Windows Server Experts in Cologne

With project PRIZMA, DB will modernize its infrastructure on the one hand, and develop a fail-safe IT landscape on the other hand, which can be restored quickly and securely in case of a disaster.

• Capture current architectures of existing systems as well as methodical consulting and development of target architectures
• Deepen and maintain the building plan / target IT landscape
• Implement technical architecture concepts & architecture descriptions
• Implement migration concepts for updating and further developing the platform and information systems
• Assess submitted improvement suggestions as part of the project
• Capability management: identify capability gaps, develop target visions, and support transformation planning within the enterprise architecture.
• Create a compatibility matrix of the components in use and compare dependencies of specific versions
• Create an IT concept for extending the platform with the following topics: hardware and software requirements, security, licensing, high availability, load balancing, backup & recovery, update strategy, monitoring integration, etc.
• Coordinate with business architects as well as technical architects from the cross-functional architecture area of the PRISMA program for the topics (backup, Active Directory, monitoring, Citrix, and business applications ...)
• Status meetings and alignment of project planning with the Release Train Engineer / Project Manager
• Advise the Release Train Engineer / Project Manager in identifying project risks
• Advise the System Architect Engineers in steering the implementation of the concept
• Implement the IT concept
• Document the infrastructure

Label: MS Project, LINUX, Windows, ORACLE, Java, REST, SharePoint, Microsoft Exchange, UML, Enterprise Architect, BPMN, AZURE, AWS, V-MODEL, Micro Service, VisualStudio, SAP S/4HANA, SCRUM(SAFE), ESB (TIBCO), Python, Innovator, LeanIX (TOGAF), Ansible, Ansible Tower, Ansible Automation, ROBOT, SpringBoot

• PRISMA project
• Ansible automation
• Windows third-level support for Windows NT, Windows 2000, Windows 2013, Windows 2016, Windows 2019

• Project manager for transition and migration of IPC Trader Telephony to 3CX-based dispatcher and Cloud9-based trader telephony
• Planned and managed company-wide replacement of IPC Trader Telephony with 3CX and Cloud9 solutions
• Continuous improvement of implementation processes and development and execution of optimization measures
• Planned, coordinated and tracked delivery of IT equipment and service provision at all sites
• Led a team of IT site managers to ensure IT services were delivered on time, within budget and with required quality
• Defined project scope in coordination with all business resources
• Planned and executed software and hardware rollouts, including user support during implementation
• Communicated with key customers and service organizations and collaborated with traders, telephony architects, app owners, testers and technical IPC teams
• Conducted stakeholder analysis for creation and maintenance of change management processes
• Managed full change process: prepared change requests, defended them in change board, communicated at company and user level, and supported change implementation

• Full product responsibility from a business perspective: requirement analysis, UX design, product strategy, and go-to-market implemented without an internal dev team using fully AI-supported development (Claude Code / Anthropic)
• Technical differentiation: KRITIS-compliant air-gapped deployment (Windows/NSIS), GDT interface for PVS integration, DATEV-LODAS export for payroll
• Managed pilot operation with initial external client (Dormagen medical practice): structured requirement gathering, test support, error analysis, and release management
• Developed rollout and sales strategy for market entry in the segment of private practices and small medical centers
• Human-in-the-Loop development principle: business decision → AI implementation → manual review → approval → release – each sprint documented in Jira (TIME project), every change traceable via co-authored commits
• Product outcome: Tauri/Rust desktop app with GDT watcher, multi-tier model (Starter/Professional/Enterprise), cloud mirror on Hetzner/Traefik, complete ISMS framework based on ISO 27001 and BSI basic protection as product foundation
• Direct method validation for the test manager role: hands-on experience with quality assurance of AI-generated products from a user perspective, review gate discipline, release approval under GDPR and the EU AI Act

• Further development of the application landscape for Planing, Forecasting and Pricing

• Communication with internal stakeholders to standardize the application landscape across all companies

• Optimization of vendor management

• API and batch processing

• Creation of operating concepts

• Ensuring compliance with requirements and operating processes

• Supporting solution design as well as the implementation and further development of new applications and services

• ServiceNow

• Virtual Machines (Windows / Linux)

• M365 Products

• Azure DevOps

• Web Applications

• providing technical assistance to the sales force during sales calls
• providing pre-sales technical support
• providing technical support during first time installation of new AudioCodes products together with partner/ end-customer
• pre-sales technical interface to the channel/partner and managing of technical knowledge transfer to the partners
• giving customer presentations and hands-on product demonstrations (e.g., AudioCodes Live Cloud, Express, OVOC)
• providing product training to customers, prospects and sales during the pre-sales phase mainly AudioCodes endpoints like e.g., IP Phones, MTRs
• leading RFPs/RFI technical responses
• providing technical assistance to marketing for regional events (e.g., seminars, roadshows)
• mainly focused on AudioCodes IP Phones (Generic SIP/Native Teams), AudioCodes MTRs, AudioCodes Collaboration Bars, Jabra endpoints, Sennheiser/Epos endpoints
• management of endpoints like above via AudioCodes One Voice Operation Center and maintaining of this environment for customer workshops/ calls
• management of AudioCodes IP Phones via Microsoft Endpoint Manager/ Intune and maintaining of this environment for customer workshops/ calls
• building of automated cloud workflows (Power Automate) for internal AudioCodes DACH processes
• trusted advisor for Microsoft products which interfere with AudioCodes products for DACH region

• Freelance work as a CMS expert

• In the citizens' and business customer portal of the Customs Administration, airlines submit applications for departures and landings every month

• These applications are forwarded to the caseworkers via SOAP web service and, after review and processing, any queries or notifications are returned via SOAP web service

• PL/SQL programming of SOAP webservices client requests for HTTP/XML message exchange between the BuG portal and the caseworkers

• New creation and change requests for Forms and Reports 12 modules

• Forms applications start and read SOAP webservice requests via PL/SQL packages, process them and send Reports 12 documents to the airlines

• Developing and implementing IT architectures for business-critical applications, BCM/ITSCM, SAP, BTP and S/4HANA, Azure, interfaces and IT infrastructure according to Uniper security guidelines and compliance policies

• IT cloud infrastructure management: Requirements management and SLA definition for critical SAP and non-SAP applications and infrastructures based on the Key Production Environment algorithm; creating a conceptual target architecture; creating agile project plans for migration; risk management and vulnerability analysis; developing training content and e-learnings; establishing and optimizing risk management processes; creating action catalogs, architectures and ITSCM/emergency plans; identifying and managing internal and external partners

• Developing BCM/ITSCM concepts and IT infrastructure architectures for business-critical applications according to Azure Cloud, SAP BTP and Uniper governance frameworks; documenting and implementing ITSCM/emergency plans in line with disaster recovery patterns; creating training materials and coordinating training sessions; testing, simulating and optimizing BCM/ITSCM plans and IT architectures; ongoing training of management and staff on IT architectures, operating models, SAP BTP as well as BCM and emergency plans

• Technical lead of the SAP services team: Managing and coordinating external vendors, service owners and application managers; developing and implementing ITSM processes (incident, problem, change, SLM, IT security, provider management, ITSCM, asset and configuration management); training internal and external service providers and service managers; optimizing IT service contracts and OLAs; updating the service catalog; communicating and escalating issues; defining responsibilities and monitoring SLA criteria; conducting root cause analysis; partly acting as release manager for SAP ERP releases

• Migration: Requirements management, budget and financial planning; risk management; defining and implementing transformation and migration plans; weekly reporting to Uniper vice presidents and senior management; maintaining project plans and backlogs in Jira and Azure DevOps; managing up to 50 internal and external stakeholders; workshops and meetings; quality assurance: defining quality gateways and monitoring

• Test management: Creating and documenting test plans; evaluating test risks; identifying stakeholders for test plans; documenting test scenarios; defining error categories and quality gateways; coordinating and executing tests

• Implementing secure cloud configurations with Azure Private Link, Network Security Groups, Microsoft Defender for Cloud, and Azure Regulatory Compliance for NIST 800-53, PCI DSS, and HIPAA/HITRUST, resulting in an 88% reduction in security incidents over the same period.
• Troubleshooting and supporting Microsoft Azure services, including Microsoft Sentinel (SIEM), Virtual Machines, Azure Monitor, and Azure Active Directory.
• Developing KQL queries to support the Log Analytics workspace and Microsoft Sentinel, resulting in 1 new SIEM dashboard and 4 workbooks.