Ravi Kumar C S

Experience

1. Principal Engineer, Ranking

   Amazon

   Jan 2022 — Present · Palo Alto, CA, US

   Driving the long-term technical vision for a flagship whole search page optimization initiative,leading a 15-engineer cross-org team (Search and Ads) to transform Amazon Search from aflat results list into a thematically organized experience.* Led the re-architecture of the core search dataset — the foundational source for all modeltraining objectives and behavioral ranking features—improving purchase attribution coverageby 20% and spam detection accuracy by 10% through novel ML-driven approaches, acrossall marketplaces.* Spearheaded the design and delivery of a real-time customer behavior feedback system usingAWS Kinesis, Lambda, and DynamoDB, powering multiple mission-critical search applicationsincluding new product exploration and High Velocity Event experiments and contributinghundreds of millions of dollars in revenue.* Served as a Search Correction of Errors (COE) bar raiser, driving cross-org architecturalchanges that addressed systemic root causes and permanently prevented repeat incidentsacross Amazon Search.* Wrote 3 Year plans and project proposals on new ideas to convince leadership with long-termbets for Search.

Education

• National Institute of Technology Durgapur

  B.E, Computer Science

  2001 — 2005

• University of Cincinnati

  Masters, Computer Science

  2008 — 2010

Skills

• Machine Learning
• Mapreduce
• Hadoop
• Java
• Python
• Information Retrieval
• Distributed Systems
• Artificial Intelligence
• Data Mining
• Mysql
• R
• Scalability
• Data Analysis
• Postgresql
• Matlab
• Big Data
• Git
• Amazon Web Services (Aws)
• Hbase
• Search Engine Ranking
• Search Analytics
• Weka
• Apache Drill
• Apache Calcite
• Amazon S3
• Amazon Dynamodb
• Angularjs
• Linux
• Perl
• Agile Methodologies
• Algorithms
• Javascript