Senior IT Infrastructure Specialist

**Date Posted**:18 Dec 2025- **Legal Entity**:Yinson Production AS- **Job Function**:IT- **Location**:Oslo Office- **Employment Type**:Permanent-
- **Exciting opportunity in Yinson Production AS**- We are looking for an experienced Senior Engineer to manage the stability, performance, and security of our IT infrastructure. This is a Tier-3 role requiring expertise in VoIP alongside strong Microsoft ecosystem management (Exchange Online, Active Directory, Certificate Management etc.).- You will bridge the gap between on-premises and cloud solutions while driving automation initiatives.
** Key responsibilities**- Voice & Telephony- Administer and troubleshoot enterprise voice systems, specifically Session Border Controllers (SBCs), PABX/VoIP solutions, and the Microsoft Teams Phone ecosystem.
- Manage relationships with global telecom providers for trunking and number management.-
- Microsoft systems- Manage Exchange Online (mail flow rules, retention policies, archiving)
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