Baljinder Singh Email & Phone Number

Dublin, Ca, Us

Bentonville, Arkansas, Us

Working on something awesome that involves streaming multi query optimization on multiple execution engines.

Seattle, Wa, Us

• Prototyped cost based federated query optimizer for Tableau

Pleasanton, California, Us

• Added more expressive SQL like layer for Workday Query Language based on proprietary column store using Apache Calcite and opened paradigms for multi-level joins, relational query optimizations and more push down operators. • Helped implementing vectorized SQL query engine for Workday Query processing.• Implemented initial version of contextual security on columnar index projections.• Proposed new query processing paradigms for lower CPU stalling and higher IPC.• Implemented new storage algorithms for fast update and searching in text data for Workday’s in-memory column store.

Bangalore, Karnataka, In

• Managed and run largest streaming/batch analytics/ML infrastructure in Walmart Labs ingesting 40 TB+ data each day, replicated across 4 data centers and analyzed by multiple teams on our platform.• Designed and developed highly efficient and distributed stream processing engine for clickstream data.• Managed and mentored team of 10-12 developersSIMS (previous team):• Designed and developed a distributed and fault tolerant ETL data pipeline on Mesos cluster• Added analytic support in workflow framework to add insight into user actions and final reports for workflow items.

Bangalore, Karnataka, In

• Designed and developed service oriented architecture for data and algorithm services.• Designed highly sustainable and robust replenishment and data analytics services for Walmart.com e-commerce division.• Designed and developed meta-data driven, highly customizable, distributed & concurrent workflow framework for order processing for Walmart.com e-commerce division.• Worked closely with buyers/planners to gather insight into planning and ordering process to provide better-streamlined and effective solution.

• Lead developer for highly concurrent and pipe-lined data merging and classification framework for named entities.• Lucene based architecture to provide scalable data normalization with social data integration.• Automated data normalization for named entity data set (big data) based on text analysis and social clustering and inference.• Worked on skill to job analytics and skill recommendation prototype.

South San Francisco, California, Us

Core lead developer for SF's new category called Business Execution Software. Lead development of CxO dashboards, metadata driven ETL framework and analytic processing engine for hierarchical roll-ups of org data

Worked on vShere plugin of the product to administrate live and backed up virtual machine management from vSphere consoleWorked on web based admin console for offline data browsing of backed up data (GWT)

San Jose, Ca, Us

Core member of back-end team at Guavus Network Systems and leading the routing module of the product.Worked on routing module which includes designing and developing the better unified data model to abstract the routing state of all the routers in the ISP topology and attempt to find routing anomalies and developing strategies to collect and analyze MPLS protocol data

Santa Clara, Ca, Us

Implementation of Localization module in the product (Java/xml/xslt).Deployment of the product on Linux and Web Logic.