David Bleyer
Acting Partner
Acting Partner
Bliestal Consulting UG
- Redesigning cablewise infrastructure with CAT 8.1 keystones, measuring the speed and quality of the new installation with Pockethernet, documentation at a local saddlery.
- CAT 8.1 installation and building a data-center, site linking, VPN and VLAN configuration for a local car dealership, implementation of IT security standards like virus protection (G Data) and firewalling (OPNSense).
- Relocation of a tax office with redesign of the IT infrastructure, virus protection (G Data) and backup solutions (QNAP).
- Planning, conception and implementation of an in-house data-center, BSI-compliant for a commercial laundry (including Proxmox-based virtualization of existing infrastructures, QNAP, G Data, OPNSense, APC).
- Implementation and conception of security solutions in the SME sector.
- Collaboration on the IT-security concept for the Bremen network of authorities (in the dLAN network).
- Creation of IT-security concept VOIS (modules MESO, KFZ/iKFZ) including audit preparation for KBA.
- Expansion of the IT-security concept for the online service for electronic residence registration (eWA) to include use as an EfA (one-for-all) service nationwide.
- Expansion of the elect IT-security concept to include modules WOS and WVP.
- Concept development for the implementation of DIN Spec 27076 at MSEs and SMEs.
- Creation and evaluation of emergency concepts.
- Creation and evaluation of response actions and BCM plans.
- Assessment of existing business continuity management (200-4).
- Development of BCM strategy options.
- Conducting awareness training.
Senior Systems Engineer / IT-Security Coordinator
S4S Business Consulting GmbH
- Developed BSI IT-security concepts for the federal election of Germany.
- Created IT-security concepts for the central e-invoicing service for two German states.
- Designed IT-security concepts for the online service for electronic residence registration (eWA).
- Developed VPN tunnels for networked workplaces and locations.
- Managed hardware installations including PCs, notebooks, and servers.
- Created backup concepts for distributed locations with central backup including cloud solutions.
- Supported and troubleshot VoIP, WLAN/LAN/WAN issues.
- Provided user training for VPN, Office 365, and Teams.
- Delivered remote support 24/7 for office infrastructure.
- Developed concepts for digital transformation for small and medium-sized enterprises.
- Conducted security checkups on LAN/WAN connections.
- Provided training sessions on IT-security and privacy.
IT Project Manager, Privacy Coordinator
REHA gGmbH
- Ensured German Post compliant data transfer and preparation using various tools.
- Developed processes and tools for easier work for physically and mentally impaired individuals.
- Adapted Ambos-3d PBL project template of the Fraunhofer Institute IPA.
- Integrated iCom software into existing processes and automated print data streams, inserting machines and franking.
- Supported the development of a picking environment for general cargo shipments.
- Implemented and operated a Web2Print solution.
- Developed and implemented a strategy for agile parcel delivery services with SLA compliance strategies and efficient resource planning.
- Acted as Privacy Coordinator.
- Introduced and supported Office 365 and MS Teams.
- Established standard processes in software development and system architecture in line with ITIL standards.
- Conducted user training on Office 365, MS Teams, PSC, and security awareness.
Head of IT Management, Privacy Officer
Amapharm GmbH
- Developed and operated reliable IT infrastructure using IBM Blade Center, QNAP SAN, VCenter, and Veeam.
- Planned and built a new data center with scalability, future-proof design, and integration of renewable energies per BSI standards.
- Implemented IT-security concepts and authorization structures.
- Created and executed comprehensive backup concepts.
- Validated systems according to GMP.
- Managed release for Dynamics NAV customizations.
- Optimized supply chain documentation.
- Delivered internal support concepts for production facilities with quick response times.
- Developed a spam cleaner for MS-Exchange.
- Enhanced QA/QM/production processes with VBA-driven optimizations.
- Managed Motorola/Zebra Wireless LAN, MDE, and printers.
- Implemented MS-Dynamics NAV with extensions.
- Set up heterogeneous networks integrating diverse devices.
- Migrated PCs and notebooks from Windows 7 to 10.
- Administered Datev systems.
- Supervised mobile device management.
- Replaced Endian Community systems with Sophos UTM.
- Coordinated privacy and delivered associated training sessions.
Head of IT Management
SVPro Oliver Krug
- Operated and relocated housing data centers while implementing IT-security concepts.
- Developed and implemented emergency plans and BCM.
- Created complete BCM plans including BIA and risk analysis.
- Designed workflow and implemented mobile vehicle appraisal solutions accessible via browser and apps.
- Administered Active Directory setups specific to organizational units.
- Conducted planning, training, and operation for in-house and housing infrastructure.
- Performed quality checks and supported SVPRO applications.
- Maintained Datev Server and client environments.
IT Service Technician, Consultant
Merner & Co. GmbH
- Designed, installed, maintained, and operated IT infrastructure for diverse environments.
- Authorized repair service for Acer and Brother hardware.
- Virtualized server setups in Windows domains.
- Constructed a data center in compliance with BSI standards.
- Created BCM plans with BIA and risk analysis.
- Maintained servers for IHK Saarland.
- Set up and integrated Zebra printers into networks.
- Operated and maintained Datev environments.
Network/System Administrator, System Architect
Variopack GmbH & Muth GmbH
- Rebuilt Windows domains, Active Directory, and server/client infrastructure.
- Expanded networks to additional industrial sites.
- Migrated data from Windows NT4 to Server 2008.
- Implemented web server load balancing through virtualization and JBoss.
- Operated Sage and Datev systems.
- Administered Windows Server 2003 AD and Exchange.
Application Developer / Software Test Team Employee
Deutsche Telekom AG & T-Systems Nova GmbH
- Developed data migration software for MS Access and SAP environments.
- Consolidated data for Hyperion and SAP R3.
- Programmed interfaces using Visual Basic, C, C++, and Java.
- Designed test plans and executed integration tests.
- Implemented SAP WAS and customer systems.
- Conducted change management.
Network/System Administrator, System Architect, Call Center Agent
Dynetic Solutions & 1&1 Internet Service GmbH
- Rebuilt complete Windows domains and AD infrastructure.
- Migrated data from Windows NT4 environments.
- Performed web server load balancing using virtualization technologies.
- Operated Sage and Datev systems.
- Delivered customer software testing and UHD support.
- Configured VoIP/DSL hardware components.
Senior IT Consultant with a focus on information security, Privacy and architecture in the infrastructure environment
David Bleyer has many years of experience as an IT Security Coordinator in the public sector, particularly for municipal services. He has successfully worked on both the implementation of the Online Access Act (OZG) and on specialized procedures specific to authorities. His practical, goal-oriented approach has contributed to the successful completion of numerous IT security projects, which led to his certification as a BSI Baseline Protection Practitioner.
Since August 2021, he has applied his expertise to develop security concepts at the state and federal level. His responsibilities have also included preparing and supporting IT security audits (ISO 27001), following up on penetration tests, and providing actionable recommendations based on the results. Especially in complex scenarios, such as online services (EfA) integrated into nationwide portal solutions or in election procedures, his broad expertise and strong analytical thinking are among his greatest strengths.
As a trained IT specialist for application development, Mr. Bleyer has a deep understanding of the interconnections within software development and the importance of security by design in IT systems. In today’s cybersecurity landscape, Business Continuity Management (BCM) has become increasingly important, and Mr. Bleyer has the qualifications to design and implement BCM in accordance with ISO and BSI standards.
He is also responsible for the operation of data centers for small and medium-sized enterprises, as well as the provision of both on-premise and cloud-based solutions. Additionally, he manages the special requirements of complex data centers for globally operating ISPs and telecommunications providers.
For over 15 years, David Bleyer has successfully utilized virtualization and load balancing to enhance efficiency and reliability. For example, he managed the data centers of a large German internet service provider in an SLA-driven environment. His projects have also involved the design and construction of data centers, server rooms, and IT infrastructures, both active and passive components, across various industries including automotive, pharmaceuticals, IT, and office environments.
In recent years, he has managed and completed projects in the field of Industry 4.0 and automation in digital printing and postal services, logistics, and goods inspection using scanning systems (PBL, inserting modules, postage optimization, route planning, idle time tracking, and maintenance planning). As an internal Privacy officer and Privacy coordinator, he has successfully integrated Privacy, data security, and IT security into daily operations, particularly since the implementation of the EU GDPR and the associated need for suitable technical and organizational measures (TOMs). This success is thanks to his broad IT knowledge and various training sessions.
Additionally, David Bleyer possesses comprehensive knowledge of system and process validation (both theoretical and practical) in accordance with GMP, as required in industries such as the international pharmaceutical sector.
Deutsche Telekom AG & T-Systems Nova GmbH
IT specialist for application development · application development · Saarbrücken, Germany
BSI Baseline Protection Practitioner
IHK
Coordinator Privacy, Data Security And It-Security
IHK
Coordinator Privacy, Data Security And It-Security
SIKOS
Itil V4 Foundation
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