Privileged Access Management Experts in Germany

Business analysis / requirements engineering for the introduction of a central authorization platform:

• Analysis of existing requirements for the use of IGA solutions (NetIQ, MidPoint) in an existing IAM cluster
• Capturing requirements as epics and user stories (JIRA) to provide a comprehensive description of the use of an IGA solution for central access control across connected platforms and applications.
• Functional solution descriptions (Confluence) for various lifecycle processes, such as Identity Lifecycle (ILC), Role Lifecycle (RLC), Structure Lifecycle (SLC), and Application Lifecycle
• RBAC: Design of a role model in the IGA solution to automate access provisioning as much as possible, capturing application and business roles
• Approach for onboarding applications to the IGA tool, integrating Keycloak (ID Provider).
• Functions and processes for recertifying entitlement objects and roles, and for assigning / removing them from personalized identities.
• Functions and processes for audit-proof documentation and reporting of managed data and processes in the IGA / IAM environment.
• Planning, execution, and documentation of QA / testing for the 1st implementation phase of the MidPoint IGA solution in the IAM cluster.
• Planning a roadmap for the step-by-step testing and introduction of the IGA solution.

• PMO Lead Security Clearance 2 (SÜ2) verified
• Reporting to the GMN sub-program management
• System maintenance 25+
• Functional management and coordination of the Jira setup
• Preparation of decision papers (e.g. project planning, governance model, communication plans, controlling models, roles and responsibilities matrices)
• Development of program-wide knowledge management using Confluence, creation of Jira concept
• Development of an access concept for all project tools
• Analysis of existing processes, identification of improvement potential, and design of solutions to increase efficiency and effectiveness
• Development of a concept for introducing automation approaches into existing tools
• Creation of intranet articles for project marketing
• Responsible for project governance through reporting and resource planning in the sub-program
• Agile development of the project methodology
• Gathering customer requirements (Requirements Engineering)
• Preparation and support of contract negotiations (7-year term, 500+ million budget)

Planning and updating the entire environment to Windows Server 2022 and 2025

• Hardening of DCs and servers, setup of event log forwarding
• Migration of all existing Windows 2019 servers (including Active Directory DCs, DNS and CA) to Windows Server 2022 and 2025
• Automation of security patches for the Hyper-V clusters via PowerShell (CAU)
• Network administration
• Continuous operation and support of the MS Hyper-V environments

Establishment of Compliance Department & DORA Operationalization

• Establishment of a complete compliance organization in accordance with DORA
• Development and operationalization of the SfO
• Use of AI agents for automation:
• Evaluation of due diligence questionnaires including risk classification
• AI-supported contract analysis (DORA/MaRisk compliance)
• Monitoring of external data sources (cyber incidents, newsfeeds)
• Establishment of a decentralized risk and action register
• Preparation of GAP analyses and derivation of measures
• Establishment and maintenance of the Outsourcing Information Register
• Use of proprietary TPRM frameworks, checklists and process models

Establishment of Compliance Department & DORA Operationalization

• Establishment of a complete compliance organization in accordance with DORA
• Development and operationalization of the SfO
• Use of AI agents for automation:
• Evaluation of due diligence questionnaires including risk classification
• AI-supported contract analysis (DORA/MaRisk compliance)
• Monitoring of external data sources (cyber incidents, newsfeeds)
• Establishment of a decentralized risk and action register
• Preparation of GAP analyses and derivation of measures
• Establishment and maintenance of the Outsourcing Information Register
• Use of proprietary TPRM frameworks, checklists and process models
• Project controlling - presentation and structured measurement of project goals achieved as part of management reporting.
• Overall responsibility for establishing a Compliance, Governance and Risk organization
• Establishment of an integrated GRC model and executive reporting for the Management Board.

• Conceptual consulting for securing business processes
• Consulting for planning and implementing IT and IT security projects
• Security and policy checks, process optimization, contingency planning
• Project management and interim management in IT infrastructure and information security

Overview of relevant projects:

• 2025: Consulting on a DLP concept and for Digid GmbH.
• 2025: Consulting for a customer after a cybersecurity attack in which the IT infrastructure was compromised and the attacker gained M365 tenant admin rights. Investigation and recovery of the IT infrastructure. Preparation of recommendations for increasing IT security.
• 2025: Continuation of the projects listed below for Thyssenkrupp Marine Systems and Norddeutsche Landesbank.
• 2024: Preparation of a DNS concept including consulting on DNS strategy and technology, DNS design, DNS security, load balancing, reverse lookup zones and automation. Preparation of a DHCP concept including consulting on DHCP design, the central DHCP management system and automation. Consulting on the operation of the products mentioned, operating processes, and adapting the IT documentation and IT service description for Thyssenkrupp Marine Systems.
• 2024: Analysis and assessment of the network and security infrastructure established by the providers with regard to the overall architecture, consisting of the design and components. Development of proposed solutions to improve current operations, maximize performance and security, and reduce complexity. Presentation of the results, their causes and possible solutions to C-level management, including the required decision templates. Development of a SASE concept based on a Zero Trust architecture for Norddeutsche Landesbank.
• 2024: Continuation of the projects listed below for Atlas GmbH and Deutsche Vermögensberatung AG.
• 2023: Consulting on resolving findings from an IT security assessment of the IT infrastructure, conducting proof-of-concepts for DDoS protection and Digital Experience Monitoring (DEM) with Zscaler (ZIA, ZPA & ZDX), creating a new security architecture based on Zero Trust, redesigning a Cisco ISE implementation and designing a DNS security solution to protect guests and financial advisors for Atlas GmbH / Deutsche Vermögensberatung AG.
• 2023: Continuation of the projects listed below for Digid GmbH, Vaillant Group GmbH (until 09/2023), Bundesanstalt für Geowissenschaften und Rohstoffe (until 05/2023) and Union Investment IT-Services GmbH (until 07/2023).
• 2022: Preparation and review of white papers for infrastructure and security architectures, planning new network infrastructures for Deutsches Luft- und Raumfahrtzentrum.
• 2022: Development of a concept for the technical and process-related modernization of a disaster recovery plan for United Nations Volunteers.
• 2022: Development of a concept for moving measurement data to a cloud environment, introducing Network Access Control and conducting an awareness training session for Digid GmbH.
• 2022: Development of a network segmentation concept for DZ Hyp AG.
• 2022: Development of a network segmentation concept for Bundesagentur für Arbeit.
• 2021: Development of a new load balancer architecture for Bundeswehr Fuhrparkservices GmbH.
• 2021: Vulnerability scan and penetration test of a web frontend, including evaluation and preparation of recommendations for remediation, taking risk and probability of occurrence into account, for customer ifi GmbH.
• 2021: Consulting, concept development and sub-project management for introducing a Network Access Control solution (certificate authentication and MAC address bypass) and macro-segmentation (area and zone concept based on dynamic assignment of endpoints) in office and production IT for customer Vaillant Group GmbH.
• 2021: Upgrade and optimization of the LAN and WLAN infrastructure for customer United Nations Volunteers.
• 2021: Development of a target concept for modernizing the IT security infrastructure consisting of the DMZ (Cisco switches, firewalls, WSA, ESA, SMA), internet access, admin and management networks and wireless LAN, including support during implementation, for Bundesanstalt für Geowissenschaften und Rohstoffe.
• 2021: Creation of a micro-segmentation concept based on Cisco DNA and SGT and Zero Trust for Union Investment IT-Services GmbH.
• 2021: Review and update of ISMS Level-3 policies and preparation of process instructions for customer Software AG.
• 2021: Project management for the global Tec-Refresh project Meraki WLAN 2.0, coordination of outsourcing the LAN/WLAN infrastructure to a managed service provider and preparation of a WLAN concept for automated guided vehicles for customer Heraeus Infosystems GmbH.
• 2021: Project management and technical support for the “Transition of SIEM/SOC Services” project of a customer into a shared environment and assumption of the interim role of Head of Security Operations at customer Datagroup SE.
• 2021: Workshop for a future implementation of Mobile Device Management at customer Allgeier Experts Go GmbH.
• 2021: Sub-project management for introducing a rule management tool for firewalls and recertifying NAC endpoints based on 802.1x and MAB at customer Union Investment IT-Services GmbH.
• 2020: Development of a network segmentation concept for two data centers based on Cisco and VMware for Aareon AG.
• Recording and analysis of the current network architecture, including project initiation.
• Development of a concept for micro-segmentation in the data center and access network.
• 2020: Infrastructure and security architecture audit for customer Stuttgarter Versicherung AG.
• Analysis of the IT infrastructure and IT security architecture with regard to the configuration of network and security components. Additional review of contracts, process descriptions and manuals for completeness. Development of recommendations to improve the stability and operation of the infrastructure. Preparation of a network segmentation concept and project management for implementing the measures from the analysis project.
• 2020: Consulting on setting up an ISMS-Light for customer Josera foodforplanet GmbH & Co. KG.
• 2020: Security architecture consulting for customer Datagroup SE.
• Development of a future IT infrastructure and IT security architecture.
• Analysis of the current IT architecture of all 23 companies.
• Recommendations for optimizing the IT infrastructure and preparation of a comparison between a classic perimeter security concept and the Zero Trust model.
• Preparation of a security zone concept.
• Preparation of an IT infrastructure architecture in coordination with all companies.
• 2018 - 2019: Stream Lead in the Cyber Security program of Deutsche Lufthansa AG.
• Responsible for designing and implementing 9 projects in IT security infrastructure and user access management, as well as managing project managers and experts.
• Project area: Network Segmentation and Access Control.
• Project area: Security Architecture.
• Project area: Privileged, Identity & Access Management.
• Project area: Simplify User Authentication (MFA).
• Project area: Mobile & Endpoint Security.
• Project area: OT Security.
• Project area: E-enabled Aircraft.
• 2018: Security architecture consulting for customer Deutsche Lufthansa AG.
• Project management for the development, evaluation and management of the company-wide information security architecture.
• Development of a security strategy and roadmap to align the security architecture with the Zero Trust model.
• Evaluation of security solutions, services and tools available on the market.
• Definition of requirements for RfPs and evaluation of offers.
• Development, maintenance and monitoring of security architecture artifacts.
• Conducting security assessments of existing and new IT systems and security services.
• 2018: ISMS consulting for customer GLS IT Services GmbH.
• Consulting on introducing and initially operating an ISMS based on ISO27001.
• Auditing the IT environments of the GLS country companies.
• Analysis and assessment of IT security risks and derivation of required measures.
• Development of proposed solutions in coordination with the relevant stakeholders.
• Project management and transition of the ISMS to later operations.
• 2016 - 2018: Security Pre-Sales Consultant for customer Cisco Systems GmbH.
• Nationwide strategic and conceptual consulting for major enterprise customers and financial and insurance customers on Cisco and Meraki security products and services such as Firepower, WSA, ESA, Stealthwatch and ISE.
• 2017 - 2018: Design and implementation of an ISMS for customer Verivox GmbH.
• Conducting various BIAs and GAP analyses.
• Preparation of security policies based on ISO 2700x.
• Assumption of the interim role of Information Security Officer.
• 2017: Preparation of a contingency concept for VPV Lebensversicherungs-AG.
• Review and update of the IT contingency manual.
• 2016: Consulting and project management for the design of cloud and hosting services for customer Vodafone Group Services GmbH.
• Analysis and optimization of the sell-build-run process.
• Preparation of detailed-level designs for cloud products.

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

• Preparation of a complete IT security concept (ISiKo)
• Implementation of BSI / NATO / national security requirements
• Risk analysis, documentation, audit preparation
• Consulting and management of development teams in Cybersecurity Recovery and Resilience
• Genua firewalls, VPN, VS-NfD migration from Checkpoint and PaloAlto firewalls
• Administration of log sources: firewall traffic, ALG (SIP calls), ATP, DLP
• System administration – servers, AD, clients (according to BSI)
• Stakeholder communication (C-level / government agencies)

• Integration of Post-Quantum Cryptography (PQC) algorithms into high level protocols.
• Security of implementations of Post-Quantum Cryptography algorithms.
• Transition to Post-Quantum public key infrastructures.
• Security evaluations of Post-Quantum Cryptography (PQC) primitives.
• Drone Cybersecurity
• Satellite Cybersecurity
• AI Security

• Operation and further development of a SASE infrastructure based on Netskope

Enterprise & Cloud Security Architect supporting the modernization of the SDK application landscape as part of the KVNeo transformation program. Responsible for enterprise architecture, cloud governance, security architecture, and the definition of technical standards for strategic business applications.

Key responsibilities include architecture governance, target architecture development, cloud and integration architecture, security-by-design, and the translation of regulatory requirements into sustainable technical solutions across multiple business domains.

Responsibilities and achievements

• Designed and reviewed target architectures for strategic insurance applications and enterprise services.
• Developed architecture documentation based on Arc42 and Architecture Decision Records (ADRs).
• Defined governance models, architecture principles, and technical guidelines for cross-domain initiatives.
• Supported the modernization of archive, document management, and output management platforms.
• Designed integration architectures using REST APIs and event-driven communication patterns.
• Led architecture discussions with enterprise architects, development teams, product owners, and business stakeholders.
• Translated regulatory requirements such as DORA and ISO/IEC 27001 into practical architecture decisions.
• Designed security concepts covering Identity & Access Management, authorization, authentication, auditability, and logging.
• Supported SIEM integration, security monitoring, and enterprise logging concepts.
• Evaluated technical risks, technical debt, and architecture improvements while providing decision papers for architecture boards.
• Established architecture governance processes and contributed to enterprise-wide transformation initiatives.
• Supported cloud governance activities and the definition of secure cloud architecture standards.
• Facilitated architecture workshops and coordinated cross-functional stakeholders across business and IT.

Technologies & Methods Microsoft Azure • Arc42 • Architecture Decision Records (ADR) • REST APIs • Event-Driven Architecture • Microsoft Entra ID • Active Directory • IAM • SIEM • Cloud Governance • Enterprise Architecture • Security Architecture • Azure API Management • Jira • Confluence • Draw.io • DORA • ISO/IEC 27001 • Agile • Scrum

• Planned and implemented new network infrastructure (VLAN, LACP, DMZ, structured cabling)
• Migrated from VMware to KVM using Oracle Linux Virtualization Manager (OLVM), including CPU pinning
• Hardened the entire environment using SELinux (KVM hosts, container hosts, database servers)
• Configured and operated the virtualization platform with OLVM and Ansible-based provisioning
• Containerized and redeployed critical services: WordPress, Jenkins, PostgreSQL, MariaDB, Subversion with Apache + AD integration
• Developed Ansible playbooks for automated deployment and configuration management
• Integrated Foreman for repository and security management in the DMZ
• Produced technical documentation in Markdown; organized in Bookstack
• Coordinated with external vendors (e.g. HPE) for hardware installation and setup
• Delivered all contributions documented and reproducible in Markdown

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.

• Conducting cybersecurity readiness checks based on an in-house assessment methodology
• Analyzing the external attack surface using the Graydaxe EASM platform
• Assessing maturity levels and deriving prioritized recommendations for action

• Project Manager for banking projects
• Management and coordination of the projects 'XONTRO T7 Migration' and 'UNO – Unified for New Opportunities'. Management of international stakeholders, preparation and leadership of steering committees, and coordination between departments, exchanges, and external partners.
• Project management of the strategic projects 'XONTRO T7 Migration' and 'UNO – Unified for New Opportunities'
• Management of international stakeholders including exchanges, custodians, and external project partners
• Coordination of functional and technical test activities at the exchanges between trading, IT, accounting, and mid-/back office
• Facilitation of steering committees at management level
• Preparation of decision papers, status reports, and risk analyses
• Conduct analyses in the areas of reporting (compliance, regulatory reporting, etc.), taxes on securities transactions & custody accounts, process analysis
• Enforcement of required requirements/specifications
• Coordination between business, IT, operations, and external market participants
• Coordination and alignment with external market participants, service providers, exchanges, and other project stakeholders