Senior Systems Administrator

We are looking for an experienced Senior Systems Administrator to join a collaborative and innovative IT team on a 6-month contract basis, with the possibility of transitioning into a permanent role.

This position is suited for a seasoned IT professional with strong enterprise infrastructure experience who can balance day-to-day operational support with strategic technology initiatives. The successful candidate will be responsible for managing, securing, and optimizing critical IT systems across hybrid environments, including both cloud-based and on-premises infrastructure.

Working as part of a distributed technology team, you will support infrastructure improvements, lead technical initiatives, and contribute to the ongoing evolution of enterprise platforms, including messaging, backup, recovery, and virtualization solutions.

This organization values teamwork, inclusion, and professional development, creating an environment where employees are encouraged to collaborate, share knowledge, and drive meaningful improvements.

Key Responsibilities

• Manage and support enterprise infrastructure, including Active Directory, Exchange, Microsoft 365, cloud platforms, and virtual environments
• Provide advanced Level 3 technical support for production and non-production systems
• Monitor, maintain, and enhance backup, disaster recovery, and storage environments
• Investigate and resolve system vulnerabilities while supporting ongoing security improvements
• Participate in and lead technology projects, system upgrades, and infrastructure deployments
• Troubleshoot and manage email systems, including message routing, delivery, and configuration issues
• Create and maintain technical documentation, operational procedures, and disaster recovery documentation
• Coordinate with external vendors and service providers to ensure effective delivery and support
• Provide mentorship and technical guidance to junior IT team members
• Participate in operational support activities and escalation coverage when required

Required Qualifications & Experience

• Extensive experience supporting and administering Windows Server environments
• Strong hands-on knowledge of Microsoft Exchange administration, including on-premises environments
• Proven experience working with virtualization technologies and hybrid infrastructure models
• Experience supporting Microsoft cloud solutions, including Azure, Microsoft 365, and Teams
• Practical experience with enterprise backup, recovery, and data protection solutions
• Strong troubleshooting, analytical thinking, and problem-solving abilities
• Excellent communication skills with the ability to manage competing priorities
• Experience working within formal IT change management processes and environment

Must-Haves

• 7–10 years Windows Server administration experience
• 7–10 years Exchange (on-prem) administration