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Rollout of printers and PCs

• Effective management of external service providers to ensure smooth operations.
• Planning and implementation of a global rollout for 150,000 clients.
• Carrying out a comprehensive risk analysis, including overall risk, site-specific risks, and security risks.
• Successful consolidation of two existing ServiceNow systems to optimize service management.
• Close coordination with program management to achieve the project goals.

• Development of ETL pipelines with Talend (7/ Enterprise)
• Development/adaptation of database schema/database functions (PostgreSQL)
• Development of GIT CI pipelines

Technologies: Talend Enterprise, Git, PostgreSQL, Dbeaver, SQL, PL-SQL, Liquibase

• Complete overhaul of the ISMS according to ISO 27001
• Conducted a comprehensive gap analysis
• Reduced ISMS documentation by 30% through consolidation and process optimization
• Introduced a full PDCA cycle for continuous improvement
• Established the ISMS within the company
• Implemented the necessary processes
• Managed and conducted internal and external audits
• Developed and implemented a company-wide risk management system
• Deployed an ISMS tool including process design and training
• KRITIS compliance: Prepared and provided required evidence, liaised with regulatory authorities, planned, documented, and implemented an attack detection system (SIEM), co-led the BCMS/ITSCM implementation subproject
• NIS-2 implementation: Gap analysis, risk assessments, training for executives and staff
• Led a cybersecurity team of 3 members
• Conducted various internal and external audits, managed providers, introduced continuous improvement
• Project consulting: closely coordinated with business and system owners, launched an online shop, a mobile app, and a customer portal
• Redesigned the security architecture, reducing administrative efforts by 20%
• Implemented ITIL processes (e.g., change management)
• Revised service agreements with internal and external providers
• Developed a security awareness strategy, ran social engineering tests, introduced and monitored phishing simulations, created various awareness materials, gave presentations
• Managed a budget of one million euros

I implemented a Zero-Trust architecture for robust, military-grade maritime container mini data centers based on VMware & Tanzu to support containerized GIS workloads for ground forces. The main focus was on securing communications, workload protection, and data access in contested electronic battle environments affected by jamming, interception, signal manipulation, and constantly changing operational conditions. I designed and architected use cases so that every element of workload, identity, and system could continue to operate independently and securely even in degraded or disrupted scenarios. In parallel, I defined the enterprise and solution security architecture with LeanIX, Bizzdesign, and HOPEX as enterprise architecture, repository, and governance platforms to maintain architecture inventory, relationships, traceability, target pictures, and security governance in complex environments. For the architectural designs, I used Sparx Enterprise Architect to describe formal architecture views, interfaces, trust boundaries, and system architecture in both IT and OT environments. IriusRisk was used for threat modeling of the solution to identify architecture-driven risks, derive security requirements, and detect countermeasures and design gaps directly from the solution models. Risk and compliance management was supported with Archer. Architecture decisions, control gaps, and operational risks were translated into controlled governance and auditable compliance measures. For documentation, collaboration, and visual design, I used Confluence to maintain Architecture Decision Records, Security Blueprints, and workflows. I used Lucidchart and draw.io to create design artifacts tailored to stakeholders. I also defined OT security concepts with support from electrical and mechanical engineers in the areas of oil, vehicle onboard systems, rail, power plants, pharma, gas turbines, and nuclear technology. I created the end-to-end OT security strategy, starting with global policy, developed into standards and procedures, and finally aligned with Bell-LaPadula, Purdue Model, SABSA, TOGAF ADM, CENELEC 50701, IEC 62443, and NIST standards. In addition, I worked with engineering team leads to identify critical KBP assets and place them under protective measures that segmented SCADA, PLC, and HMI assets. I drove collaboration between Security, IT, and OT teams to create standardized workflows and use cases for the OT security solution catalog, while integrating Defense-in-Depth and Zero-Trust principles into operational environments. A key part of my work was integrating multidisciplinary engineering, security, and operations stakeholders into a unified security blueprinting strategy and ensuring that architecture, threat modeling, governance, and documentation were technically strong and operationally practical.

• Atlassian & Business expert
• Lead of 1st, 2nd and 3rd level support, process mapping, process optimization, introduction of a project standard (global user management and documentation) and development of a collaboration platform to optimize teamwork, data management, reporting, ERP transformation
• The client is a sustainability-focused chemical park and offers its employees a full service for the Atlassian product suite. In addition, the adoption of the ERP software by employees, the improvement of data quality and internal exchange or collaboration should be promoted by sharing knowledge and best practices
• Process and standards development
• Project configuration and creation of technical concepts
• Workshops with employees
• Development of scalable solutions and processes and their optimization/automation
• Coordination with department process owners and management
• Process mapping and further development
• Data migration and data mining
• Lead as Scrum Master
• Dashboard for project management with project overview / development of reporting structures

• Restructuring for product-led growth in the field of digital user-centric tech product development language learning experiences
• Scaling empowered tech product teams
• Anti-fragile software engineering

• Consulting on Agile Leadership and Lean Management
• Facilitation of workshops
• Training and coaching in Agile Leadership, Lean Management and team development

• Planning, managing, and executing IT projects in network architecture, hybrid cloud solutions, asset management/CMDB implementation, and system hardening (clients, servers, databases)
• Ensuring all projects are delivered on time, within budget, and meet quality standards
• Identifying and managing risks and proactively resolving issues
• Collaborating closely with technical and non-technical stakeholders to ensure project objectives are achieved
• Defining and tracking KPIs and progress reports for all project phases

• Enterprise and IT strategy
• Digital transformation
• Process and portfolio management
• Interim IT management

Consulting on compliance and data protection topics in the telecommunications environment.

• Supporting integration testing

• Writing and creating the cut-over script

• Conducting workshops to clarify requirements

• Gathering business requirements

• Business process modeling

• IT design

• Project planning

• Supporting migration tests

• Executing a greenfield S/4HANA conversion. A DATEV application and an AS400 are to be replaced by an S/4HANA system in a public cloud. The DATEV system runs the general ledger and accounts payable. The AS400 handles accounts receivable and business partners. The payables and receivables will be migrated to S/4HANA and the DATEV solution decommissioned.

• Data-analysis, Preparation, gathering and coordination of business requirements for retrieval of monthly- and long term (CLV – relevant) cost- and revenue-components per contract for a customer–base–grouping project (HUB–Project) for B2C-Postpaid-Controlling
• Concept and Implementation of cost- and revenue-KPIs calculation and corresponding CLV–reports (Oracle, Perl, SVN, MS SQL Server, MS Power BI, Serviceware Performance Analytics)
• Operational support of the HUB-Project – various ad-hoc reports, deployments, job-scheduling etc. (Oracle, SVN, BICSuite–Scheduler, DWSODA etc.)
• Analysis, implementation, retrieval and reporting of various physical and financial KPIs for B2P-Prepaid Business on an existing data-mart (Oracle, Perl)

• Consulting on SAP authorizations and governance
• Conducting governance consultations, iteration support and project coordination
• Developing solutions for effective control and monitoring of SAP authorizations
• Creating concepts and recommendations
• Drafting detailed concepts to improve the assignment and management of SAP authorizations
• Providing clear recommendations based on established methods and best practices
• Creating/customizing authorizations for MM including MDG/MDM as well as FI, PP including AIRC Services within SAP Finance
• Reviewing existing structures and processes
• Analyzing and evaluating current SAP authorization structures and processes
• Identifying weaknesses and developing optimization strategies
• Conducting trainings and workshops
• Planning and delivering trainings and workshops for awareness
• Sharing knowledge in SAP authorizations, including role assignment, support during iterations and consulting on role development in the pharmaceutical environment.

• Taking on project/program management roles
• Leading a project at a Microsoft partner for the global rollout of Microsoft Dynamics CRM for a global company in the automation systems/control technology sector