waqasar mehmood

Created multiple data ingestion pipelines to extract, transform and load structured and unstructured data from multiple sources. Working closely with Data Science team to create ML based linking workflows. Created monitoring platform for data pipelines for observability. Improved performance and resilience of latency critical ETL workflows by migrating them into Autosys from Sql Server Agent.

Contributed software engineering expertise in the development of Java based distributed, multi-tiered, modular Oil & Gas exploration solution (DSIS-Decision Space Integration System). Developed and extended existing database connectors for Oil & Gas exploration and production solutions, OpenWorks, Recall and Petrel. Developed data migration utility using TEIID to transfer geophysical data between existing products using a common model.

Participated in multiple R&D tasks in the development of distributed NoSQL database (NosDB). Developed SQL like Query System to query JSON based documents in database. Implemented distributed JOINs using MapReduce and One Bucket Theta JOIN. Achieved 50% performance gain of distributed joins by implementing hash-based comparison for equality and interval tree for range-based evaluation. Played key role in development and maintenance of distributed and clustered cache (NCache).