Associate at walmart labs

Worked as a consultant at Apple Inc via Exilant Technologies.

Performed following roles and responsibilities while working as Consultant at Apple.

• Developed APIs to invoke distributed Cache.

• Wrote Security filter to authenticate Kerberos, SSO, Opaque, SpNego and Web Cookie tokens.

• Wrote the authorization filter using the OAuth 2.0 framework.

• Wrote CORS filter for cross-origin communication.

• Did data modeling for problems, counts and reporting API

• Did integration of Apache Solr enterprise search platform to return counts for bug under each product and state (Open, Close, Duplicate).

• Implemented bulk load and sync module to load data from Oracle DB to Cassandra and from Cassandra to Apache Solr document store using Kafka as a message broker which extracts and loads about 12 millions of records.

• Wrote RESTful APIs for CURD operations for Problems and APIs to (upload, download, file list, metadata) to use Amazon S3 (Pie) object storage and to migrate old API code to use Java 1.8, Jetty, Spring (Core, Data JPA, Data Cassandra, Data REST, Security, JDBC, Boot)

• Wrote test suit for Gatling using Scala for performance testing of APIs.

• Wrote JUnit test cases using Mockito.

• Wrote RESTful APIs for (Problem, labels, components) to using Cassandra

• Wrote RESTful APIs for (upload, download, file list, metadata) to use Geneva and pie object storage.

• Built RESTful APIs using Cassandra as a database and Apache Solr as a document store.

• Wrote micro-services for problem API, product API, reporting APIs and attachment services.

• Wrote RESTful APIs for search functionalities.

• Implemented bulk load and sync module to load data from Oracle DB to Cassandra Web Service endpoint and from Cassandra Web Service endpoint to Apache Solr using Kafka as a message broker which extracts and loads about 8 millions of records in less than two hours.

• Built RESTful APIs using Cassandra Web-Service endpoint as a database and Apache Solr as a document store.

Worked on Apple projects on behalf of Exilant from offshore location Bangalore. Played following role as Software developer

• Wrote Security interceptor to authenticate Kerberos, Opaque and Web Cookie tokens.

• Wrote restful web service to check update of new version of software, upload, download of software from application server

• Wrote restful web services to check update of new version of software, upload, download of software from application server

• Wrote demon utility which runs in the background. This utility reads data from JMS queue and dumps data to reporting tables.

• Wrote web-based reporting tool using JQuery, angular, JavaScript. This reporting tool is used by Apple Application Owners to generate report app number of download, success, failure of download, the reason for failure.

• Performed logical database design, entity-relationship modeling, and mapping relationships.

• Identified each module and their components, designed user interfaces, and process flow.

• Coded and tested high-level components, provided coding standards, mentored and assisted other developers to ensure quality, scalability, and extensibility.

• Worked closely with software testing team for bug tracking, issue resolution, enhancement requests implementation and facilitating UAT testing and Production implementation.

• Wrote APIs for role product mapping and skill product mapping portlets.

• Performed logical database design, entity-relationship modeling, and mapping relationships.

• Identified each module and their components, designed user interfaces, and process flow.

• Wrote APIs to search role, product, and skills in role-product mapping, skill-product mapping, and role quick links.

• Wrote PL/SQL stored procedures, functions, and queries for fetching data from database.

• Worked closely with software testing team for bug tracking, issue resolution, enhancement requests implementation and facilitating UAT testing and Production implementation.