David NANZER
M365 System Administrator

Education

  • 2024/2021/2017

    Training for Microsoft Certifications

    ITTA

  • 2018 - 2020

    Federal Diploma in IT Systems and Network Technology

    IDEC

  • 2005-2010

    Apprenticeship in IT (CFC)

    SIG, MIB Switzerland

  • 2003

    Language Stay in Ireland

Certifications

  • 2023

    Microsoft 365 Certified: Administrator Expert

    MS-100 + MS-101

  • 2021

    Microsoft 365 Certified: Modern Desktop Administrator Associate

    MD-100 + MD-101

  • 2017

    MCSA: Office 365

    70-346 + 70-347

  • 2017

    Administering System Center Configuration Manager and Intune

    70-696

  • 2017

    MCSA: Windows Server 2012

    70-410 + 70-411 + 70-412

Languages

  • French
  • English
  • Spanish



Profile

An IT professional with over 15 years of experience, I stand out for my in-depth expertise in managing Microsoft 365 environments, Windows infrastructures, and networks.

Thanks to my adaptability, strong work ethic, and results-oriented mindset, I excel in solving complex incidents, implementing innovative solutions, and coordinating cross-functional teams.

Trilingual (French, English, Spanish), I am comfortable in multicultural and demanding environments, where my technical and interpersonal skills help optimize performance and user satisfaction.

Professional Experience

April 2022 - August 2024
Numendo SA

Microsoft 365 Consultant & Senior ICT Engineer at Rolex
(Feb. 23 - Jan. 24)

  • Managed email-related topics (Exchange Online, Exchange On-Prem, ClearSwift).
  • Administered and maintained secure communication services using the KiteWorks (Accellion) technology-based solution.
  • Coordinated with the outsourcing partner (Swisscom) for infrastructure management.
  • Deployed updates for 250 applications managed by the team.
  • Monitored service and incident resolution requests.
  • Applied Microsoft best practices and ITIL methodology.
  • Provided Level 2 and Level 3 support.
  • Coordinated inter-team changes implemented by the team.
  • Developed and implemented procedures.

Microsoft 365 Consultant & Senior ICT Engineer at Mazars CH
(April 22 - Feb. 23)

  • Coordinated with the outsourcing partner (Swisscom) for infrastructure management.
  • Maintained infrastructure outside Swisscom's scope.
  • Network: daily operations, troubleshooting, and incident resolution (switches/routers/printers), AlwaysOn VPN.
  • Installed, reset, and configured mobile devices (Intune).
  • Monitored service and incident resolution requests, following Microsoft best practices.
  • Conducted audits and provided recommendations for Azure AD (M365) management.
  • Provided Level 2 and Level 3 support to business users and VIPs.
  • Endpoint Manager / Intune: Coordination and troubleshooting after deployments.
February 2022
Vacances et Loisirs SA
Temporary Assignment

System Administrator

  • Migration to Microsoft 365
  • Implementation of a Hybrid infrastructure
  • Creation of "Autopilot" profiles in Endpoint Manager (Intune)
  • Configuration of Conditional Access policies
  • Software packaging for business applications in Endpoint Manager
  • Transfer of email content from the previous hosting provider
  • Tenant management
Jan. 2018 - Jan. 2022
Georg Fischer
Machining Solutions

ICT Coordinator

  • Technical coordination with service providers.
  • Active Directory management.
  • Project management.
  • Implementation of workstation migration procedures.
  • Inventory management.
  • Patch panel verification.
  • User support for mobility solutions.
  • Workstation installation.
  • First and second-level troubleshooting and incident resolution.
  • Needs assessment and equipment ordering.
  • User training.
  • User support.
Dec. 2015 - March 2017
Darest SA

Technician at Union Bancaire Privée
(July 2016 - March 2017)

  • Used SCCM for various reports.
  • Managed secure badge-based printing system (UniFlow Canon).
  • Implemented workstation migration procedures.
  • First and second-level troubleshooting and incident resolution.
  • Used ticketing tools (Remedy).

Technician at Japan Tobacco International
(Dec. 2015 - June 2016)

  • Used ticketing tools (ServiceNow).
  • Provided user support for mobility solutions.
  • Basic troubleshooting for issues related to the Uniflow solution.
  • First and second-level troubleshooting and incident resolution.
May 2015 - August 2015
IXION SERVICES

First-Level Help Desk Specialist at PICTET

  • Communicated with second-level support for ticket escalation.
  • First-level incident resolution via remote access.
  • Used ticketing tools (Remedy).
Oct. 2014 - March 2015
HRC Synoptique

Technician at CACEIS (Switzerland) SA
(Jan. - March 2015)

  • Workstation installation.
  • Management of failures, incidents, and IT service requests.
  • First and second-level troubleshooting and incident resolution.
  • Used ticketing tools (Remedy).

Migration Technician for Geneva University Hospitals
(Oct. - Dec. 2014)

  • Migration from Windows XP to Windows 7.
  • Added workstations to Active Directory.
  • Used VitalQIP (DHCP server) for workstation declaration across different subnets.
  • Incident resolution related to migration.
  • User data migration.
Dec. 2013 - Sep. 2014
Vacances et Loisirs SA
Temporary Assignment

System Administrator

  • Needs assessment and equipment ordering.
  • Installation and configuration of Backup Exec 2014.
  • Creation of a new Active Directory structure.
  • Configuration of roles in Windows Server 2008 (AD, File Services, WSUS, Print Services, WDS, MDT).
  • Patch panel restructuring.
  • User support.
March 2012 - June 2012
Kidstone for Swisscom
Temporary Assignment

Migration Technician at Credit Suisse

  • Migration from Windows XP to Windows 7.
  • Workstation cabling.
  • User support.
  • Incident resolution related to migration.
Oct. 2010 - Nov. 2011
MTF Quadra

Technician at Procter & Gamble: 12 ½ months

  • Second-level troubleshooting and incident resolution.
  • Used failure management tools and installed laptops for new users.
  • Ensured compliance with IT procedures through diplomatic communication.

Technician at ICRC: 1 ½ months

  • Installed computers for new users.
  • Managed failures and incidents.
  • Verified patch panels.
  • Connected IP phones.
  • Wired computers after an internal relocation.
2005 - 2010
IT Apprenticeship

Services Industriels de Genève (1,700 employees)

Various internal internships


MIB Suisse (IT service provider for CERN)

  • Prepared computers for clients.
  • Responsible for hardware failures on desktops, laptops, and HP servers.
  • Replaced various hardware components on laptops, desktops, and servers.

Professional Skills

Microsoft 365

Exchange Online

Entra ID

Endpoint Manager (Intune)

Teams

SharePoint

Conditional Access

PowerShell


Other Skills

Project Management

Windows 10 Client Environments

Windows Server

Microsoft Exchange OnPrem

Ticketing Tools

Windows Server Services (SCCM, Active Directory, DNS, DHCP, etc.)