Windows System Engineer - Microsoft 365 Expert

About us:

As a leading telecommunications infrastructure provider in the region, CETIN drives digital transformation with a strong presence across Bulgaria, Hungary, Serbia, and Slovakia. Through our subsidiaries, we deliver advanced technology solutions that empower connectivity and enable innovation.
CETIN owns and operates some of the largest telecommunications networks in Bulgaria and Serbia, committed to delivering high-quality, cutting-edge infrastructure that meets and exceeds our customers’ technological needs. Our focus is on developing and deploying world-class telecommunications infrastructure to tackle the dynamic demands of today’s market.
At CETIN, we bring together highly skilled and motivated experts dedicated to excellence. 

Join us to be part of a team shaping the future of telecommunications!

We are seeking a highly skilled Windows System Engineer with advanced expertise in the Microsoft 365 ecosystem to join our dynamic infrastructure team. You will play a key role in designing, implementing, and maintaining secure, scalable, and high-performing Windows-based environments, while driving adoption and optimization of the full O365 stack across the organization.

ROLE OVERVIEW:

• Administer and maintain Windows Server environments (2016/2019/2022), Active Directory, DNS, DHCP, and Group Policy.
• Lead deployment, configuration, and lifecycle management of Microsoft 365 services including Exchange Online, SharePoint Online, Teams, OneDrive, and Intune.
• Implement and manage hybrid identity solutions (Azure AD Connect, SSO, MFA).
• Monitor and optimize system performance, availability, and security.
• Collaborate with security and compliance teams to enforce data protection policies across M365.
• Troubleshoot complex issues across Windows and O365 platforms, ensuring minimal downtime.
• Automate routine tasks using PowerShell and other scripting tools.
• Participate in disaster recovery planning and execution.
• Provide technical guidance and mentorship to junior engineers.

MAIN REQUIREMENTS:

• Proven experience as a Windows System Engineer in enterprise environments.
• Deep knowledge of Microsoft 365 services and administration portals.
• Strong understanding of Active Directory, Azure AD, and hybrid identity models.
• Proficiency in PowerShell scripting for automation and reporting.
• Experience with Exchange migrations, Teams governance, and SharePoint architecture.
• Solid grasp of networking fundamentals and security best practices.
• Excellent problem-solving and communication skills.
• Microsoft certifications (e.g., MS-102, AZ-104, SC-300) are a strong plus.

What we offer:
•    Open working space and flexible working hours

•    Training and development programs
•    25 days paid holiday leave per annum 
•    Laptop, mobile phone and tariff package in line with company policy
•    Private health insurance
•    Recreation or health program 
•    Participation in annual bonus system
•    Competitive terms and conditions
 
Only short-listed candidates will be contacted