freiberufler Senior Infrastructure Engineer | Windows Server • VMware vSphere • Cloud | Enterprise Environments auf freelance.de

Senior Infrastructure Engineer | Windows Server • VMware vSphere • Cloud | Enterprise Environments

zuletzt online vor wenigen Tagen
  • auf Anfrage
  • 85551 Kirchheim bei München
  • auf Anfrage
  • en  |  it  |  de
  • 13.05.2026
  • Contract ready

Kurzvorstellung

Umfassende Erfahrung im IT-Bereich, hatte mehrere Schlüsselpositionen in großen IT-Unternehmen inne. Technisches Wissen und Erfahrung in Bereichen wie Virtualisierung, Windows-Betriebssysteme und Netzwerke.

Geschäftsdaten

 Gewerbetreibend
 Steuernummer bekannt
 Berufshaftpflichtversicherung aktiv

Qualifikationen

  • Amazon Web Services (AWS)
  • Computer Engineering9 J.
  • Incident-Management9 J.
  • Kundenberater1 J.
  • Microsoft Azure
  • Microsoft Windows (allg.)
  • Techniker (allg.)
  • Vmware ESX Server10 J.
  • Vmware Vsphere16 J.
  • Windows Server (allg.)16 J.

Projekt‐ & Berufserfahrung

Server Operations (Contractor)
Page Contracting GmbH, München
7/2025 – offen (1 Jahr)
Maschinen-, Geräte- und Komponentenbau
Tätigkeitszeitraum

7/2025 – offen

Tätigkeitsbeschreibung

Technical Environment: Windows Server 2012 R2/2016-2025; VMware vSphere 6.7/7.0, ESXi 6.7/7.0.3; vSAN 6.7; Fedora 38, Ubuntu 22.04; Windows 10/11; Azure, AWS; CyberArk; Ivanti Ticketing System

Languages: German (50%), English (50%)

Global environment: 58 ESXi hosts, 700+ VMs across Europe, China, Singapore, UK & US

• Day‑to‑day operations for global Windows Server & VMware infrastructure
• VMware patching & lifecycle management (ESXi, vSAN, vCSA)
• Upgraded VMware environment from 6.7 → 7.0.3
• Built Windows Server 2019/2022 & Linux systems (Fedora, Ubuntu)
• Performed 100+ Windows Server 2012 R2 → 2019 upgrades
• Installed HP ProLiant DL385 Gen10 v2 servers for ESXi refresh
• Implemented global DFS‑R replication (DE, CN, HU, SG, US)
• Built Windows Server 2022 in Azure
• Provisioned & decommissioned Windows/Linux servers (ITIL process)
• Resolved VMware certificate issues & created custom VMware alerts
• Updated BIOS/ILO firmware across physical servers
• Created documentation for DFS‑R, License Servers, and operational processes
• Ensured CMDB accuracy across global infrastructure

Eingesetzte Qualifikationen

Kundenberater

Senior Systems Administrator (Contractor)
Bechtle Onsite Services GmbH, Munich, Germany, München
8/2015 – 3/2025 (9 Jahre, 8 Monate)
Dienstleistungsbranche
Tätigkeitszeitraum

8/2015 – 3/2025

Tätigkeitsbeschreibung

Technical Environment: Windows Server 2008, Windows Server 2008 R2, Windows Server 2012 R2; VMware vSphere 5.5; Windows 7 Professional

Languages: German (80%), English (15%), Italian (5%)

• 3rd‑level support for Windows Server & Web Services
• Active Directory administration (accounts, groups, permissions)
• Managed DFS migrations (2008 R2 → 2012 R2)
• Managed WSUS infrastructure for German server landscape
• VMware operations for 48+ ESXi hosts
• Provisioned new VMs, updated templates, managed LUN storage (HP/NetApp)
• Created & maintained IIS websites, SSL renewals
• Basic SQL Server support (DB creation, permissions)
• Decommissioned physical & virtual servers
• Documented technical processes & operational procedures

Eingesetzte Qualifikationen

Computer Engineering, Incident-Management, Vmware ESX Server, Vmware Vsphere, Windows 7, Windows Server (allg.)

Senior Consultant - WIST Windows
European Patent Office, München
7/2014 – 8/2015 (1 Jahr, 2 Monate)
Soziale Einrichtungen
Tätigkeitszeitraum

7/2014 – 8/2015

Tätigkeitsbeschreibung

Technical Environment: Windows 2003 R2 Server, Windows Server 2003, Windows Server 2008 R2, Windows Server 2012 R2; VMware vSphere 5.5

• Member of Windows Server team providing 3rd level support for all Server related issues
• Utilise System Center Operations Manager (SCOM) for Server monitoring and alerting
• Managing Server hardware resources for Virtual Machines i.e. upgrading and replacing components
• Server maintenance, implementation and support resolving reported issues in an effective manner
• Server provisioning - creation of Virtual Machines utilising Server templates, scripts and other automated methods
• Server decommissioning using standard procedures to ensure complete removal of server
• Responsible for complete system builds, upgrades, migrations, and also patch management using WSUS (Windows Server Update Services) and other tools
• Day-to-Day support and maintenance of VMware Infrastructure environment, dealing with various technical issues/requests for 70+ ESXi Hosts and 2000+ VMs
• Managing Highly Availability servers including Failover Clustering and Network Load Balancing, specifically for Microsoft SQL Server Clusters
• Following ITIL standards during all operational activities (e.g. server upgrades, installations, and other changes)
• Preparation and maintenance of documentation for Technical Procedures and Standards
• Active Directory Group Policy Implementation, Service Principal Names (SPNs), Security, IIS Hosting Server Farm, IIS Migration Projects, Assisting with SSL Certificate enrolment and renewals

Eingesetzte Qualifikationen

ITIL, Windows Server (allg.), IIS, Vmware Vsphere, Vmware ESX Server

Windows Engineer
European Patent Office, München
5/2008 – 6/2014 (6 Jahre, 2 Monate)
Soziale Einrichtungen
Tätigkeitszeitraum

5/2008 – 6/2014

Tätigkeitsbeschreibung

• Designed and implemented Desktop Virtualization Infrastructure using VMware View
• Technical Lead for Office-wide “PTHW” & “Hotelling” Projects which have now become Production Services for the organisation
• Designed and Implemented the “Wake-On-LAN” solution to remotely power-on Workstations in the office
• Established Technical Documentation for relevant Projects as well as documenting Troubleshooting guidelines for Service Desk Personnel
• Technical IT Trainer delivering technical courses to 600+ users
• Logistical contact which required liaising with hardware vendors & suppliers
• Assigned Technical Lead for Web Browser Projects (including Internet Explorer & Firefox)
• Windows Server Engineering - Group Policies (GPO) Implementation, Service Principal Names (SPNs), Security, Active Directory, IIS 7.5 Hosting Server Farm, Creation of VMware Virtual Machine Images
• Providing Support and assistance with IIS 6 environments
• Technical Lead for implementation of IIS 7.5 environments
• Architect for Hyper-V POC (Proof of Concept) environment to deliver Virtual Desktops to external partners
• Provider of 3rd Level Technical Support

Eingesetzte Qualifikationen

ITIL, Windows XP, Windows Server (allg.), Windows 7, IIS, IT-Techniker (allg.), Vmware Vsphere, Arbeitsstatione

Network Technician
European Patent Office, München
1/2007 – 4/2008 (1 Jahr, 4 Monate)
Soziale Einrichtungen
Tätigkeitszeitraum

1/2007 – 4/2008

Tätigkeitsbeschreibung

• Major contributor for the Cable Exchange Project replacing existing network cable
• Installed 3COM wireless Access Points for the Cable Exchange Project
• Configured and implemented Nortel WLAN 2380 Security Switches and Nortel Access Points
• Part of Proxy Server Project team for selecting replacement Proxy solution
• Implemented Cisco 3750 and Catalyst 4948 switches replacing Avaya switches
• Provided day-to-day network support for 2000+ users
• Monitored network devices using CiscoWorks
• Point of Contact for the patching of 40+ network cabinets in five buildings across the Munich offices
• Monitored network for rogue Access Points
• Cable preparation for Cisco 3560 Access Switches and Cisco 6500 Distribution Switches

Eingesetzte Qualifikationen

Windows XP, CiscoWorks LAN Management Solution (LMS), Cisco Switch

Field Test Engineer
AGERE SYSTEMS Deutschland, München
9/2006 – 12/2006 (4 Monate)
Telekommunikation
Tätigkeitszeitraum

9/2006 – 12/2006

Tätigkeitsbeschreibung

• Lead Field Test team in Key Performance Indicator tests
• Created Field Test PC image for carrying out Key Performance Indicator tests
• Documented structure of Key Performance Indicator tests
• Automated some Key Performance Indicator tests
• Introduced reporting structure for Key Performance Indicator tests
• Used networking tools for analysis of tests

Eingesetzte Qualifikationen

Windows XP, WLAN (Wireless Local Area Network), GSM/GPRS, HSDPA (High Speed Downlink Packet Access)

Security Engineer
HEWLETT-PACKARD EMEA GmbH, München
10/2004 – 4/2006 (1 Jahr, 7 Monate)
High-Tech- und Elektroindustrie
Tätigkeitszeitraum

10/2004 – 4/2006

Tätigkeitsbeschreibung

• Delivered EMEA wide TACACS Authentication project, saving Hewlett-Packard in excess of $69K
• EMEA Project Manager for SNMP Community Strings project, delivered 2 months ahead of schedule
• Developed “Security Alert Process” for security alerts which was adopted globally within Hewlett-Packard
• Delivered training to EMEA wide audiences on various technologies
• Provided network security and support for critical systems in EMEA
• EMEA Point of Contact for internal investigations relating to misuse of IT resources
• EMEA Point of Contact for Infosec (Information Security) team, assisting with security tests

Eingesetzte Qualifikationen

Netzwerk-Sicherheit, Windows XP

Senior Systems Analyst
HEWLETT-PACKARD EMEA GmbH & COMPAQ COMPUTERS EMEA, München
4/1999 – 9/2004 (5 Jahre, 6 Monate)
High-Tech- und Elektroindustrie
Tätigkeitszeitraum

4/1999 – 9/2004

Tätigkeitsbeschreibung

• 3rd level support of Internet Services such as DNS, Firewall and Web Hosting
• Architect and project lead for Microsoft ISA Server design and implementation
• Author of “Global ISA Server” document
• Implemented several web filtering solutions such as Websense and Surf Control
• Key player in the implementation and support of Checkpoint Firewall-1 (NG) and Cisco PIX Firewall’s
• Webmaster for internal network web site
• Produced management reports for bandwidth usage in EMEA
• Supported Cisco Load Balancer’s and Cisco Content Services Switches
• Handled Global Partner Network issues, provided 1st level support
• Received awards at Compaq Computers for outstanding achievement in 2000, 2001 and 2002

Eingesetzte Qualifikationen

Check Point (allg.), Cisco Firewalls, DNS

Technical Support Specialist
COMPAQ COMPUTERS & TANDEM COMPUTERS EUROPE, Uxbridge
10/1994 – 3/1999 (4 Jahre, 6 Monate)
High-Tech- und Elektroindustrie
Tätigkeitszeitraum

10/1994 – 3/1999

Tätigkeitsbeschreibung

• Team Leader of the Mobile Business Environment (MoBE) support team
• Created standard laptop (PC & Apple Mac) images for users in EMEA
• Managed the “hot swap” setup for the replacement of laptops
• Organised and coordinated training workshops across Europe
• Provided weekly reports for management
• Point of Contact for vendors and suppliers
• Awarded “Best Technical Support Specialist” in EMEA in 1995

Eingesetzte Qualifikationen

Apple Mac Systems, AppleTalk

Zertifikate

VMware Certified Professional VCP5 (VCP44769)
2012
VMware Certified Professional VCP4 (VCP44769)
2011
VMware Certified Professional VI3 (VCP44769)
2010
found in certificate text 3 Windows 2008 Network Infrastructure, Configuring (MCP ID: [...])
2010
found in certificate text 4 Windows 2008 Active Directory (MCP ID: [...])
2010
found in certificate text 5 ITIL V3 Foundation (Cert No: [...])
2009
found in certificate text 6 CompTIA Network+ (Network+ ID: [...])
2006
found in certificate text 7 CWNP (CWNP [...])
2005
found in certificate text 8 CCNA (Cisco ID: [...])
2004

Ausbildung

BSc Computer Science with Management Science, University of Luton, UK
BSc Computer Science with Management Science
1992
Luton, UK
OND (Ordinary National Diploma) Computer Studies, University of Luton, UK
Ordinary National Diploma
1989
Luton, UK

Über mich

Ich arbeite gerne mit Menschen zusammen, die dieselbe Einstellung haben: „Lasst uns die Arbeit erledigen, voneinander lernen und sicherstellen, dass wir unseren Kunden den besten Service bieten.“

Weitere Kenntnisse

Core Skills:
• Windows & Virtualization (Primary Focus)
• Windows Server 2003–2025
• Active Directory, GPOs, DFS‑R
• VMware ESXi 5.x–7.x, vSphere 5.x–7.x
• vCSA upgrades, vSAN 6.7/7.0
• VM provisioning, templates, snapshots, resource optimisation

Cloud
• Microsoft Azure (VM builds, hybrid integration)
• AWS (basic)
• Docker (basic)

Infrastructure & Operations
• Server builds (Windows & Linux)
• Patch management (WSUS, VMware)
• CMDB maintenance
• IIS 7.5/8.5, SSL certificates
• SQL Server (basic DB creation & permissions)

Hardware & Storage
• HP ProLiant DL360/380/385 G9–G11
• Dell PowerEdge
• HP P2000, NetApp (basic)
• BIOS/ILO updates

Networking
• Cisco, TCP/IP, DNS, DHCP
• Illumio (basic)
• SFTP, SSH, RDP

Tools
• CyberArk, ServiceNow, Matrix42, Ivanti
• Git/GitHub
• Wireshark
• VMware Workstation, VirtualBox

Scripting
• PowerShell (basic)

Persönliche Daten

Sprache
  • Englisch (Muttersprache)
  • Italienisch (Fließend)
  • Deutsch (Gut)
Reisebereitschaft
auf Anfrage
Arbeitserlaubnis
  • Europäische Union
Home-Office
unbedingt
Profilaufrufe
3849
Alter
55
Berufserfahrung
31 Jahre und 8 Monate (seit 10/1994)
Projektleitung
3 Jahre

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