About Christian
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Experience
- Freelance / various clientsSenior Cloud Security & Compliance ConsultantDIGITAL AND ITJune 2025 - Today (1 year and 1 month)Vienna, AustriaFull-time independent consultant delivering cloud security architecture, compliance auditing, and AWS / Microsoft 365 hardening for regulated clients. Not a side practice, this is my full occupation.- Security audits and compliance reviews: cloud configuration and IAM audits, least-privilege assessment, evidence-based risk review, and ISO 27001 / SOC 2 / GxP readiness for regulated environments.- Build and operate AWS infrastructure: VPC segmentation, IAM design, EC2/RDS hardening, GuardDuty, KMS, and secure logging, with Terraform-based change control, state management, and CI/CD integration.- Recover and harden production environments: Cloudflare WAF and DNS, Microsoft 365 mail flow, SPF/DKIM/DMARC enforcement, Conditional Access remediation, and AWS configuration drift on high-risk changes.- Administer Entra ID and Microsoft 365: Conditional Access, MFA enforcement, Defender for Office 365, Exchange Online and hybrid mail flow, and Intune device compliance across Windows, macOS, iOS, and Android.- Deliver Cloudflare and web infrastructure: WAF tuning, DDoS and bot mitigation, Workers and Zero Trust/Access, TLS, WordPress/WooCommerce hardening, and serverless edge migrations.- 100% client satisfaction across 50+ completed engagements: production troubleshooting, migrations, and infrastructure delivery with written implementation notes, rollback plans, and operational follow-up.
- TakedaInformation Security Architect, CloudPHARMACEUTICALS INDUSTRYDecember 2021 - November 2024 (2 years and 11 months)Vienna, AustriaLed AWS platform architecture across hybrid environments, integrating security controls into standard infrastructure design. Owned and evolved AWS landing zone patterns covering IAM, networking, logging, monitoring, and compliance.Drove infrastructure modernization using Terraform and DevSecOps practices, embedding guardrails into CI/CD and operational workflows.Contributed to global cloud standards, automation frameworks, and audit-ready designs used across multiple teams and regions, aligned with ISO 27001, SOC 2, and GxP.Worked across global security, platform, and application stakeholders to deliver scalable cloud architectures while maintaining delivery velocity.
- TricentisSenior System Engineer, Virtualization & Core ITSOFTWARE PUBLISHINGJuly 2021 - December 2021 (5 months)Vienna, AustriaOwned VMware platforms (vSphere, vCenter, Horizon, VxRail) across core, edge, and private cloud environments. Led service maturity initiatives: security hardening, vulnerability remediation, backup architecture, disaster-recovery automation, and operational resilience. Delivered backup modernisation, including encrypted backups, virtual tape-out, and recovery testing. Created maturity standards and operational documentation.
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Certifications
- AWS Certified Security - SpecialtyAmazon Web Services2024
- AWS Certified Solutions Architect - ProfessionalAmazon Web Services2026