Rohan Sahgal Email & Phone Number

Cupertino, California, Us

New York, Ny, Us

ClassPass aggregates fitness and wellness classes that users book as part of their monthly subscription.- Architected and built a distributed rule based subsystem for flexible pricing control- Setup a complex data pipeline used to onboard studio partners, that spans external systems used by marketing (Hubspot) and sales (Salesforce).- Held a rotating role to increase collaboration, developer productivity and unifying technology use across teams

New York, Ny, Us

- Designed and implemented a scalable ledger that is used for tracking usage of an internal virtual currency called 'credits' and is core to the classpass subscription.- Designed and implemented a solution for users to purchase additions to their monthly plans.- Created a Java microservice template built on top of dropwizard which integrates with postgres as its database and swagger for API docs used as a starting point for all our microservices.

Trust is an app first video reference platform. As the only technical founder I developed an initial prototype Android app and the supporting backend deployed on AWS- Created an oauth2 based authentication system using Spring Boot and Spring Security- Integrated with Twilio to send out SMS messages- Integrated Amazon SQS in the system to distribute processing- Designed and developed a method to upload videos to S3, normalize them using Elastic Transcoder and stream them using cloudfront over HLS■ Deployed the spring boot based backend talking to MySQL to Elastic Beanstalk to allow easy monitoring and auto scaling.■ Developed an Android app using Retrofit, Picasso, ButterKnife, Dagger 2, etc

Cupertino, California, Us

Worked on Apple News- Helped design and develop the ETL pipeline to extract news articles from RSS feeds- Integrated an internal Kafka-esque queue into this processing- Created infrastructure to integrate with an internal S3-like object store- Designed and developed an initial front end application using emberjs to visualize data about news articles in the system■ Designed and developed various solutions to get different data into our Hadoop cluster to be made available for performing data science

Mountain View, Ca, Us

Concept.io developed Swell, a mobile app that streamed personalized audio news and information. It was Pandora for Podcasts.- Designed and developed an Identity system for storing profile information of users using Spring Security, Grails and Amazon RDS- Integrated Amazon SQS into the backend system to provide more flexibility in processing- Integrated an email solution using Mailchimp to send out transactional emails- Worked with deployments to Amazon AWS- Developed the bells and whistles of the Beta Android app such as the notifications and the lock screen widgetsConcept.io was acquired by Apple

Mumbai, Maharashtra, In

Zaya is a disruptive educational non-profit startup that combines an intelligent learning management system with innovative blended learning strategies for offline use. The product brings world class online education resources to the mostly offline developing world.- Interacted with the different verticals in the organization to design and architect a new version of the technology solution from scratch- Built and lead a small team of engineers to implement the platform at a war footing- Designed the platform as a single page web application communicating using JSON over xhr with the backend apis- Used AngularJS as the Javascript framework at the frontend and JQuery under the covers- Styled the Twitter Bootstrap based application using LESS css- Implemented the backend using Java and the Play Framework- Designed and implemented the persistence schema using PostGresSQL as the database and Ebean as the ORM- Deployed a version of the application to the Amazon EC2 cloud to be used for testing and backup- Designed an innovative synchronization mechanism using bittorrent- The previous iteration for Zaya was called NomadEDU, it was designed using a LAMP stack running Django and MySQL to host a web application, helped by cleaning out a number of bugs, improving the UI and working on a number of incremental enhancements such as user profiles

San Jose, Ca, Us

Worked on the Cisco WebEx Social product (formerly Cisco Quad) that integrates Cisco’s various collaboration technologies like VOIP, Jabber IM, Webex meetings into one portal. Being one of the founding developers of the team, helped take the product from initial concept to the third generation product now in production at several large enterprises.- Followed an agile process to plan, design, and implement several incremental features- Owned the integration of this product with a video offering from Cisco using their XML based apis, leading a team to design and implement everything from the persistence layer to the DOJO based frontend- Worked on migrating the persistence of various features such as Activity Streams from Oracle to the NoSQL MongoDB, designing schemas, shard keys and indexes to improve performance and scalabity- Architected and implemented solutions for data recovery from the relational and NoSQL stores for the cloud deployments- Designed and implemented a scalable unified content share service using MongoDB- Designed and implemented the integration of the Chat UI with Microsoft Office Communications services using their javascript api

San Jose, Ca, Us

Worked on an internal framework used within Cisco called the Web Framework that exposed web services from legacy products using SOAP based on Apache Axis and REST based on Glassfish Jersey- Implemented various samples to help the adoption of the framework within Cisco- Provided hands on support to the different adopting teams- Designed and implemented the integration of Direct Web Remoting (DWR)

San Jose, Ca, Us

Contributed to a product called Cisco Application Oriented Network (AON) machine that was to provide a java api to interact with networking features- Participated in the very initial discussion related to the product features- Worked on the architecture under the guidance of senior architects and managers- Simulated a threading model for handling multiple network applications

Masters, Computer Science

Bachelor Of Engineering, Computers