Senior IT Infrastructure Specialist

4 days ago

Oslo, Oslo County, Norway Yinson Full time
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)
  • Manage third-party integrations with Exchange Online for backup and archiving
  • Manage Active Directory services
  • Support hybrid identity environments (Azure AD Connect/Entra ID) and ensure secure IAM workflows.
Servers & Automation
  • Manage the lifecycle of internal and external SSL/TLS certificates, aiming for fully automated renewal processes.
  • Manage Windows and Linux based servers
  • Write, maintain, and version-control PowerShell scripts to automate provisioning, configuration management, and reporting.
  • Leverage AI/LLM tools to optimize scripts, accelerate troubleshooting, and improve operational workflows.
General IT & Support
  • Provide Tier-3 technical support for complex infrastructure issues.
  • Create and maintain high-quality technical documentation for architecture, configurations, and disaster recovery procedures.
  • Travel globally when required to support Yinson Production's international operations.
Qualifications
Essential
  • 7+ years in IT Infrastructure
  • Deep technical knowledge of SBC platforms (specifically Cisco CUBE, AudioCodes, or Ribbon) and SIP protocol analysis.
  • Enterprise-level experience with Microsoft Exchange, Active Directory, Certificate management and Microsoft Teams
  • Advanced proficiency in PowerShell scripting
  • Professional proficiency in written and verbal English.
  • Ability and willingness to work independently in a multi-cultural, global environment.
Desirable
  • Experience troubleshooting Linux-based appliances or servers.
  • Exposure to observability & monitoring tools (Zabbix, Grafana, SolarWinds, etc.).
  • Any relevant IT certifications (MS-700, MS-720, CCNP Collaboration etc.).
  • Experience in Shipping, Oil & Gas, or similar heavy industries.

While applications will be reviewed continuously, the final deadline is January 18th 2026. Feedback will be provided after the application period has closed.

If you want to team up with us as we dream and stride towards a better tomorrow – we would love to hear from you

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