System Administrator – Microsoft 365 Specialist - Tietoevry Create (m/f/d)

A part of global technology organization Tietoevry, MentorMate creates durable technical solutions that deliver digital transformation at scale by blending strategic insights and thoughtful design with brilliant engineering. With mature and established practices in enterprise web and mobile development, quality engineering, technical architecture, human-centered design, cloud, DevOps, data, and analytics, the company provides its people with the opportunity to work on impactful, global projects for recognizable brands. We value every team member and share our success through flexible working models, competitive pay and benefits, and advancement opportunities in a team of thousands of experts located around the globe.  

About the role   

We are looking for a skilled and proactive System Administrator with deep expertise in Microsoft 365 administration to join our team. The ideal candidate will have hands-on experience managing and supporting Microsoft 365 E5 services, including Entra ID (Azure AD), Intune, Exchange Online, SharePoint Online, Microsoft Defender, and other related technologies. This role requires strong troubleshooting and problem-solving skills, a customer-focused approach. You will play a key role in ensuring the smooth operation of our Microsoft 365 environment and providing reliable support to end users.

Responsibilities

• Administer and maintain Microsoft 365 services, including:

  • Entra ID (Azure Active Directory)

  • Microsoft Intune (device and application management)

  • Exchange Online (mail flow, mailbox management, policies)

  • SharePoint Online (site provisioning, permissions, content management)

  • Microsoft Defender (Endpoint, Identity, Office 365 security)

• Monitor system performance, availability, and security across Microsoft 365 services

• Provide Tier 2/3 support to end users, troubleshooting and resolving technical issues efficiently

• Implement and maintain compliance policies, conditional access, and security baselines

• Collaborate with IT teams on infrastructure and cloud initiatives to ensure smooth operations

• Document procedures, configurations, and troubleshooting steps for knowledge sharing

• Stay up to date with Microsoft 365 updates, new features, and best practices to optimize service delivery

Requirements

• Proven experience in Microsoft 365 administration, preferably 3+ years

• Strong understanding of cloud identity, device management, and collaboration tools

• Experience with PowerShell scripting for automation and administration

• Excellent troubleshooting and problem-solving skills

• Strong English communication skills, both written and verbal

• Relevant Microsoft certifications (e.g., MS-102, SC-300, MD-102) are a plus

• Experience working with hybrid environments (on-premises AD + Azure AD)

• Knowledge of Microsoft Purview, Defender XDR, and other compliance/security solutions

• Ability to work independently, manage multiple priorities, and deliver results

• Customer-focused mindset with strong teamwork and collaboration skills

At Tietoevry, we believe in the power of diversity, equity, and inclusion. We encourage applicants of all backgrounds, genders (m/f/d), and walks of life to join our team, as we believe that this fosters an inspiring workplace and fuels innovation. Our commitment to openness, trust, and diversity is at the heart of our mission to create digital futures that benefit businesses, societies, and humanity.

Diversity, equity and inclusion (tietoevry.com)