Robert Appleby

Overall responsibility for the secure, highly available operation of business-critical IT infrastructure and network topology in a regulated financial and KRITIS environment (BaFin, DORA). Key Highlights & Milestones: Virtualization & Efficiency: Sole responsibility for migrating the entire server landscape from VMware to Proxmox VE (Debian underlay), eliminating vendor lock-in and achieving annual licensing cost savings. Central Management Zone: Established an isolated network segment for administration

Responsibility for the implementation, coordination, and secure operation of complex IT solutions and security architectures at a leading European online broker under strict regulatory requirements (BaFin). Key Highlights & Milestones: Privileged Access Management (PAM): Coordination, technical implementation, and support of the BeyondTrust PAM solution to secure privileged account structures and harden the system landscape. Resolved complex incidents and continuously optimized the technical design. Auto

Deep system administration for UNIX (IBM AIX on Power Systems) and Linux (SUSE, Red Hat) as well as technical project leadership for complex infrastructure transitions and IT transformations within the utility sector (RWE, Innogy, E.ON). Key Highlights & Milestones: L3 System Administration & Cluster Systems: Responsibility for the highly available operation, administration, and troubleshooting of IBM AIX/Power Systems, PowerVM LPARs, and complex HACMP/PowerHA cluster systems. L3 Support & Root Cause Ana

Overall responsibility for the highly available operation, administration, and continuous performance optimization of the company-wide IBM AIX on Power Systems infrastructure in a retail tech environment. Key Highlights & Milestones: Network Modernization: Conception and implementation of highly available network designs using Etherchannel and Shared Ethernet Adapter (SEA) to optimize bandwidth and redundancies. Platform Evolution & LPM: Reduction of NIM servers/HMCs as well as the introduction of Live P

Overall responsibility for AIX system administration and technical project leadership for international service transitions and data center migrations for the RWE Group and nPower (UK). Key Highlights & Milestones: L3 System Administration: Operation, installation, hardening, and troubleshooting of business-critical IBM AIX systems on Power hardware, as well as PowerHA/HACMP cluster administration and KSH scripting. Service Transition UK (ATLAS): Project Lead (Germany) for the transition of nPower servic

Managed and optimized large-scale, high-availability IBM AIX and HACMP/PowerHA cluster environments for a major financial services provider (Finanzinformatik Münster) under strict banking SLA standards. Key Highlights & Milestones: HA Cluster Administration: Operated and maintained a massive high-availability landscape consisting of approximately 360 HACMP 2-node clusters (720 LPARs) utilizing IBM PowerVM, PowerHA, and PPRC data replication. Server & Storage Migrations: Technical lead for system consolida

Responsible for planning, installing, and maintaining complex IBM AIX systems and high-availability enterprise architectures under strict security (SOX) and SLA requirements for key accounts (including financial institutions and public authorities). Key Highlights & Milestones: System Administration & Engineering: Planned, sized, and installed new IBM AIX systems, administered HACMP/PowerHA clusters, and developed automation scripts using Perl and KSH to optimize operational efficiency. IT Security & SOX

Early career entry into highly secure, regulated banking IT environments. Responsible for 24/7 mainframe operations and Tivoli infrastructure monitoring for the Sparkassen financial group (with central institutional interfaces to major financial entities like WestLB). Key Highlights & Operational Scope: Mainframe Operations: Managed critical batch processing, Job Control Language (JCL) modifications, system cleanups, and overall queue controlling. Transaction & Database Control: Monitored and managed tra

telefonischer Support für JetDirect Produkte in Englisch und Deutsch, testen von Hardware die als defekt eingeschickt wurde