May 2012 – Feb 2019 · 6 yrs 9 mos · San Francisco Bay Area

• Designed and created multiple low latency, highly available web services serving millions of requests per second
• Performance tuned the services for high availability and resiliency - https://medium.com/netflix-techblog/tuning-tomcat-for-a-high-throughput-fail-fast-system-e4d7b2fc163f
• Added and maintained multiple layers of caching to provide sub millisecond response
• Delivered multiple projects successfully involving a very large number of teams

Sep 2008 – May 2012 · 3 yrs 8 mos

• Rockyou's Ad Network served billions of impressions every month. As one of the initial members of the Ad Network team, designed and developed many of its features. A few of them are:
• A thread-safe, scalable, distributed hash map to track user data across multiple machines
• User interest based recommendation engine to improve ad delivery algorithms
• Dynamic logging framework to manage log files
• Pluggable module for targeting features
• Monitoring service to keep an eye on the health of servers
• Multiple data migrations under strict time limits involving millions of records
• Led and mentored teams of engineers on various projects
• Multiple design and code reviews

Aug 2006 – Jul 2008 · 1 yr 11 mos

• Searching Web forms: Used Lucene to build a search engine that allows users to search a collection of web forms. Developed a new machine-learning-based algorithm for automatically deriving snippets describing the forms returned in the search results.
• Finding correspondences among form attributes: Developed a new framework that automatically identifies semantically related attributes from a large collection of forms. The framework combines techniques from Information Retrieval and Data Mining and is able to obtain high accuracy for forms in a set of domains.
• Software Environment - Java, Lucene, Linux, Windows

Nov 2004 – May 2006 · 1 yr 6 mos

• Member of the "Revenue enhancement team", which had the goal of designing new revenue generation strategies by using data analysis methods on the customer database.
• Segmented customer data for large clients and proposed revenue generation strategies based on customer behavior.
• Reduced the execution time of time intensive queries by around 50%, by making a judicious use of the various indexes and partitions available on the database.
• Automated the generation of several reports using SAS.
• Developed computer based trainings for SAS/SQL as part of corporate trainings.
• Software Environment: SAS, Oracle, Linux

Mar 2003 – Oct 2004 · 1 yr 7 mos

• Created data cubes for several important reports using OLAP tools.
• Interacted with business heads of various departments to design the electronic payment system.
• Managed a team of 3 for the development of the financial system.
• Software Environment: Oracle, SAS, Linux

Jan 2002 – Mar 2003 · 1 yr 2 mos

• Developed various utilities for a multi functional control unit of Toshiba Tech, capable of printing, faxing, photocopying and binding. These utilities were:
• An e-mail client with security features.
• An http client capable of transacting over a secured network
• Software Environment: C, Windows, Linux