1. Took Apache Bookkeeper Satestore from open source which was in non functional state and took it all the way to production.

2. Lead team of three principal engineers to implement seamless cutover of Apache Pulsar based data pipeline from one cluster to another cluster.

3. Key engineering resource to productionize Apache Pulsar based data ingest pipeline at scale of Petabytes a day.

4. Leading an effort to contributing internal changes in Apache Bookkeeper back to open source.

Product Sherpa:

Sherpa is Yahoo's next-generation cloud storage platform. It is a hosted, distributed and geographically replicated key-value data store. It is a NoSQL solution that has been developed by Yahoo, to address scalability, availability, and latency needs of Yahoo websites. Sherpa has capabilities such as elastic growth, multi-tenancy, global footprint for local low-latency access, asynchronous replication, REST-based web service APIs, novel per-record consistency knobs, high availability, compression, secondary indexes, and record-level replication.

Sherpa is implementation of highly acclaimed paper called PNUTS.

http://www.vldb.org/pvldb/1/1454167.pdf

Shmproxy: This is Yahoo's out of the box solution for TCP transport with connection multiplexing. Almost entire yahoo internal communication flows through shmproxy.

Platform team at Yahoo!.

Name of the project is RateLimiter. When third party uses yahoo services through Yahoo API. RateLimiter keeps an eye on the usage and when usage goes beyond the limit, request is denied or charged.

Technology: C++/STL/boost Multi threading.

• - Designer and developer of Native Client. Technology used was C++/STL Multithreading using ACE Socket programming using ACE.

Domain was distributed caching.