Sr. Windows System Administrator (Email Server)

OpenText; Mississauga; On-site; CAD 90,000 - 130,000; Full time

Job summary

OpenText is seeking a seasoned Windows Systems Administrator to manage our Windows Server environment, Hyper‑V, Azure, and a fleet of virtual machines. You will handle mail flow issues, server upgrades, and patching while supporting 24x7 production environments.

The role requires 10+ years of Windows server expertise, strong DNS/AD/SMTP/TLS skills, and experience with deployment tools like Octopus or Ansible. Linux knowledge is a plus.

Qualifications

• 10+ years of Windows server management experience.
• Bachelor’s degree in Information Systems or equivalent.
• Strong knowledge of deployment tools such as Octopus or Ansible.
• Expertise in DNS, Active Directory, SMTP, TLS, load balancing, networking, virtualization, Azure, and SQL.
• Linux knowledge is a plus.
• Ability to manage multiple issues simultaneously with attention to detail.

Responsibilities

• Manage infrastructure of Windows Servers, Hyper‑V/VM Manager, Azure, and a fleet of VMs.
• Troubleshoot SMTP, TLS, and email transport issues.
• Work with F5 load balancers to balance mail flow between servers.
• Assist development as they deploy new services and build applications.
• Troubleshoot IIS and ensure security patches are applied.

Skills

Windows Server mgmt

Detail-oriented

Multitasking

On-call support

DNS/AD/SMTP/TLS

Education

Bachelor's degree in Information Systems

Tools

Octopus Deploy

Ansible

Virtual Machine Manager

IIS

SCOM

Job description

Opentext - The Information Company OpenText is a global leader in information management, where innovation, creativity, and collaboration are the key components of our corporate culture. As a member of our team, you will have the opportunity to partner with the most highly regarded companies in the world, tackle complex issues, and contribute to projects that shape the future of digital transformation.

AI-First. Future-Driven. Human-Centered. At OpenText, AI is at the heart of everything we do—powering innovation, transforming work, and empowering digital knowledge workers. We are hiring talent AI can't replace to help us shape the future of information management. Join us.

OpenText™ Cybersecurity SMB & Consumer solutions help organizations protect their most valuable and sensitive information with products, services, and training. The OpenText Cybersecurity portfolio provides a broad portfolio of data security and data protection solutions that help companies prevent, detect, respond, and recover from the latest cybersecurity threats.

As a global leader in secure information management, OpenText empowers businesses to stay ahead of the ever‑evolving cyber threats. Our Cybersecurity Enterprise portfolio is formidable, offering innovative solutions that safeguard organizations from malicious attacks, data breaches, and cyber vulnerabilities. By joining our team, you’ll be at the forefront of developing and implementing state‑of‑the‑art security technologies, protecting critical assets and sensitive information for clients worldwide.

Your Impact

Are you a Windows Systems Administrator that excels in what you do and can help make our team better? You like working with physical servers, Hyper‑V, VMs and Azure? We do that too. We handle all aspects of mail flow for our spam filtering and Microsoft Exchange products, server upgrades, migrations, and retiring the old hardware. We also work with various email MTAs, SCOM, Virtual Machine Manager, IIS, Octopus for automation, and troubleshooting applications on the servers. On‑call rotation will be required for 24x7x365 support of production environments.

What The Role Offers

• Manage infrastructure of Windows Servers, Hyper‑V/Virtual Machine manager, Azure, and a fleet of VMs.
• Troubleshooting SMTP, TLS, and various email transport issues.
• Working with F5 load balancers to ensure mail flow is evenly weighted between the servers.
• Assisting our software development department as they deploy new services and build new applications.
• Troubleshoot IIS issues.
• Responsible for security and patching of the systems.

What You Need To Succeed

• Highly detail-oriented with ability to manage multiple issues simultaneously.
• 10+ years of Windows server management experience.
• Bachelor’s degree in Information Systems or equivalent experience.
• Strong knowledge of enterprise deployment tools such as Octopus or Ansible.
• Expertise in DNS, Active Directory, SMTP, TLS, load balancing, networking, virtualization, cybersecurity, Azure, and Microsoft SQL.
• Working knowledge of Linux is a plus.

One last thing

OpenText is more than just a corporation, it's a global community where trust is foundational, the bar is raised, and outcomes are owned. Join us on our mission to drive positive change through privacy, technology, and collaboration. At OpenText, we don't just have a culture; we have character. Choose us because you want to be part of a company that embraces innovation and empowers its employees to make a difference.

OpenText's commitment to diversity and inclusion surpasses legal requirements, evident in our Equal Employment Opportunity Statement of Policy which promotes a respectful and empowering environment for employees of all backgrounds, culture, national origin, race, color, gender, gender identification, sexual orientation, family status, age, veteran status, disability, religion, or other basis protected by applicable laws. If you need assistance and/or a reasonable accommodation due to a disability during the application or recruiting process, please submit a ticket at Ask HR. Our proactive approach f...