Aug 2018 – Dec 2019 · 1 yr 4 mos

• Search Backend for Walmart Grocery
• Tech Lead for Walmart Grocery's Rollback Facets
• Led efforts to setup rollback facets in Online Grocery Search
• My responsibilities entails
• Develop multi-tenant and scalable design to extend existing framework for new requirements.
• Collaborate with geographically dispersed team by effective work distribution and testing strategy.
• Refactor legacy code and improve test coverage.
• Deliver with Quality by conducting design reviews with Search Tech Council.
• Tech Lead for Walmart Grocery's Expanding Assortment Project.
• Leading efforts for building Variant Experience on Walmart Grocery Search.
• My responsibilities entails
• Cross team conversations for finalising data contracts with upstream and downstream projects.
• Design architecture and development of code touching major search components.
• Performance testing of the new functionality.
• Setting up utility data pipelines.
• Building business metrics to measure the improvements of the new functionality.
• Other Projects:
• Improve scalability of spark indexing job used to extract catalogue data and upload's extracted data to search systems.

Jun 2017 – Aug 2018 · 1 yr 2 mos

• SPARK
• Build a Framework on top of Spark which exposes methods to allow customers to configure job's end points (which includes Kafka, Solr, Cassandra, HDFS and JDBC) and write only the business logic.
• Key features are schema validation, exception handling, DAG optimization.
• Automate building of Spark cluster using cloud machines and monitor job progress using Telegraf and Medusa.
• STORM
• Use Storm to stream data from Cassandra to Kafka and Kafka to Solr.
• Develop Spouts and Bolts for these topologies.
• Maintain clusters of Kafka, Storm and Solr on One Ops.
• Assist application teams to spin up Storm topologies on One Ops.

Mar 2017 – Jun 2017 · 3 mos

• CASSANDRA AND KUBERNETES
• Understand Kubernetes framework .
• Develop Rest Api Service to deploy customized Cassandra cluster over Kubernetes using Play framework and Scala .
• Automate end to end deployment of microservices like SOLR, SPARK, ZOOKEEPER, KAFKA and more over Kubernetes.
• Develop Spark Jobs to consume from Kafka, filter and transform and produce to Kafka.

Jun 2016 – Aug 2016 · 2 mos · Redwood city CA

• Developed highly scalable, multi-threaded framework in Go to create loads on cluster to benchmark the fault tolerance of Portworx’s product.
• Developed Docker Cassandra cluster and benchmark it using Cassandra stress tool.
• Customized Containers by writing Docker files and pushed to Docker Hub.

Aug 2015 – Dec 2016 · 1 yr 4 mos

• Assist in teaching Algorithm’s course in 2 sections.
• Review and correct class assignments and exams.
• One to one interactions with undergraduates every week to clarify their doubts.
• Facilitate undergraduates with their project assignments.

Aug 2015 – Dec 2015 · 4 mos

• Explored existing literature in the field of human action recognition using computer vision
• techniques.
• Analyzed current problem of using Microsoft Kinect for human gesture recognition.
• Researched to develop applications to help rehabilitate people with spinal cord injuries.

Aug 2013 – Jul 2015 · 1 yr 11 mos · Bangalore

• Worked on a product called VPLEX which is storage virtualization software featuring high availability, cloud computing and seamless data migration.
• Re-architected to improve performance of user operations over VPLEX by migrating heavy business logic from Management Server to a new layer of code closer to data.
• Improved performance of few operations by as much as 4 times.
• Automated feature tests and performance tests which would run periodically to catch regressions.
• Re-factored existing code to make it more readable and maintainable.
• Collaborated with cross-functional teams of developers, subject experts, business analysts, designers, and product owners on a regular basis, during a complete product life-cycle.
• Presented an idea on “Intelligent Defect Relationship Tool” in EMC’s Annual Innovation Conference.
• Awarded Bronze award for my contribution.

Jul 2012 – May 2013 · 10 mos · Dispur, Assam, India

• Designed an algorithm for data-mining over multi-database system.
• Overcame the challenge to derive association rules across multiple databases with huge size
• and different configuration in terms of number of attributes and minimum support.
• Researched to prove that ordering databases based on increasing minimum-support can opti-
• mize an existing algorithm.
• Proposed algorithm was developed in C++ and was three times more efficient.

May 2012 – Jul 2012 · 2 mos · Bangalore

• Worked on Patent Litigation based technical consultancy.
• Presented deep and thorough analysis containing potential infringer for patent “Mobile cellular
• telecommunications infrastructure based multi-user applications”(US7801541).
• Conducted research for validity analysis of patents “Electronic currency, electronic wallet therefor and electronic payment systems”(US7590602) and “Light emitting panel assemblies”(US7434973)
• by finding relevant prior arts that could have potentially invalidated the patents.
• Awarded the Best Intern Award, for my analytic skills.

May 2011 – Jul 2011 · 2 mos · Bangalore

• Built a SwitchDBServer(SDBS) System that allowed switching between day and night shift servers for Patient Services Accounting System deployed at Ramakrishna Sevasharama Hospital.
• Facilitated data-migrations over distributed system comprising of peer-to-peer shift servers while maintaining database consistency.
• Provided support for transparency of switchover operations, and simplified management via a
• dashboard style UI.
• Developed on Oracle 10g Express Edition database using Oracle Application Express 4.0.2.
• Submitted a paper titled “SwitchDBServer: A Case of Distributed Computing in Shifts”, at the 8th International Conference on Distributed Computing and Internet Technologies, Bhubaneswar, Odisha.