actionable events in the message stream, and reporting meaningful insights in the data • Installed and configured multi-nodes fully-distributed Apache Storm, Apache Kafka, Apache Zookeeper, Apache Cassandra, Druid and Elastic Search cluster. • Cluster capacity planning, performance tuning, cluster monitoring, troubleshooting. • Load balancing clusters to add and remove nodes based on the traffic. • Scripts for automating all the deployment. Gimlet (OCR platform) • Designed and developed a Testing tool for the testing team to validate the results from the OCR extraction. It was a REST API and Swagger UI based application. The application calculated the accuracy of the data extracted from all the receipts feed to the OCR platform and sent the detailed report by email, which was built using JavaMail API. • Worked on creating REST API using embedded jetty in Java to extract locale from the invoices and expenses receipt which was feed to the OCR platform, the locale contained the city, country code, language and the locale value. It used Ngram approach and fuzzy matching to find the city from the extracted text. ### Software Engineer @ TEKsystems Jan 2014 – Jan 2015 | Hyderabad Area, India Big Data Analytics: • Worked on building In-House Tools which were presented to the customers as POCs. • Developed a Social Media Plug-in Platform which retrieves data from Social Networking sites for analytics. • Implemented and validated various tools (Storm and Kafka) of the Big Data Platform in the Data Analytics field to a number of use cases, e.g. Oil and Gas sector and Retail sector. • The work involved using the Java APIs of these open source tools and writing customer oriented specific solutions. ## Education ### Master of Science - MS in Computer Science University of Southern California ### Bachelor of Engineering (B.E.) in Computer and Information Sciences, General The National Institute Of Engineering, Mysore ### High School in Mathematics, Physics, Chemistry, Computer Sciences Loyola High School, Patna ## Contact & Social - LinkedIn: https://linkedin.com/in/ritesh-sinha --- Source: https://flows.cv/kumarriteshranjansinha JSON Resume: https://flows.cv/kumarriteshranjansinha/resume.json Last updated: 2026-04-12