You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Eros SailerES

Eros Sailer

IT EXPERT

€890/day
München, DE
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
Back to original language

About Eros

Driving technology forward & ensuring security – that's what I stand for. With a clear hands-on mentality and a passion for complex challenges, I support companies in the secure transformation of legacy systems to the cloud. My focus is on highly available, scalable, and secure IT solutions with Microsoft 365 and modern infrastructure.

Expertise in Migrations & Cloud Architecture

Active Directory & Exchange Migrations (Hybrid, Office 365, Entra ID)

Tenant-to-Tenant Migrations incl. Devices, SharePoint, Teams & OneDrive

File Server Migrations to SharePoint Online & OneDrive

MDM Migrations (e.g., Sophos → Microsoft Endpoint/Intune)

Modern Workplace & Security

Microsoft Endpoint (Intune) – Zero Touch Deployment & Smartphone/Surface Hub Provisioning

Microsoft Teams incl. VoIP & Landline Integration

Microsoft Security (Defender, 2FA, Geoblocking, Risk Management)

Implementation according to ISO 27001, ISO 9001, ISO 14001, TISAX

Network & Infrastructure

Windows Server Failover, Virtualization (Hyper-V, VMware)

Firewalls (pfSense – Expert), VPN (OpenVPN with Failover)

Entra ID Connection to Third-Party Systems (SSO, LDAP)

WLAN Networks with UniFi (incl. Hotel Systems)

Automation & Innovation

PowerShell, Python, Bash & Terraform Scripting

PowerApps & Power Automate for Process Optimization

Introduction of AI/Bots for Internal Purposes
  • German

    Native or bilingual

  • Italian

    Native or bilingual

  • English

    Fluent

Can work on-site
München (up to 50km)

Experience

  • MVI Group GmbH
    Vice President IT
    January 2025 - Today (1 year and 7 months)
    Landkreis München, BY, Germany
    Strategic leadership of the entire IT organization with budget responsibility.
    • Implementation of a hybrid cloud concept, reduction of operating costs by 25%
    • Introduction of a pilot project for zero-trust network architecture
    • Implementation of Microsoft Dynamics 365 Business Central
    • Expansion and administration of the Microsoft 365 environment for 700 employees
    • Building and leading a high-performing support team to optimize user support and business processes
    Microsoft 365 Network Administration License Management
  • MVI Group GmbH
    IT Coordinator
    June 2023 - January 2025 (1 year and 7 months)
    Rollout, optimization, and administration of Microsoft 365 tenants for 700 employees
    • Expertise in Microsoft 365 services and administration
    • Implementation of serverless architectures at 10 locations
    • Establishment of IT governance processes and introduction of a change management tool
    • Increase in helpdesk first contact resolution rate from 65% to 85%
    • Building a high-performing support team for Microsoft 365 user support
    Microsoft 365 System Administrator Firewall TISAX ISO 27001
  • MVI Group GmbH
    IT System Administrator
    October 2022 - January 2025 (2 years and 3 months)
    Landkreis München, BY, Germany
    • Development and execution of penetration tests and vulnerability scans
    • Training of 700 employees on IT security topics
    • Seven-time TISAX and ISO 27001 certification - ISB
    TISAX ISO 27001 System Administrator Firewall Backup

Recommendations

Be the first to recommend Eros

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • IT - System Electronics Technician (Apprenticeship)
    Municipal Vocational School for Information Technology
    2009
    IT - Systemelektroniker (Ausbildung)
  • Driver's License Class B
    Führerschein Klasse B

Skill set

Categories