Christoph H.
Senior IT/OT-Security Specialist
Experience
Nov 2023 - Present
2 years 1 monthSenior IT/OT-Security Specialist
Aurubis AG
- Specialized on developing and implementing security strategies for IT and OT environments
- Conducted risk analyses, vulnerability management and security assessments
- Administered, built and maintained ISMS according to ISO 27001, NIS2, BSI and IEC 62443
- Planned and managed security projects in industrial and production environments
- Ensured regulatory compliance, incident response, emergency management and awareness
- Collaborated with business units, management and external service providers
- Prepared for audits and conducted internal audits
Jan 2023 - Present
2 years 11 months Lorem ipsum dolor sit amet
Self-employed
- Supported clients in infrastructure and IT security
Apr 2022 - Oct 2023
1 year 7 monthsNorderstedt, Germany
IT Infrastructure Manager
Sysmex Europe SE
- Administered and supported Microsoft Cloud and on-premises services (Microsoft 365, Azure, AD, Exchange)
- Provided 2nd level support for users and business units
- Managed and coordinated external IT service providers and support partners
- Technically supported and further developed business applications and IT services
Jul 2019 - Mar 2022
2 years 9 monthsIT Technology & Infrastructure
Peter Jensen GmbH
- Administered and operated Microsoft Cloud and on-premises services (e.g. Microsoft 365, Azure, AD, Exchange)
- Technically supported and further developed business applications
- Provided 2nd level support for users and business units
- Managed and coordinated external IT service providers
- Supported and implemented IT projects in the operational environment
Jan 2019 - Jul 2019
7 monthsIT Support Specialist
Sertronics GmbH (deployed at NDR/ARD)
- Provided 1st and 2nd level support for employees and business units
- Administered Microsoft 365 and maintained Windows servers and IT infrastructure
- Managed Microsoft Azure and supported internal IT systems, including studio systems and directing technology
- Administered Windows Server and supported printer systems
- Performed system integration
- Participated in IT projects and continuously optimized internal processes in Active Directory
Aug 2017 - Dec 2018
1 year 5 months Lorem ipsum dolor sit amet
CH Media
- Managed Exchange systems
- Delivered IT security and data security solutions
- Provided OT-security consultation
- Developed ISMS strategies
- Executed social media and content marketing
Aug 2015 - Jul 2017
2 yearsAdministrator
Sixt GmbH & Co. Autovermietung KG
- Provided 1st and 2nd level support for employees in daily operations
- Supported and maintained internal IT infrastructure
- Administered and maintained Windows servers and system services
- Managed company-wide printer landscape and telephone system
- Contributed to IT projects and technically implemented operational requirements
Mar 2013 - Jul 2015
2 years 5 monthsOn-site
Web Developer
What Media
- Provided on-site support and technical assistance directly at clients
- Conducted 1st level support for error analysis and troubleshooting
Summary
I'm Christoph, an experienced Senior IT/OT-Security Specialist, specialized in developing and implementing security strategies for IT and OT environments and performing risk analyses.
With extensive experience in administering Microsoft cloud and server solutions, I bring strong skills in planning and managing security projects and ensuring regulatory compliance.
My goal is to provide sustainable protection for IT infrastructures through effective security measures and teamwork across departments.
Since 2023, I have also been self-employed, supporting clients in infrastructure and IT security.
Languages
German
NativeEnglish
IntermediateEducation
Sep 2009 - Aug 2012
Lorem ipsum dolor sit amet
IT Specialist in System Integration · Germany
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