Application Hosting Engineer

Responsibilities include platform patching, performance tuning, certificate management, troubleshooting, and leveraging automation and observability to reduce operational toil. Administer IIS web farms hosting enterprise .NET applications across Windows Server platforms. Configure websites, application pools, bindings, authentication, authorization, and access controls. Apply standardized IIS configuration templates for security and operational consistency. Automate IIS administration using PowerShell scripts and Ansible playbooks. Manage SSL/TLS certificates and support automated certificate renewal solutions. Analyze IIS and application logs to identify and resolve performance and availability issues. Coordinate OS-level patching and platform upgrades with Windows Server engineering teams. Monitor environments using OpsView and vRealize Log Insight dashboards. Support application onboarding, deployments, and operational troubleshooting. Participate in 24x7 operational support and incident response rotations. Administer Oracle WebLogic domains and clusters across multiple environments (Production and Non-Production). Administer IBM WebSphere Application Server (ND/Base) and IBM Liberty environments across multiple data centers. Install, configure, patch, and upgrade WebLogic Server and JDK with minimal or zero downtime. Manage cells, nodes, clusters, server instances, and runtime configurations. Manage domains, managed servers, Node Manager, clusters, JDBC data sources, and JMS resources. Automate installation, configuration, and patching using Ansible and WLST scripting. Perform JVM performance tuning including heap sizing, garbage collection analysis, and thread/heap dump analysis. Troubleshoot production incidents related to memory, CPU, stuck threads, connectivity, and deployments. Implement security controls including TLS, certificate lifecycle management, keystores, and truststores. Configure and maintain monitoring using Log Insight, APM, OPSView, Prometheus, and Grafana. Participate in 24x7 on-call rotation and contribute to incident management and root cause analysis.