Oct 2017 – Sep 2021 · 3 yrs 11 mos · United States

• Worked as a Principal Software Engineer in the Prism Analytics Database team at Workday. During my tenure, I gained valuable experience in developing and overseeing large-scale, intricate cloud services designed to accommodate thousands of customers.
• Notable aspects of my work encompassed responsibilities such as building distributed system services, tenant management, and implementing disaster recovery solutions for Workday's analytics service.

Oct 2015 – Oct 2017 · 2 yrs · Palo Alto

• Lead the engineering efforts in re-architecting the VSphere SDRS (Storage Distributed Resource Scheduler) for better scalability in the CLOUD environments.
• Worked on various improvements of the VMWare VSphere product's stability and performance.

Feb 2012 – Sep 2015 · 3 yrs 7 mos

• I had a great opportunity to work with the Exadata Database Server. Exadata is Oracle's flagship distributed database with the scalable smart storage that has the ability to offload the query processing, smart flash cache services, storage index, columnar caching etc..)
• Implemented the Flash Cache IO resource management. This is one of the critical features that enabled the Exadata database server for the Oracle cloud.
• Implemented hybrid workload support for caching the table SCANS along with the OLTP txns.
• Implemented the Exadata storage cell heartbeat mechanism using the Infini band network
• Fixed several critical customer issues and several product enhancements.

Feb 2009 – Jan 2012 · 2 yrs 11 mos

• Co-Founded and Architected the Oracle Database Appliance which is a clustered database (RAC) with storage in a box that provides high performance and highly available database services.
• Responsibilities held:
• Architected end-to-end solution
• Built the entire engineering team from the scratch and managed the team.
• Designed and Developed:
• StorageManager to manage the configuration, fault-tolerance etc..
• Resource Management Framework to support the database appliance life cycle
• Oracle Appliance Kit

Oct 2004 – Mar 2009 · 4 yrs 5 mos

• At Oracle, I have joined RAC database server team and got an opportunity to build the high availability services (CRS) for RAC database. My work includes:
• Developed HA Agent Framework
• Developed Replicated State Machine for CRSD policy engine
• Added several improvements in CRS (Cluster Ready Services)
• Designed and implemented CRS upgrade framework

Mar 2001 – Oct 2004 · 3 yrs 7 mos · Mountain View, CA

• While at Veritas, I was given the chance to delve into and work with distributed systems designed to deliver high availability and scalable storage.
• I was instrumental in the design and development of the Transaction Extraction Engine, where I implemented Change Data Capture functionality by reverse engineering Oracle REDO logs.
• I served as the lead engineer in the design and development of the Veritas Cluster Computing Server, utilizing the GAB (Group Atomic Broadcast) protocol.
• I also developed the IO Fencing driver (VxFen) which was used for managing IOs in clustered volumes

May 1997 – Mar 2001 · 3 yrs 10 mos · Menlo Park , CA

• Informix was the first software company I worked for, providing me with my first experience with intricate software systems such as the RDBMS kernel. This role offered me the chance to gain knowledge about the design and execution of large-scale software systems. My tenure at Informix encompassed the following tasks:
• Worked in integrating Verity Text Search with Informix Universal Server
• Optimized B+Tree index for OLTP transactions to increase the throughput.
• Lead engineer in developing the trigger based replication solution for mobile users
• Fixed several issues in Memory Management and Scheduler in Informix kernel
• Ported Several utilities from Solaris to Windows.