Jul 2021 – Sep 2024 · 3 yrs 2 mos · Bangalore Urban, Karnataka, India

Jan 2020 – Jul 2021 · 1 yr 6 mos

Feb 2017 – Dec 2019 · 2 yrs 10 mos

• Worked on numerous products in WalmartLabs:-
• Wrote the following blog:-
• Blog :- https://medium.com/walmartlabs/member-transaction-history-architecture-8b6e34b87c21
• 1) Member Transaction History:- Designed / Architected member transaction history system from scratch in scalable fashion.
• It serves millions of read requests per second.
• It is used for order analytics.
• Ingestion pipeline was built and deployed to support idempotent data ingestion.
• Led a team of 5 people to build this product from scratch.
• Wrote the following blog:-
• Blog :- https://medium.com/walmartlabs/member-transaction-history-architecture-8b6e34b87c21

May 2015 – Jan 2017 · 1 yr 8 mos · Bangalore

• PROJECTS
• Title: Reviews / Rating / User Generated Content
• Period/Size: March’15 – Present
• Responsibilities:-
• Major contribution in building scalable Review / Rating system which talks to other Snapdeal Services
• Developed a framework which supports text reviews / image reviews/ positive-negative reviews -> built custom sentiment engine for unstructured english.
• Developed Intelligent Review system which rated the content of review text, sentiment detection, review score based on user rating / product rating which helped in search.
• Developed Selfie framework for Snapdeal Users.
• Built a framework which supports text reviews / image reviews/ positive-negative reviews -> built custom sentiment engine for unstructured english.
• Technology :- Backend :- Java, Cassandra, ElasticSearch, Spring, Hibernate, Tomcat, AWS, Cloudfront, Cloudinary ( image storage), Aersopike( caching )
• Title: Distributed State Coordination System / Rule Engine
• Responsibilities:-
• Contributed in building scalable system which interacts with other Snapdeal Services OMS / RMS /POMS / Shipping and takes action based on change of states
• Built Rule Engine using Drools and exposed it as service which is used Snapdeal wide. Was solely responsible for this.
• Used Activiti as Workflow Engine to find state of order and present the lifecycle of order to end user.
• Single handedly developed Correlation Service which is responsibly to maintain correlations between different component for an order -> OMS / Shipping in DSM
• Technology :- Frontend :- Angular JS / Jquery / HTML,Tomcat
• Backend :- Java, Drools, Spring, Hibernate, Mysql, Activiti, Drools, ElasticSearch, Aerospike
• Title: Refund / Replacement / RTO
• Responsibilities:-
• Help build Post Order Management System(POMS) which catered to quick customer-friendly replacement / refund of millions of orders.

Apr 2014 – May 2015 · 1 yr 1 mo

• Title: Social Ranking / Social Relevance Engine
• Period/Size: Apr’14 – Present
• Role: SDE2
• Responsibilities:
• Played the role of Product Manager in this project. Met with business team initially and came up with requirement document
• Built Scalable backend Social engine which calculated social –(YouTube/Twitter/Tumblr/Facebook) trend ranks for TV shows and overall social rank
• Built Scalable Relevance engine to ingest relevant content from various social agents –(YouTube/Twitter/Tumblr/Facebook) for various shows
• Set up Rate Limiting agents /Oauth agents for various social agents
• Set up distributed persistence mechanism ->Highly available ,Fault Tolerent cluster of Solr Server -> Solr Cloud
• Took care of High level design changes including setting up service on different machines, load balancing it, setting up SOLR cloud, multi-threading of various social agents
• Took care of LLD(Low level design ) changes. Coded in TDD(Test driven development) approach.
• Technology :- Frontend :- Angular JS / Jquery / HTML,Tomcat
• Backend :- Java, Jetty Server, ,Mysql ,Solr Cloud,Maven
• Intermediate Layer :- Rest Layer (Jackson-Jersey)
• Alerting :- AWS Cloud Watch

Mar 2013 – Apr 2014 · 1 yr 1 mo

• Title: Catalog A/B Experimentation
• Period/Size: Jun’ 13– Jan’14
• Role: SDE2
• Responsibilities:
• Solely accountable for end-to-end product development from requirement collection, designing, coding, testing, performance testing, delivery and debugging
• Played the role of Product Manager in this project. Met with business team initially and came up with requirement document
• Major changes were done in various applications to support A/B.
• Various capabilities like Product Page A/B, Image A/B, Title A/B, Catalog Attribute A/B were enabled
• Was responsible for various changes in SOA architecture to deliver A/B.
• Took care of High level design changes including setting up service, load balancing it , distributed cache support , persistence support , performance testing to support A/B
• Took care of LLD(Low level design ) changes. A/B was coded in TDD(Test driven development) approach.
• Technology :- Frontend :- Groovy Grails , Amazon Web services
• Backend :- Java, Jetty , Membase ,Mysql ,Solr
• Plugged in CI/Sonar for Quality Testing
• Title: Thick Category client
• Period/Size: Mar’13-Jul’13
• Role: SDE2
• Responsibilities:
• Solely accountable for end-to-end product development from requirement collection, designing, coding, testing, performance testing, delivery and debugging.
• Was responsible for abstracting out category related code which involved major refactoring
• Set up Rest based application (SOA), which was center place for Category related changes.
• Took care of HLD including performance testing, load balancing and moving in-memory cache to distributed cache store.

Jan 2011 – Jan 2013 · 2 yrs

• Title: Bundle /Combos
• Period/Size: Jul’12-Jan’13
• Role: SDE1
• Responsibilities:
• Independently implemented bundle feature from CMS end.
• It involved major changes in matcher, merge, itemization, relationship, views modules for products to be bundled.
• Technology :- Frontend :- Groovy Grails , Amazon Web services
• Backend :- Java, Jetty , Membase ,Mysql ,Solr
• Plugged in CI/Sonar for Quality Testing
• Title: ACL (Access Control)
• Period/Size: Jan’12 – Jun’12
• Role: SDE1
• Responsibilities:
• Solely refactored the console code and moved it out to another application
• Set up ACL framework which has capability for Uri level, Category level, Supplier level role based access control with hierarchy support
• Technology :- Frontend :- Groovy Grails , Amazon Web services
• Backend :- Java, Jetty , Membase ,Mysql ,Solr
• Plugged in CI/Sonar for Quality Testing