- AIX and Linux system administration
- High Availability clustering – PowerHA, Corosync/Pacemaker and other
- System Automation using shell scripts, Perl and Python
- IaC tools like Ansible and Terraform
- Performance monitoring using IBM Tivoli Monitoring, IBM Tivoli Netcool/Omnibus, Prometheus, Zabbix, Open NMS and others
- Backup and recovery using IBM Spectrum Protect (TSM), pgbackrest, rsync and many others
- Message queuing using RabbitMQ, Kafka, WebSphere MQ
- Installing and supporting many security products like IBM Security Directory Server, IBM Qradar, IBM Identity Manager, IBM Security Access Manager
- Databases like IBM DB2, PostgreSQL, MySQL and others
- Elasticsearch and Kibana implementation
- Cloud Architecture design and implementation
- Kubernetes and RedHat OpenShift