Sean Usher Email and Phone Number

Software engineer on the Microsoft O365 Customer Fabric Platform team. - Deploying and maintaining Cassandra clusters for Office 365 in Azure on VMs running Ubuntu 14.04. - Performance tuning Cassandra and Apache Spark. - Providing guidance on Cassandra data modelling and Spark job development. - Ensuring our clusters meet the O365 security and compliance requirements. - Consulting with other teams in Microsoft who are trying to onboard to their own Cassandra clusters, helping them to avoid common pitfalls and teaching them how to run Cassandra on Azure.Previously focused on:Designed and developed a high-performance, scalable, cloud-based (Windows Azure) customer-scenario monitoring system written in C# leveraging TPL and Sql Azure. Scaled out to run millions of synthetic transactions per minutes. Designed and implemented the first version of the Exchange datacenter optics portal to view the customer-perceived availability of the hosted Exchange service.Received a Microsoft Gold Star Award in 2011Developed a sharding layer on top of Redis to store O365 per-user and per-tenant metrics to track tenant availability and user experience. Data was stored on multiple pivots such error type, tenant size, user's client, etc...

Working on build systems and tools integrations as well as IPv4 to IPv6 conversion for the Avaya's AES product. Also ported an in-house C/C++ unit testing framework from Windows to Linux.

Supported Faculty and Staff technology for the University of Colorado Leeds School of Business

Create a Universal Scholarship Application for the Leeds School of Business students. Allowed each student to fill out a single form to apply to all offered scholarships.