Senior System Engineer - Level 2-3 Support - Microsoft 365

For one of our major clients in Geneva, we are looking for a Senior Microsoft Workplace & VDI Engineer to reinforce a skilled Level 2 support team (4 people).

This is a 100% on-site, hands-on role with real ownership. You will act as the technical reference for Microsoft environments, VDI platforms, endpoint security, monitoring, and automation, ensuring a high-performance, secure, and seamless end-user experience.

If you enjoy solving complex issues, optimizing systems at scale, and working close to the business, this role is for you.

Senior System Engineer - Level 2-3 Support - Microsoft 365

Modern Workplace & Infrastructure Support

• Handle Level 2 & Level 3 incidents and requests, with a focus on complex and high-impact issues.
• Support and mentor Level 1 teams, especially on Microsoft services (Outlook, Exchange, Teams).
• Administer and evolve the Omnissa (formerly VMware EUC) ecosystem: Horizon, Workspace ONE, UEM (VDI/DaaS & endpoints).
• Manage and optimize the Microsoft stack: Windows 10/11, Intune/SCCM, Entra ID, Teams.
• Ensure stability, security, and compliance across workstations and mobile devices.

Monitoring, Performance & User Experience

• Administer on-premise monitoring tools for infrastructure health and capacity.
• Deploy and operate user experience monitoring solutions (ControlUp or equivalent).
• Diagnose performance bottlenecks and optimize infrastructure paths.
• Implement automated performance benchmarks and integrate them into monitoring systems.

Identity, Security & Deployments

• Configure and manage Entra ID (Azure AD), access policies, and identity services.
• Administer Microsoft Teams for secure, reliable collaboration.
• Design and execute OS, application, and patch deployment strategies.
• Apply endpoint security and compliance best practices.

Automation & Engineering Practices

• Develop and maintain PowerShell automation scripts.
• Contribute to CI/CD pipelines using GitHub for infrastructure and workplace automation.
• Exposure to Terraform or Infrastructure as Code is a strong plus.
• Apply testing and validation processes to guarantee deployment quality.

Service Management & Knowledge Sharing

• Work with ServiceDesk+ (ITSM) for incident, change, and problem management.
• Participate in MDM / cmdm administration for endpoint and mobile security.
• Produce clear, structured documentation: runbooks, procedures, and technical guides.
• Actively contribute to knowledge sharing across L1/L2/L3 teams.

What we are looking for

Technical Expertise

• Strong background in Microsoft workplace technologies:

  Windows, Intune/SCCM, Teams, Entra ID, Exchange, Outlook.

• Proven hands-on experience with Omnissa / VMware EUC (Horizon, Workspace ONE, UEM).

• Solid expertise in monitoring, troubleshooting, and performance optimization.

• Advanced PowerShell scripting skills.

• Good understanding of CI/CD tools and GitHub; Terraform is a plus.

• Experience with ITSM tools (ServiceDesk+) and MDM solutions.

Experience

• 15+ years of professional experience.

• Strong track record in L2/L3 support within on-premise or hybrid environments.

• Comfortable acting as a technical authority and escalation point.

Languages

• English: Fluent

• French: Strong asset

jiddead65fafr jit0103afr jpiy26afr