Jan 2019 – Jan 2021 · 2 yrs · San Francisco Bay Area

• I had the privilege of serving as Research Lead and Founding ML Engineer for Walmart.com’s Reranking Team, driving innovation in search ranking algorithms that contributed to $XXXM+ in revenue impact.
• Invented the Rerank Micro Service (RMS) — Walmart’s first microservice architecture for reranking, enabling scalable, high-performance ranking workflows.
• Designed and experimented with Learning-To-Rank (LeToR) models and features such as larger recall set reranking experiments and embedding-based semantic matching between query and item descriptions, significantly improving ranking relevance and search experience.
• Built and automated ML training and signal pipelines using Jenkins, Hive, and PySpark, streamlining model development and deployment.
• Mentored 7+ new team members, enhancing onboarding efficiency and strengthening the team’s capabilities.

Jan 2017 – Jan 2019 · 2 yrs · San Francisco Bay Area

• Yahoo! Finance Team
• Team Lead for Design and Implementation of implicit feedback based Stock Recommendation System based on page visits using Spark MLlib. System provides recommendations to more than 1M+ users every day.
• Built Credibility Score System (CCS) to provide score (0-100) to different stock analysts based on their successes and failures of past ratings.
• Yahoo! Mail Information Extraction Team
• Trained and Productionized Hierarchical Classifier (HC) based on Google Product Taxonomy (GPT) for classification of coupon and order emails into different GPT categories. System classifies 100M+ emails/day.
• Led Design and Implementation of Resource as a Service (RaaS) which allows
• production systems to fetch Machine Learning (ML) models in real-time. Currently, it is used
• by the backend systems of Yahoo! Mail.
• Designed and Implemented Event Classifier System using Convolution Neural Network (CNN) for classifying school event emails in Yahoo! Mail.
• Technology and Languages Used : Hadoop, HDFS, Spark, Hive, Pig, Oozie, Java, Python, Tensorflow, Scikit-learn, numpy, MySQL, Amazon S3, Jenkins.

Jan 2016 – Jan 2016 · 0 mo · New York City Metropolitan Area

Jan 2015 – Jan 2017 · 2 yrs · Tempe, Arizona

• Designing and implementing an Analytics Platform(Threat Intelligence Analytics) for analyzing and collaborating data from different security data Feeds.
• Goal of the project is to find correlation between data coming from different data sources. We are using Data Mining and Machine learning techniques to find these correlations.
• Tools Used : Django Framework, Python, Restful APIs, Java, MongoDB.

Jan 2014 – Jan 2015 · 1 yr · Bangalore(Karnataka)

• Worked with Symantec Corporation, as a Big Data Security Analyst. I was responsible for capturing incident vectors from Intrusion Detection Systems and End Point Protection Products, storing them in proprietary format in HBase and classification of malicious activities using Data Mining and Machine Learning techniques.
• Technologies and Languages Used: Java Spring, IBM InfoSphere Streams, Hadoop, Machine Learning, Hive, Java, R.

Jan 2013 – Jan 2014 · 1 yr · Bangalore

• Worked on EMC's enterprise management tool Documentum and XCP(xCelerated Composition Platform) for creating next generation web applications. Project was RCP (Rich Client Platform) based project and the task was to add a new feature which will help the user to make applications on the tool in an optimal way and to create diagnostics report of the application built.
• Skill Required: Eclipse RCP, Eclipse Modelling Framework, JAXB APIs, DOM APIs.
• Language Used: Java, XML, XSL.
• Worked on EMC Documentum Mobile 1.2.4 iOS App release. Took the full responsibility of the work. Right from Testing environment setup, Running test cases, Bugs fixing to Security scan. Checked compatibility of the app with different Content Server versions. Certified for iOS 7 version. Awarded Bronze Award in the Value Creation category for Q1 2014.
• Skill Required: Xcode, IntelliJ, Vcloud director, Documentum, Restful services.
• Language Used: Objective C, Java, XML, XSL.