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Christian Decker - Managing Director and Senior Consultant

Christian Decker
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Groß-Umstadt, Germany

Experience

Jan 2016 - Present
10 years 3 months
Gross-Umstadt, Germany

Managing Director and Senior Consultant

business-security (b-sec®) GmbH

Expertise details
Position Summary
Managing Director and Senior Consultant at business-security (b-sec®) GmbH
Industries
Information Technology
Professional Services
Business Areas
Information Technology
Project Management
  • Conceptual consulting for securing business processes
  • Consulting on planning and implementation of IT and IT security projects
  • Security and policy checks, process optimizations, emergency planning
  • Project management and interim management in IT infrastructure and information security

Overview of relevant projects:

  • 2025: Consulting on a DLP concept for Digid GmbH.
  • 2025: Consulting a client after a cybersecurity attack that compromised the IT infrastructure and where the attacker obtained M365 tenant admin rights. Investigated the IT infrastructure and restored it. Developed recommendations to improve IT security.
  • 2025: Continued the projects listed below for Thyssenkrupp Marine Systems and Norddeutsche Landesbank.
  • 2024: Created a DNS concept including advice on DNS strategy and technology, DNS design, DNS security, load balancing, reverse lookup zones, and automation. Created a DHCP concept including advice on DHCP design, a central DHCP management system and automation. Advised on operating the mentioned products, the operational processes, and updated IT documentation and IT service descriptions for Thyssenkrupp Marine Systems.
  • 2024: As-is analysis and assessment of the network and security infrastructure established by providers in terms of overall architecture including design and components. Designed solution proposals to improve current operations for performance and security maximization as well as complexity reduction. Presented the results to C-level, their causes and possible solutions including required decision templates. Developed a SASE concept based on a zero-trust architecture for Norddeutsche Landesbank.
  • 2024: Continued 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 proofs of concept 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: Continued the projects listed below for Digid GmbH, Vaillant Group GmbH (until 09/2023), Federal Institute for Geosciences and Natural Resources (until 05/2023), and Union Investment IT-Services GmbH (until 07/2023).
  • 2022: Created and reviewed whitepapers for infrastructure and security architectures, and planned new network infrastructures for the German Aerospace Center.
  • 2022: Developed a concept for the technical and procedural modernization of a disaster recovery plan for United Nations Volunteers.
  • 2022: Developed a concept for migrating measurement data to a cloud environment, introduced network access control, and conducted an awareness training for Digid GmbH.
  • 2022: Developed a network segmentation concept for DZ Hyp AG.
  • 2022: Developed a network segmentation concept for the Federal Employment Agency.
  • 2021: Developed a new load balancer architecture concept for Bundeswehr Fuhrparkservices GmbH.
  • 2021: Conducted a vulnerability scan and penetration test of a web frontend including analysis and recommendations for remediation considering risk and likelihood for the client ifi GmbH.
  • 2021: Consulting, design, and subproject management for implementing a network access control solution (certificate authentication and MAC address bypass) and macro segmentation (area and zone concept based on dynamic device assignment) in office and production IT for Vaillant Group GmbH.
  • 2021: Upgraded and optimized LAN and WLAN infrastructure for United Nations Volunteers.
  • 2021: Developed a target concept for modernizing the IT security infrastructure including the DMZ (Cisco switches, firewalls, WSA, ESA, SMA), internet connections, admin and management networks, and the wireless LAN, including overseeing implementation for the Federal Institute for Geosciences and Natural Resources.
  • 2021: Created a micro-segmentation concept based on Cisco DNA, SGT, and zero trust for Union Investment IT-Services GmbH.
  • 2021: Reviewed and updated ISMS level 3 policies and created procedure instructions for Software AG.
  • 2021: Project lead for the global tech refresh project Meraki WLAN 2.0, coordinated the outsourcing of LAN/WLAN infrastructure to a managed service provider, and created a WLAN concept for automated guided vehicles for Heraeus Infosystems GmbH.
  • 2021: Project management and technical support for the 'Transition of SIEM/SOC Services' project migrating a client to a shared environment, and took on the interim role of Head of Security Operations at Datagroup SE.
  • 2021: Conducted a workshop for the future implementation of mobile device management for Allgeier Experts Go GmbH.
  • 2021: Subproject management for implementing a firewall rule management tool and recertifying NAC endpoints based on 802.1x and MAB for Union Investment IT-Services GmbH.
  • 2020: Developed a network segmentation concept for two data centers based on Cisco and VMware for Aareon AG.
  • Recorded and analyzed the current network architecture including project initiation.
  • Designed a micro-segmentation concept in the data center and access network.
  • 2020: Infrastructure and security architecture audit for Stuttgarter Versicherung AG.
  • Analyzed the IT infrastructure and security architecture regarding network and security component configurations. Also reviewed contracts, process documents, and manuals for completeness. Developed recommendations to improve the stability and operation of the infrastructure. Created a network segmentation concept and led the project to implement the measures from the audit.
  • 2020: Consulting on setting up an ISMS-light for Josera foodforplanet GmbH & Co. KG.
  • 2020: Security architecture consulting for Datagroup SE.
  • Developed a future IT infrastructure and IT security architecture.
  • Documented the current IT architecture of all 23 entities.
  • Made recommendations to optimize the IT infrastructure and drafted a comparison of a traditional perimeter security concept versus a zero trust model.
  • Created a security zone concept.
  • Designed an IT infrastructure architecture in coordination with all entities.
  • 2018 - 2019: Stream lead in the cybersecurity program at 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 Deutsche Lufthansa AG.
  • Project management for the development, evaluation, and management of the company-wide information security architecture.
  • Developed a security strategy and a roadmap to align the security architecture with the zero trust model.
  • Evaluated market security solutions, services, and tools.
  • Defined requirements for RFPs and assessed proposals.
  • Developed, maintained, and monitored security architecture artifacts.
  • Conducted security assessments of existing and new IT systems and security services.
  • 2018: ISMS consulting for GLS IT Services GmbH.
  • Advised on implementing and initially operating an ISMS based on ISO27001.
  • Audited the IT environments of GLS country subsidiaries.
  • Analyzed and assessed IT security risks and derived necessary measures.
  • Developed solution proposals in coordination with relevant stakeholders.
  • Managed the project and handed over the ISMS to operations.
  • 2016 - 2018: Security pre-sales consultant for Cisco Systems GmbH.
  • Provided nationwide strategic and conceptual consulting to major enterprise and financial and insurance clients on Cisco and Meraki security products and services such as Firepower, WSA, ESA, Stealthwatch, and ISE.
  • 2017 - 2018: Designed and implemented an ISMS for Verivox GmbH.
  • Conducted various BIAs and gap analyses.
  • Developed security policies based on ISO 2700x.
  • Served as interim information security officer.
  • 2017: Developed an emergency concept for VPV Lebensversicherungs-AG.
  • Reviewed and updated the IT emergency manual.
  • 2016: Consulting and project management for designing cloud & hosting services for Vodafone Group Services GmbH.
  • Analyzed and optimized the sell-build-run process.
  • Created detailed level designs for cloud products.
Jan 2013 - Dec 2016
4 years
Gross-Umstadt, Germany

Freelance IT Infrastructure and IT Security Consultant

christiandecker.net

Expertise details
Position Summary
Freelance IT Infrastructure and IT Security Consultant at christiandecker.net
Industries
Insurance
Telecommunication
Business Areas
Information Technology
Project Management
  • 2015 - 2016: Consulting and project management for building an IT security demand management for corporate security at Vodafone Deutschland GmbH.
  • Supported the information security officer.
  • Proof-of-concept of a WAF integrated with SIEM.
  • Security check of the top 10 applications.
  • Security review of a cloud solution for an internal DMS.
  • Security audit of a data center coupling.
  • Migration of the SOC from Kabel Deutschland to Vodafone.
  • Defined security parameters for a VDI environment.
  • 2015: Created a telephony security concept for VPV Lebensversicherungs-AG.
  • 2014 - 2015: Consulting and various IT security project management for corporate security at Kabel Deutschland Vertrieb und Service GmbH.
  • Implemented NAC in the corporate network with 4000 endpoints based on Cisco ISE and 802.1x in preparation for TrustSec microsegmentation.
  • Implemented a firewall policy tool based on Tufin.
  • Optimized processes and SIEM integrations based on ArcSight.
  • Implemented a vulnerability scanner based on Tripwire.
  • Implemented mobile device management based on SAP Afaria.
  • Reviewed and aligned the security policies of both companies.
Jan 2008 - Dec 2013
6 years
Wiesbaden, Germany

Head of Infrastructure & Security and Service Desk / Information Security Officer

Commerz Real AG

Expertise details
Position Summary
Head of Infrastructure & Security and Service Desk / Information Security Officer at Commerz Real AG
Industries
Banking and Finance
Real Estate
Business Areas
Information Technology
Project Management
  • Updated Windows Server 2003 to 2008.
  • New employee evaluation system.
  • Project management for project managers 1 – 4.
  • Visualizing and presenting.
Jan 2006 - Dec 2008
3 years
Egelsbach, Germany

Head of Technical Department

Com-Sys Gesellschaft für Netzwerktechnik mbH

Expertise details
Position Summary
Head of Technical Department at Com-Sys Gesellschaft für Netzwerktechnik mbH
Industries
Information Technology
Business Areas
Information Technology
  • Compared IT security criteria (ITIL, BS2700x).
  • Realtech network management and Funkwerk UTM appliance.
Jan 2002 - Dec 2006
5 years
Egelsbach, Germany

Senior Support Engineer

Com-Sys Gesellschaft für Netzwerktechnik mbH

Expertise details
Position Summary
Senior Support Engineer at Com-Sys Gesellschaft für Netzwerktechnik mbH
Industries
Information Technology
Business Areas
Customer Service
Information Technology
  • Avaya advanced 1st and 3rd level support.
  • Experience with Enterasys PEN, IDS, IDS-Advanced.
  • Experience with Kobil SmartKey, SmartToken, SecOvid, and mIDentity.
  • Varysys Packetalarm administrator.
  • Experience with Enterasys routing, VPN, UPN, and IDS.
Jan 2000 - Dec 2002
3 years
Frankfurt, Germany

Team Leader IP Network Management

Deutsche Telekom AG

Expertise details
Position Summary
Team Leader IP Network Management at Deutsche Telekom AG
Industries
Telecommunication
Business Areas
Information Technology
Operations
  • Team leadership in IP network management using Cisco technologies (ICND, BSCN, BCMSN, BCRAN, CVOICE, CIT, CID, CATM, AOSPF, ABGP, SNAM, CCIE-VB).
Jan 1999 - Dec 2000
2 years
Frankfurt, Germany

Network Planning and Design Staff

Fraport AG

Expertise details
Position Summary
Network Planning and Design Staff at Fraport AG
Industries
Transportation
Business Areas
Information Technology
  • Airport management.
  • Cisco router configurations on IOS-based systems.
  • Conflict management, moderating and presenting.
Jan 1997 - Dec 1999
3 years
Frankfurt, Germany

Network Operations Center Staff

Fraport AG

Expertise details
Position Summary
Network Operations Center Staff at Fraport AG
Industries
Transportation
Business Areas
Information Technology
  • NOC-Operation-Center Trainee.
  • UNIX, migration to Solaris.
  • Federal Data Protection Act.
  • Basics of Ethernet / Token Ring / ATM.
  • Sniffer Network Analyzer.
Jan 1996 - Dec 1997
2 years
Frankfurt, Germany

Network Installation Service Staff

Fraport AG

Expertise details
Position Summary
Network Installation Service Staff at Fraport AG
Industries
Transportation
Business Areas
Information Technology
Jan 1993 - Dec 1996
4 years
Frankfurt, Germany

Vocational training as a communications electronics technician specializing in telecommunications

Fraport AG

Expertise details
Position Summary
Vocational training as a communications electronics technician specializing in telecommunications at Fraport AG
Industries
Aerospace and Defense
Business Areas
Information Technology
  • Bosch Integral 22x/E.

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Professional Services, Telecommunication, Banking and Finance, Real Estate, and Transportation.

Information Technology
Professional Services
Telecommunication
Banking and Finance
Real Estate
Transportation
Profile match chart

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Project Management, Customer Service, and Operations.

Information Technology
Project Management
Customer Service
Operations
Profile match chart

Summary

  • Conceptual consulting for securing business processes
  • Consulting on planning and implementation of IT and IT security projects
  • Security and policy checks, process optimizations, emergency planning
  • Project management and interim management in IT infrastructure and information security

Overview of relevant projects:

  • 2025: Consulting on a DLP concept for Digid GmbH.
  • 2025: Consulting a client after a cybersecurity attack that compromised the IT infrastructure and where the attacker obtained M365 tenant admin rights. Investigated the IT infrastructure and restored it. Developed recommendations to improve IT security.
  • 2025: Continued the projects listed below for Thyssenkrupp Marine Systems and Norddeutsche Landesbank.
  • 2024: Created a DNS concept including advice on DNS strategy and technology, DNS design, DNS security, load balancing, reverse lookup zones, and automation. Created a DHCP concept including advice on DHCP design, a central DHCP management system and automation. Advised on operating the mentioned products, the operational processes, and updated IT documentation and IT service descriptions for Thyssenkrupp Marine Systems.
  • 2024: As-is analysis and assessment of the network and security infrastructure established by providers in terms of overall architecture including design and components. Designed solution proposals to improve current operations for performance and security maximization as well as complexity reduction. Presented the results to C-level, their causes and possible solutions including required decision templates. Developed a SASE concept based on a zero-trust architecture for Norddeutsche Landesbank.
  • 2024: Continued 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 proofs of concept 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: Continued the projects listed below for Digid GmbH, Vaillant Group GmbH (until 09/2023), Federal Institute for Geosciences and Natural Resources (until 05/2023), and Union Investment IT-Services GmbH (until 07/2023).
  • 2022: Created and reviewed whitepapers for infrastructure and security architectures, and planned new network infrastructures for the German Aerospace Center.
  • 2022: Developed a concept for the technical and procedural modernization of a disaster recovery plan for United Nations Volunteers.
  • 2022: Developed a concept for migrating measurement data to a cloud environment, introduced network access control, and conducted an awareness training for Digid GmbH.
  • 2022: Developed a network segmentation concept for DZ Hyp AG.
  • 2022: Developed a network segmentation concept for the Federal Employment Agency.
  • 2021: Developed a new load balancer architecture concept for Bundeswehr Fuhrparkservices GmbH.
  • 2021: Conducted a vulnerability scan and penetration test of a web frontend including analysis and recommendations for remediation considering risk and likelihood for the client ifi GmbH.
  • 2021: Consulting, design, and subproject management for implementing a network access control solution (certificate authentication and MAC address bypass) and macro segmentation (area and zone concept based on dynamic device assignment) in office and production IT for Vaillant Group GmbH.
  • 2021: Upgraded and optimized LAN and WLAN infrastructure for United Nations Volunteers.
  • 2021: Developed a target concept for modernizing the IT security infrastructure including the DMZ (Cisco switches, firewalls, WSA, ESA, SMA), internet connections, admin and management networks, and the wireless LAN, including overseeing implementation for the Federal Institute for Geosciences and Natural Resources.
  • 2021: Created a micro-segmentation concept based on Cisco DNA, SGT, and zero trust for Union Investment IT-Services GmbH.
  • 2021: Reviewed and updated ISMS level 3 policies and created procedure instructions for Software AG.
  • 2021: Project lead for the global tech refresh project Meraki WLAN 2.0, coordinated the outsourcing of LAN/WLAN infrastructure to a managed service provider, and created a WLAN concept for automated guided vehicles for Heraeus Infosystems GmbH.
  • 2021: Project management and technical support for the 'Transition of SIEM/SOC Services' project migrating a client to a shared environment, and took on the interim role of Head of Security Operations at Datagroup SE.
  • 2021: Conducted a workshop for the future implementation of mobile device management for Allgeier Experts Go GmbH.
  • 2021: Subproject management for implementing a firewall rule management tool and recertifying NAC endpoints based on 802.1x and MAB for Union Investment IT-Services GmbH.
  • 2020: Developed a network segmentation concept for two data centers based on Cisco and VMware for Aareon AG.
  • Recorded and analyzed the current network architecture including project initiation.
  • Designed a micro-segmentation concept in the data center and access network.
  • 2020: Infrastructure and security architecture audit for Stuttgarter Versicherung AG.
  • Analyzed the IT infrastructure and security architecture regarding network and security component configurations. Also reviewed contracts, process documents, and manuals for completeness. Developed recommendations to improve the stability and operation of the infrastructure. Created a network segmentation concept and led the project to implement the measures from the audit.
  • 2020: Consulting on setting up an ISMS-light for Josera foodforplanet GmbH & Co. KG.
  • 2020: Security architecture consulting for Datagroup SE.
  • Developed a future IT infrastructure and IT security architecture.
  • Documented the current IT architecture of all 23 entities.
  • Made recommendations to optimize the IT infrastructure and drafted a comparison of a traditional perimeter security concept versus a zero trust model.
  • Created a security zone concept.
  • Designed an IT infrastructure architecture in coordination with all entities.
  • 2018 - 2019: Stream lead in the cybersecurity program at 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 Deutsche Lufthansa AG.
  • Project management for the development, evaluation, and management of the company-wide information security architecture.
  • Developed a security strategy and a roadmap to align the security architecture with the zero trust model.
  • Evaluated market security solutions, services, and tools.
  • Defined requirements for RFPs and assessed proposals.
  • Developed, maintained, and monitored security architecture artifacts.
  • Conducted security assessments of existing and new IT systems and security services.
  • 2018: ISMS consulting for GLS IT Services GmbH.
  • Advised on implementing and initially operating an ISMS based on ISO27001.
  • Audited the IT environments of GLS country subsidiaries.
  • Analyzed and assessed IT security risks and derived necessary measures.
  • Developed solution proposals in coordination with relevant stakeholders.
  • Managed the project and handed over the ISMS to operations.
  • 2016 - 2018: Security pre-sales consultant for Cisco Systems GmbH.
  • Provided nationwide strategic and conceptual consulting to major enterprise and financial and insurance clients on Cisco and Meraki security products and services such as Firepower, WSA, ESA, Stealthwatch, and ISE.
  • 2017 - 2018: Designed and implemented an ISMS for Verivox GmbH.
  • Conducted various BIAs and gap analyses.
  • Developed security policies based on ISO 2700x.
  • Served as interim information security officer.
  • 2017: Developed an emergency concept for VPV Lebensversicherungs-AG.
  • Reviewed and updated the IT emergency manual.
  • 2016: Consulting and project management for designing cloud & hosting services for Vodafone Group Services GmbH.
  • Analyzed and optimized the sell-build-run process.
  • Created detailed level designs for cloud products.

Skills

Operating Systems

  • Macos, Ios, Windows, Linux, Unix

Software

  • Ms Office Suite Including Outlook, Project, Visio And Jira

Vendors

  • Cisco, Meraki, Prtg, Zscaler, Netskope, Aruba, Cyberark, Arcsight, Ping, Beta Systems, Okta, Rsa, Apiida, Duo, Extreme Networks, Juniper, Kobil, Astaro, Mobileiron, Airwatch, Fortinet, Dell, Hp, Radware

Domains

  • Security Architecture, Secure Access Service Edge (Sase), Data Loss Prevention (Dlp), Privileged Access Management (Pam), Identity Management (Idm), Identity And Access Management (Iam), Multi-factor Authentication (Mfa, 2fa), Single Sign-on (Sso), Web Application Firewall (Waf), Mobile Device Management (Mdm), Enterprise Mobility Management (Emm), Ddos Protection, Endpoint Security, Network Security, Dns Security, Security Information And Event Management (Siem), Security Operations Center (Soc), Cyber Defence Center (Cdc), Computer Emergency Response Team (Cert), Network Operations Center (Noc), Network Access Control (Nac), Operational Technology (Ot), Internet Of Things (Iot), Macro And Micro Segmentation, Cloud Security, Access Management (Aaa), Vulnerability Management, Patch Management, Information Security Management Systems (Isms), Intrusion Detection And Prevention (Ids/ips), Network Security Management (Nsm), Bsi, Gdpr, Itil, Iso2700x, Critical Infrastructures (Kritis), Request For Information (Rfi), Request For Proposal (Rfp), Vendor Evaluation, Market Analysis, Anti-virus, Advanced Threat Protection, Advanced Malware Protection (Amp), Governance, Risk And Compliance (Grc), Audits And Certifications, Cryptography, Penetration Testing, Configuration Management, Change Management, Incident Management, Business Continuity Management (Bcm), Public Key Infrastructure (Pki)

Languages

German
Native
English
Advanced
French
Elementary

Education

Aug 1993 - Jul 1996

Fraport AG

Vocational training as a communications electronics technician, specialization telecommunications · Communications Electronics Technician, Specialization Telecommunications · Frankfurt, Germany

Certifications & licenses

Cisco AMP And Threat Grid Integration With Cisco Email Security

business-security GmbH

Cisco AMP For Endpoints Fundamentals

business-security GmbH

Cisco Advanced Threat Security Domain Fire Jumper Academy

business-security GmbH

Cisco CSS Stealthwatch And SOVA

business-security GmbH

Cisco Cloud, Web And Email Security Domain Fire Jumper Academy

business-security GmbH

Cisco Cyber Security Specialist Stage I Exam

business-security GmbH

Cisco Network Security Domain Fire Jumper Academy

business-security GmbH

Cisco Ransomware Defense Solution

business-security GmbH

Cisco Sales Compliance Phase 2- Compliant Alternatives To Off-book Funds Assessment

business-security GmbH

Cisco Threat Grid Fundamentals

business-security GmbH

Cisco Umbrella Security Sales Training

business-security GmbH

Cisco Umbrella Security Technical Training

business-security GmbH

Cisco Understanding The Umbrella Proposition - Distributor Assessment

business-security GmbH

Cisco Visibility And Enforcement Security Domain Fire Jumper Academy

business-security GmbH

Cisco CMNA Meraki training with certification

christiandecker.net

Cisco Cisco Talos - The Team That Keeps Us Cybersafe

christiandecker.net

Cisco Cisco Tetration Analytics

christiandecker.net

Cisco Compliance: Risk Assessment

christiandecker.net

Cisco Get Some Cisco Spark In Your Life!

christiandecker.net

Cisco My Business Reports Test 1

christiandecker.net

Cisco Power Update - Data And Analytics

christiandecker.net

Cisco Safety Induction Training V2

christiandecker.net

Cisco Sales Compliance Training Assessment

christiandecker.net

Cisco Security Baseline Assessment

christiandecker.net

Cisco The Road To Success With Cloud Networking

christiandecker.net

CISSP training with certification

Commerz Real AG

Astaro Certified Administrator, Engineer, Expert and Sales Expert V7

Com-Sys Gesellschaft für Netzwerktechnik mbH

Enterasys PEN, IDS, IDS-Advanced with certification

Com-Sys Gesellschaft für Netzwerktechnik mbH

Enterasys Routing, VPN, UPN and IDS with certification

Com-Sys Gesellschaft für Netzwerktechnik mbH

Kobil SmartKey, SmartToken, SecOvid and mIDentity with certification

Com-Sys Gesellschaft für Netzwerktechnik mbH

Varysys Packetalarm Administrator

Com-Sys Gesellschaft für Netzwerktechnik mbH

CISCO: ICND, BSCN, BCMSN, BCRAN, CVOICE, CIT, CID, CATM, AOSPF, ABGP, SNAM and CCIE-VB with certification

Deutsche Telekom AG

Statistics

Experience

Total positions 10
Experience in Information Technology 17 y
Avg length 4 y 2 m
Longest experience 10 y 2 m

Global Experience

Countries worked in 1 (Germany)
Primary country Germany

Expertise

Recent roles Managing Director and Senior Consultant, Freelance IT Infrastructure and IT Security Consultant, Head of Infrastructure & Security and Service Desk / Information Security Officer
Main industries Information Technology, Professional Services, Telecommunication
Main business areas Information Technology, Project Management, Customer Service

Qualifications

Certifications earned 32

Profile

Created
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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Christian based?

Christian is based in Groß-Umstadt, Germany and can operate in on-site, hybrid, and remote work models.

What languages does Christian speak?

Christian speaks the following languages: German (Native), English (Advanced), French (Elementary).

How many years of experience does Christian have?

Christian has at least 33 years of experience. During this time, Christian has worked in at least 10 different roles and for 6 different companies. The average length of individual experience is 3 years and 4 months. Note that Christian may not have shared all experience and actually has more experience.

What roles would Christian be best suited for?

Based on recent experience, Christian would be well-suited for roles such as: Managing Director and Senior Consultant, Freelance IT Infrastructure and IT Security Consultant, Head of Infrastructure & Security and Service Desk / Information Security Officer.

What is Christian's latest experience?

Christian's most recent position is Managing Director and Senior Consultant at business-security (b-sec®) GmbH.

What companies has Christian worked for in recent years?

In recent years, Christian has worked for business-security (b-sec®) GmbH.

Which industries is Christian most experienced in?

Christian is most experienced in industries like Information Technology, Professional Services, and Telecommunication. Christian also has some experience in Banking and Finance, Real Estate, and Transportation.

Which business areas is Christian most experienced in?

Christian is most experienced in business areas like Information Technology, Project Management, and Customer Service. Christian also has some experience in Operations.

Which industries has Christian worked in recently?

Christian has recently worked in industries like Information Technology and Professional Services.

Which business areas has Christian worked in recently?

Christian has recently worked in business areas like Information Technology and Project Management.

What is Christian's education?

Christian attended Fraport AG for Communications Electronics Technician, Specialization Telecommunications.

Does Christian have any certificates?

Christian has 32 certificates. Among them, these include: Cisco AMP And Threat Grid Integration With Cisco Email Security, Cisco AMP For Endpoints Fundamentals, and Cisco Advanced Threat Security Domain Fire Jumper Academy.

What is the availability of Christian?

Christian is immediately available part-time for suitable projects.

What is the rate of Christian?

Christian's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.

How to hire Christian?

To hire Christian, click the Meet button on the profile to request a meeting and discuss your project needs.

Average rates for similar positions

Rates are based on recent contracts and do not include FRATCH margin.

1200
900
600
300
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Market avg: 888-1048 €
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.

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