David NANZER
M365 System Administrator

Contact Information

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

Senior Microsoft 365 & Windows Server Engineer


Over 15 years of experience in enterprise and NGO environments, with a strong focus on Microsoft 365 administration, identity and access management, endpoint management, IT security, and automation. Structured approach combined with strong cross‑functional analysis and complex problem‑solving skills, oriented toward reliability and best practices.

Professional Experience

April 2026 – May 2026
Numendo SA

Senior ICT Engineer – Microsoft 365 & Windows Server (MSF, Temporary assignment))

  • Application packaging and deployment using MECM (SCCM) with the PSAppDeployToolkit framework
  • Level 2 / Level 3 support and incident management in line with ITIL, Microsoft best practices, and IT security standards
  • Incident analysis and troubleshooting within MECM (SCCM) environments
  • Coordination with ELCA on infrastructure-related activities, including Windows Server environments
  • PowerShell scripting and automation to improve operational efficiency and administrative processes
  • Use of ticketing and incident management tools (TopDesk)
August 2025 – Present

Parental leave (continuous professional development)

Parental leave period combined with continuous professional development and technology watch focused on Microsoft 365 administration, security, identity management, and adoption of new features and best practices, in order to remain up to date in a constantly evolving SaaS and IT environment.

April 2022 - August 2024
Numendo SA

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

  • Manage email-related topics (Exchange Online, Exchange On-Prem, ClearSwift).
  • Management and maintenance of secure communication services using KiteWorks (Accellion).
  • Coordination with the outsourcing partner (Swisscom) for infrastructure management.
  • Deployment of updates for 250 applications managed by the team.
  • Monitoring service and incident resolution requests.
  • PowerShell scripting to improve administrative processes
  • Apply Microsoft best practices and ITIL methodology.
  • Provide Level 2 and Level 3 support.
  • Creation and coordination of inter-team changes.
  • Develop and implement procedures.

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

  • Coordination with the outsourcing partner (Swisscom) for infrastructure management.
  • Maintain infrastructure outside Swisscom's scope.
  • Network: daily operations, troubleshooting, and incident resolution (switches/routers/printers), AlwaysOn VPN.
  • Installation, reset, and configuration of mobile devices (Intune).
  • Tracking service requests and incident resolution in accordance with Microsoft best practices.
  • Perform audits and provide recommendations for Azure AD.
  • Provide support to business users and VIPs (L2 and L3).
  • Endpoint Manager / Intune: Coordination and troubleshooting.
February 2022
Vacances et Loisirs SA
Temporary Assignment

Systems Administrator – Microsoft 365 & Windows Server

  • 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

Systems Administrator / 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

IT Support & Systems Technician at Union Bancaire Privée
(July 2016 – March 2017)

  • Usage of SCCM for various reports.
  • Manage secure badge-based printing system (UniFlow Canon).
  • Implement workstation migration procedures.
  • First and second-level troubleshooting and incident resolution.
  • Use of ticketing tools (Remedy).

IT Support & Systems Technician at Japan Tobacco International
(Dec. 2015 – June 2016)

  • Usage of ticketing tools (ServiceNow).
  • Provide 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

IT Support & Systems Technician at PICTET

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

IT Support & Systems 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.
  • Use of ticketing tools (Remedy).

IT Support & Systems Technician for Geneva University Hospitals
(Oct. – Dec. 2014)

  • Migration from Windows XP to Windows 7.
  • Add workstations to Active Directory.
  • Usage of 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 IT 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

IT Support & Systems Technician at Procter & Gamble: 12 ½ months

  • Second-level troubleshooting and incident resolution.
  • Incident management & laptop installation.
  • Use diplomatic communication to ensure compliance with IT procedures.

IT Support & Systems Technician at ICRC: 1 ½ months

  • Setup of computers for new users.
  • Incident management.
  • Checks on patch panels.
  • Installation of IP phones.
  • Re-configuration of computers after internal move.
2005 – 2010
IT Apprenticeship
Systems & Networks

Services Industriels de Genève (1,700 employees)

Various internal internships

MIB Suisse (IT service provider for CERN)

  • Customisation of computers for customers (labeling/tagging).
  • In charge of hardware failures on HP desktops, laptops, and servers.

Technologies & Professional Skills

Microsoft 365

Full tenant administration: email management via Exchange Online and Exchange On-Premises, identity security with Entra ID (Azure AD) and Conditional Access policies, endpoint deployment and management via Endpoint Manager (Intune) including Autopilot and application packaging. Proficiency with SharePoint, Teams and M365 collaboration tools. Advanced automation and scripting with PowerShell.

Windows Infrastructure & Networking

Administration of Windows Server (2008–2022) with roles including Active Directory, DNS, DHCP, WSUS, WDS, MDT, and Print Services. On-site messaging with Exchange On-Premises. Deployment and migration of Windows 10/11 workstations. Network infrastructure management: switches, routers, AlwaysOn VPN, patch-panel verification, cabling, and advanced DHCP management via VitalQIP. Use of SCCM for application deployment and reporting.

Security & Secure Messaging

Management of secure messaging solutions including ClearSwift and KiteWorks / Accellion. Configuration of M365 security and compliance policies. Implementation of Conditional Access and multi-factor authentication. Administration of the secure printing system UniFlow Canon.

Project Management & ITSM

IT project coordination, vendor and supplier management. N1/N2/N3 user support, incident management following ITIL best practices and Microsoft guidelines. Proficiency with ticketing tools Remedy, ServiceNow and HP Service Manager. Technical procedure writing, inventory management, and IT equipment procurement.

Migration & Modernisation

Leading workstation modernisation projects: Windows Client upgrades (XP → 7 → 10/11) at scale in banking and hospital environments, and migration to Microsoft 365 including mailbox migration, Autopilot setup, and Intune deployment. Installation and configuration of backup solutions including Backup Exec 2014. Hardware maintenance on HP desktops, laptops, and servers.