IBM Workload Scheduler (IWS) Administrator / Engineer

Job Description/ Responsibilities
• Strong experience with IBM Workload Scheduler architecture, especially Dynamic Workload Broker, V10.1+, high availability of MDMs managing Fault Tolerant Agent and Dynamic Agent architectures.
• Strong conceptual understanding of Master Domain Manager (MDM), Backup MDM (BMDM), Dynamic Workload Console (DWC), Fault Tolerant Agent (FTA), Dynamic Agent (DA).
• Strong grasp of conman CLI to monitor and control production plan, check job/job stream/resource status.
• Strong grasp of composer CLI to define, modify and extract scheduling objects.
• Strong grasp of planman CLI to control pre-production plan and GUI mirroring.
• Strong grasp of lifecycle of daily production planning process, phases of JNextPlan/FINAL.
• Proficiency in navigating the DWC web-based GUI to monitor workloads, manage user access security, and define scheduling objects.
• Experience installing IWS components, applying Fix Packs, and Interim Fixes.
• Troubleshooting with logs under TWSDATA/stdlist, adjusting trace level for netman, batchman, writer, mailman, etc.
• Strong experience with IBM WebSphere Liberty.
• Strong grasp of reading messages.log, traces.log, FFDC logs.
• Strong grasp of configuring JVM heap sizes.
• Strong grasp of configuring tracing scope, tracing levels, tracing retention, and trace strings.
• Strong experience with Red Hat Enterprise Linux 8+.
• Deep familiarity with bash/shell commands for text processing (grep, awk, sed), file manipulation, and system navigation.
• Ability to manage, start, stop, and troubleshoot SystemD services using systemctl and journalctl for IWS agents and MDM.
• Managing user accounts, groups, service accounts and deep knowledge of Linux file permissions (chmod, chown, ACL on local filesystems and NFS).
• Ability to monitor system performance using top, htop, vmstat, iostat, sar to troubleshoot bottlenecks and platform unresponsiveness.
• Understanding of Logical Volume Manager (LVM) and filesystem usage.
• Checking TCP port availability, firewall rules (firewalld/iptables), and connectivity between MDM and Dynamic Agents using netstat, ss, ping, curl, etc.
• Managing SSL/TLS certificates, private keystores, public trust stores, and working with Certificate Authority.
• Strong experience with scripting (Bash Shell, Python, etc.) for automation.
• Understanding of networking principles.
• Understanding of basic Oracle database administration, enough to troubleshoot with DBAs to prove when an issue is in Oracle.
• Understanding basic SQL to query job metadata.
• Understanding of checking database connectivity.
• Understanding of AWS cloud infrastructure.
• Experience with using secrets manager (CyberArk PPM, Hashi Corp Vault, or similar).