09.09.2025 aktualisiert

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verifiziert
Premiumkunde
100 % verfügbar

IT-Consultant / IT-Trainer / IT-Projektleiter

Alsdorf, Deutschland
Weltweit
Alsdorf, Deutschland
Weltweit

Profilanlagen

CV-Aaron-Siller-2025-ENG.docx
CV-Aaron-Siller-2025-GER-FV.pdf

Skills

I am a seasoned Microsoft Cloud Architect and IT consultant with a strong focus on Microsoft 365, Intune, and Azure. Over the years, I have gained extensive experience leading and executing complex projects, solidifying my reputation as a reliable expert in IT infrastructure design, security, and compliance across various industries.

Key Expertise:
  • Microsoft 365 Administration and Migration: I have successfully led numerous migrations to Microsoft 365, including Exchange Online, SharePoint, and hybrid environments. My expertise extends to configuring and optimizing Microsoft 365 services and ensuring seamless transitions for organizations.
 
  • Security and Compliance: Ensuring that IT environments meet stringent security and compliance standards has been a core aspect of my career. I have implemented Microsoft Defender solutions and strengthened Microsoft 365 tenants to protect against evolving threats, ensuring GDPR and other data protection compliance.
 
  • Mobile Device Management (MDM): With significant experience in Microsoft Intune, I have managed device enrollment, app deployment, compliance policy configuration, and update management. I have developed and executed MDM strategies for organizations with up to 15,000 devices, enhancing mobility without compromising security.
 
  • Workshops and Training: As an experienced IT trainer, I have conducted numerous workshops for both end-users and IT administrators. My training repertoire covers Microsoft Teams, SharePoint, OneDrive, Intune, and the entire Microsoft 365 suite, facilitating knowledge transfer and improved user adoption.
 
  • Cloud Infrastructure and Project Leadership: I have led projects that involved designing and managing hybrid cloud solutions, overseeing teams, and collaborating with external partners. My work includes integrating complex services like Windows AutoPilot and Azure Active Directory.
 
  • Technical Troubleshooting and Support: Proficient in 2nd- and 3rd-level support, I have acted as the primary contact for resolving escalated IT issues, showcasing my problem-solving capabilities in high-pressure situations.

Notable Projects:
  • IBB Bank Berlin: Implemented comprehensive IT security guidelines and trained internal teams for a hybrid infrastructure supporting 1,000 users.
 
  • Xempus AG: Oversaw Microsoft 365 administration, set up Intune MDM, configured Microsoft Defender XDR, and implemented data classification strategies.
 
  • Nordzucker AG: Led a team managing Microsoft 365, conducted KPI reviews, supported service integration, and strengthened compliance measures.
 
  • Allianz Technology: Managed large-scale Windows Server migrations and cloud consolidation efforts across international teams.
  • ARD ZDF Beitragsservice: Conducted in-depth tenant reviews and security assessments, presenting findings and recommendations at the executive level.

Sprachen

DeutschMutterspracheEnglischverhandlungssicherPolnischverhandlungssicher

Projekthistorie

Microsoft Defender XDR Specialist / IT-Security Engineer

N-ERGIE Corporation

Energie, Wasser und Umwelt

5000-10.000 Mitarbeiter

  • Planning, implementation and evaluation of phishing simulations to raise awareness among employees.
  • Implementation of targeted IT security training courses on email security, social engineering and secure working in Microsoft 365.
  • Microsoft Defender XDR management and optimization:
  • Integration of the individual Defender modules (Defender for Endpoint, Defender for Office 365, Defender for Identity, Defender for Cloud Apps) into a unified security dashboard.
  • Configuration and fine-tuning of detection rules, automated investigations, and response actions.
  • Monitor security incidents in the XDR portal and coordinate incident response.
  • Analysis and optimization of threat intelligence feeds.
  • Defender for Cloud Administration includes configuration of Security Alerts, Compliance policies and Cloud App Security Policies.
  • Review and document applicable policies (e.g., retention policies, sensitivity labels, DLP policies) and their impact on affected user groups.
  • Continuously improve security architecture by optimizing policies, automating processes, and implementing new protections.
  • Creation and maintenance of technical documentation for all configurations, changes and processes.

Microsoft Cloud Security Architect

Bilfinger SE

Architektur und Bauwesen

>10.000 Mitarbeiter

  • Development and consulting on the introduction and optimization of the E5 Security & Compliance features, including Data Loss Prevention and Sensitivity Labels.
  • Conception and consulting for the implementation of conditional access, including the replacement of the existing multi-factor authentication solution.
  • Analyze, test, and optimize the existing Intune architecture for mobile, video, and audio conferencing.
  • Support in the introduction of the new app-centric management.
  • Consulting in various M365 projects.
  • Create, implement, and manage M365 tenants in large-scale, automated environments.
  • Plan, develop, and execute comprehensive test scenarios for migration and consolidation tasks.
  • Build and use test environments to ensure system stability and compliance.
  • Close collaboration with project members and coordination within the project, especially with cross-functional teams
  • Creation and maintenance of execution concepts as well as structured, audit-proof documentation.
  • Execution of project-related tasks in accordance with specific requirements and taking into account applicable compliance requirements

Microsoft Architekt / Microsoft 365 Administration und Projektleitung

Xempus AG

Versicherungen

250-500 Mitarbeiter

  • Allgemeine Microsoft 365 Administration (Exchange, SharePoint, Teams, OneDrive, Hybride Landschaft)
  • Administration und Konfiguration Microsoft Defender XDR
  • Aufbau und Administration einer Mobile Device Management mit Microsoft Intune
  • Implementierung Microsoft Information Protection / Datenklassifizierung
  • Incident / Troubleshooting im 2nd-/3rd-Level
  • Härtung Microsoft 365 Tenant
  • Durchführung von Workshops und Schulungen in Deutsch und Englisch
  • Durchführung von Meetings auf CxO-Ebene
  • Virtualisierung mit Hyper-V

Kontaktanfrage

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