Benjamin Sebastian Email & Phone Number

Indianapolis, In

Worked on a team to design and implement a solution to seamlessly integrate WebRTC functionality from the PureCloud cloud platform into the Interaction Center on-premises telephony subsystem. Utilized the AngularJS framework to route Interaction Center WebRTC call requests to PureCloud microservices running on the Amazon Web Services Cloud, while maintaining the call control in the Interaction Center.Designed and developed the Interaction Center Secure Token Server, a highly scalable security token service written mainly in C++, with JavaScript and C# components, to authenticate single sign-on users from the web (via HTTP requests), and desktop applications (via secure socket requests). This subsystem, using the plugin architecture, provides both the Identity Provider and Service Provider functionality as specified by the SAML standard, where the Identity Provider plugin returns claims about authenticated users, and the Service Provider plugin returns secure access tokens to the validated users.Added additional license usage tracking and reporting to the legacy C++ CaaSBilling subsystem. Wrote complex SQL queries and stored procedures to efficiently store this data in a SQL Server database.Rewrote the License Manager, a legacy subsystem, to support both assigned and concurrent user licensing models in the Interaction Center. This highly available subsystem, written in C++, utilizes STL containers to provide fast and efficient lookups of configured user licensing data, and based on that data, acquires licenses for users from the available license pools.Rewrote the legacy ClientServices subsystem to support both stationed and stationless application logins into the Interaction Center. This is another highly available subsystem that uses STL containers in C++ to maintain user sessions, and enforce the business logic of permitting logins based on the user, station and client machine that the login is initiated from.

Indianapolis, Indiana

Maintained the Status Aggregator subsystem, a realtime user status replication service that synchronizes the user’s status between the Interaction Center and other status management systems, such as Microsoft Lync and Skype.Designed, developed, and maintained the Interaction Center certificate management system in C++, using the OpenSSL library. Built various tools and implemented new handshaking protocols that securely generate and exchange certificates between the various Interaction Center applications and subsystems using shared secrets. These certificates are then used to establish secure socket connections for all internal and external Interaction Center communications. Maintained the legacy WebServices subsystem, which manages all Interaction Center web chats. This is a C++ subsystem, with JavaScript and C# client applications, that provides the functionality to chat with Interaction Center users from any browser.

Indianapolis, Indiana

Developed and maintained install programs, using InstallShield and Microsoft Windows Installer, for the various Interaction Center products and versions, across multiple servers. Created, in C++, many of the custom install functionality, such as displaying custom dialogs, making ODBC API calls to execute SQL statements on databases, and to configure web services.

Dayton, Ohio

Responsible for developing software communication tools in Microsoft Visual C++ for the PDM thickness gage measurement system. Also designed a web based application to facilitate the remote operation of the gage over the Internet, and to display the current thickness readings.