We are looking for a Voice/VoIP & MS Teams Voice Expert (x|f|m) for the IT Foundation Services department. In this role, you will contribute to the operation, stability and continuous evolution of our global communication infrastructure while working with modern cloud-based telephony technologies.

In this role, responsibility includes our global voice infrastructure leveraging Operator Connect, Direct Routing and Cloud PBX capabilities within Microsoft Teams Voice. The focus is on ensuring high availability, security and exceptional call quality while addressing complex telephony challenges in close collaboration with security and infrastructure teams.

This position is available for full-time. It is a hybrid role requiring some days on site at our site in Madrid (Spain) or M’hamedia (Tunisia) with the opportunity to work some days remotely.

Grow With Us – Your Responsibilities

Operate, maintain and continuously enhance the integral Microsoft Teams Voice infrastructure, including Call Queues, Auto Attendants, Direct Routing and Operator Connect




Ensure a high-quality end user experience with a focus on usability, performance and stability of voice solutions
Manage SIP trunking and coordinate with telecom carriers across the EMEA, AMER and APAC regions
Support the implementation and operation of voice security controls, QoS measures and compliance requirements
Automate administrative tasks through PowerShell scripting
Troubleshoot and resolve complex telephony-related issues on Apple endpoints and mobile devices as 3rd level support
Coordinate closely with workplace services, security teams and end users to align voice solutions and operational requirements
Evaluate and implement new technologies, features and best practices within the Microsoft Teams Voice ecosystem
Document configurations, processes and platform standards to ensure transparency and scalability

What Will Convince Us

Academic degree with a focus on Information Technology or a comparable qualificati

📌 Voice/VoIP & MS Teams Voice Expert (x|f|m) (Madrid)
🏢 Sartorius
📍 Madrid