Java, Performance Tuning, Load Balancing, Ldap, Web Servers, Middleware, Clustering, Application Servers, Sso, Windchill Type and Attribute Management, Windchill REST Services, PTC Windchill, Enterprise integration technologies, AD authentication and authorization, OData REST APIs, Caching, Database concepts and SQL, Troubleshooting, object modeling, Product Part BOM Document Change and Configuration Management, Workflow lifecycle team organization domain and access-control configuration, CAD integrations