Michael Schad

Operation and maintenance of Oracle WebLogic, Oracle Service Bus and Oracle Database in productive system land scapes for various customers. Automation of deployments and operational tasks with Ansible, including playbooks and roles. Administration of Red Hat Linux with patch and OS update planning, as well as implementation of mainte nance windows. Setup and operation of Checkmk for system and application monitoring, with thresholds and noti fications. Ensuring load balancing with KempOS and configuring Nginx and WildFly for high-availability setups. Inci dent and change management via Jira and Confluence with audit-proof documentation.

• Shortening of release and deployment cycles through continuous Ansible automation

• Stable 24/7 operation with SLA-compliant availability through structured patch and maintenance window management

• Increased monitoring coverage and faster fault diagnosis through standardised Checkmk rules

Administration and operation of Linux servers in production-related environments, with hardening and updates. Replacement of the syslog environment and establishment of a resilient backup architecture with defined retention policies. Control and implementation of the release process with approvals, acceptances and rollback scenarios. Cre ation of operational documentation and implementation of colleague training for regular operation. Introduction and administration of Splunk for log analysis, dashboards and alerting. Configuration of Checkmk with service-based monitoring rules and alarm paths.

• Successful migration of Syslog infrastructure without productive downtimes and with improved auditability

• Significantly increased transparency in operation and fault analysis through Splunk dashboards and alerts

• Standardised releases with traceable approvals and reduced error rate

Operation of Solaris and Linux servers, including administration of Oracle WebLogic, Oracle Service Bus and IBM MQ. Application of containerised applications on OpenShift 4 with Kubernetes, Docker and registry handling. Automation of deployments, patches and operational tasks with Ansible and Puppet. Planning and implementation of updates, version changes and maintenance windows with change and release management according to ITIL. Setup of mon itoring and logging with Icinga, Nagios, Kibana, Grafana and Elastic Stack, including alarm concept. DevOps team organisation with toolchain support via Git, Jenkins, Confluence and Jira.

• Accelerated deployment and lower error rates through automated deployments and standardised pipelines

• Stabilisation of 24/7 operation through proactive patch management and defined incident handling

• Improved operational quality through complete, audit-proof documentation and reproducible runbooks