David B.
Acting Partner
Experience
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 inhouse data center, BSI-compliant for 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 IT-security concept to include modules wos & 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 (ISO 22301)
- Development of BCM strategy options
- Conducting awareness training
Senior Systems Engineer / IT-security Coordinator
S4S Business Consulting GmbH
- Developed BSI IT-security concept elect.was for the federal election of Germany
- Developed BSI IT-security concept for the central e-invoicing service for two German states
- Developed BSI IT-security concept for the online service for electronic residence registration (eWA)
- Conceived VPN tunnels for networked workplaces and locations
- Performed hardware installations PC / notebook / server
- Developed a backup concept for distributed locations and central backup in addition to the cloud of business-critical data
- Supported and troubleshot VoIP
- Supported and troubleshot WLAN / LAN / WAN
- Conducted user training VPN / Office 365 / Teams
- Provided remote support 24/7 for Office infrastructure
- Concept development for SMEs for digital transformation
- Performed security checkup LAN / WAN connections
- Conducted training and introductions to IT-security and privacy
IT Project Manager, Privacy Coordinator
REHA gGmbH
- German Post compliant data transfer and preparation with various tools
- Developed processes and tools for easier work for physically and mentally impaired people
- Adapted Ambos-3d PBL project template of the Fraunhofer Institute IPA
- Integrated iCom software into existing processes and automatic control of print data streams, inserting machines and franking
- Integrated and supported a picking environment for the shipment of general cargo
- Implemented and operated a Web2Print solution
- Developed and implemented a strategy for agile parcel delivery services with strategies for SLA compliance and efficient employee and resource planning
- Served as privacy coordinator
- Introduced and supported Office 365 / MS Teams
- Developed standard processes in software development and system architecture according to ITIL standard
- Conducted user training in the Office 365 environment, MS Teams; PSC, security awareness
Head of IT Management, Privacy Officer
Amapharm GmbH
- Developed and operated a reliable IT infrastructure based on IBM BladeCenter and fully virtualized server landscape with QNAP SAN, vCenter, Veeam
- Planned a new data center including infrastructural expansion, air conditioning, IT-SEC according to BSI, scalability, future-proof design and use of renewable energies
- Developed IT-security concept and implemented an authorization structure on the hardware side and by means of tools
- Developed and implemented the backup concept
- Performed system validation according to GMP
- Managed release management for Dynamics NAV customizations
- Managed enterprise-wide deployment
- Documented and optimized the supply chain
- Developed an internal support concept for production plants with fast response times and tracking based on Bugzilla
- Developed a spam cleaner for POP connector in conjunction with MS Exchange
- Developed several Microsoft VBA-driven process optimizations in QA/QM/production
- Implemented Motorola/Zebra wireless LAN, MDE & printer
- Implemented MS-Dynamics NAV with extensions from Yaveon & Etagis
- Established a heterogeneous network of thin clients, PCs/notebooks and Apple environment
- Operated Datev and Datev DMS environment
- Migrated PCs/notebooks from Windows 7 to Windows 10
- Managed mobile device management
- Replaced Endian Community with Sophos UTM with RED APs Europe-wide
- Administered and operated the telephone system
- Redesigned international calls using Webex, GoTo Meeting, Skype for Business
- Served as privacy supervisor
- Conducted training on privacy, Office, Office 365
Head of IT Management
SVPro Oliver Krug
- Operated a fully virtualized server landscape in the housing data center
- Redesigned and relocated the housing data center
- Developed and implemented an IT-security concept
- Developed and implemented emergency and recovery plans and BCM plans, including BIA and risk analysis
- Developed and implemented the backup concept
- Managed release documentation (DHL / DML)
- Conceived, implemented and operated internet access by means of load balancing DSL/SkyDSL
- Conceived, designed, implemented, tested, trained, operated and supported browser & app solutions for mobile creation of vehicle appraisals
- Implemented different organizational units on Active Directory
- Planned, implemented, operated and trained on in-house & housing infrastructure
- Performed quality control and support for SVPRO software
- Installed, operated and maintained Datev server & client
- Managed mobile device management
- Administered and operated the telephone system
- Deployed and planned routes for field experts including vehicle and hardware contingents, on-call duty and shift work according to legal requirements
IT Service Technician, Consultant
Merner & Co. GmbH
- Designed, installed, maintained and operated IT infrastructure and networks for offices, industrial halls and server rooms
- Repaired Acer & Brother hardware as an official service partner
- Virtualized servers in a Windows domain
- Planned and constructed a data center at a public broadcaster according to BSI standards
- Created a BCM with BIA and risk analysis
- Maintained IHK Saarland server/client hardware & software
- Maintained, set up and network-integrated Zebra printers and PCs
- Installed, operated and maintained Datev server & client
Network/System Administrator, System Architect
Variopack GmbH & Muth GmbH
- Rebuilt Windows domain, Active Directory and complete server/client infrastructure
- Expanded the existing network to other industrial halls
- Migrated data & services from Windows NT4 to Windows Server 2008
- Implemented web server load balancing using virtualization and JBoss
- Installed, operated and maintained Datev server & client
- Operated Sage
- Operated Windows Server 2003 AD network and Exchange
Application Developer / Software Test Team Employee
Deutsche Telekom AG & T-Systems Nova GmbH
- Developed data migration software from MS Access and SAP R2 to SAP R3
- Developed data consolidation software for Hyperion & SAP R3 with evaluation software featuring graphical processing
- Performed application development in the SAP R3 environment
- Implemented SAP WAS
- Programmed interfaces
- Developed various applications in Visual Basic, C, C++ and Java
- Developed test plans and implemented and evaluated integration tests
- Managed change management
- Developed a customer frequency counting system
Network/System Administrator, System Architect, Call Center Agent
Dynetic Solutions & 1&1 Internet Service GmbH
- Rebuilt Windows domain, Active Directory and complete server/client infrastructure
- Migrated data & services from Windows NT4 to Windows Server 2008
- Implemented web server load balancing using virtualization and JBoss
- Installed, operated and maintained Datev server & client
- Operated Sage
- Operated Windows Server 2003 Active Directory and Microsoft Exchange
- Performed software testing
- Provided first and second level customer support
- Set up, supported and configured VoIP/DSL hardware and software
Summary
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.
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.
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.
Skills
- Operating Systems: Linux (Expert > 20), Centos, Linux Mint, Suse Linux Enterprise Server (Sles), Redhat, Ubuntu, Sinix, Unix (Expert > 18), Windows Server (Expert From Nt), Mac Os X (> 10), Debian, Raspbian, Suse / Opensuse (> 10), Hpux, Windows (Expert From 3.1 To Today)
- Programming And Scripting Languages: Basic, Batch, Bash, C, C++, Css, Html, Javascript, Java, Ms Visual Basic For Applications (Vba), Powershell, Sap Abap/4, Shell Scripts, Sql, Ms Visual Basic, Php, Uml, Vb.net, Xml
- Databases: Informix, Mysql, Mariadb, Postgresql, Microsoft Sql Server, Microsoft Access
- Tools And Products: Active Directory, Adobe Acrobat Pro, Adobe Cc, Adobe Illustrator, Adobe Indesign, Adobe Lightroom, Adobe Photoshop, Apache, Arcserve, Atlassian Confluence, Atlassian Jira, Backup Exec, Bugzilla, Citrix, Confixx, Crystal Reports, Datev, Datev Dms, Dms, Easybell, Eclipse, Enterprise Architect, Enterprise Manager, Exceed, Fanvil, Gimp, Git, Gitlab, Gotomeeting, Hiscout, Hp Quality Center, Hyperion, Icom Software, Iis, Inkscape, Jboss, Libreoffice, Microsoft 365, Microsoft Azure, Microsoft Dynamics Navision, Microsoft Exchange, Microsoft Office 365, Microsoft Project, Microsoft Sharepoint, Microsoft Teams, Microsoft Visio, Movilizer, Open Exchange, Openoffice, Plesk, Pmbok, Postfix, Project Libre, Proxmox, Qnap, Sage, Sap R3, Sap Was, Scrum, Sendmail, Skype For Business, Sql Developer, Subversion, Svn, Tomcat, Trello, Ubuntu Server, Veeam, Verinice, Virtualbox, Vmware, Wordpress, Xen Project
- Security: Endian Community, Fortinet, G-data, Kaspersky, Opnsense, Rfid, Ssl/tls, Sophos, Symantec, Trendmicro, X-mime
- Internet Technologies: 56k, Isdn, Adsl, Sdsl, Skydsl, Lte, Fiber Optic, Dsl Via Cable
- Network: 3com, Allied Telesyn, Aruba, Avm, Business Lancom, D-link, Hpe, Motorola, Netgear, Speedport, Sophos, Zebra, Zyxel
- Printing And Scanning Systems: Bambulab, Brother, Canon, Dymo, Hp, Lexmark, Oce, Sharp, Utax, Xerox, Zebra
- Cloud: Amazon Web Services (Aws), Docker, Microsoft Azure, Openshift
- Frameworks And Standards: Cissp, Din Spec 27076, Gdpr, Gmp, Baseline Protection According To Bsi 2020–2023, Itil Foundation V4, Iso 9001, Iso 27001, Pmbok, Xp, Scrum, Kan-ban
- General It Environment: Microsoft Office 365, Microsoft Teams, Trello, Ms-project, Ms-access, Ms-visio, Itil Foundation V4, Gdata, Bsi Baseline Protection Compendium 2022, Hiscout, Din Spec 27076, Qnap, Aruba, Power Walker
Languages
Education
IT specialist for application development · Germany
Certifications & licenses
BSI Grundschutz Praktiker
ITIL Foundation V4
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