Senior System Administrator (Linux/Unix)

Who we are

Gildan is a leading apparel manufacturing company, with a strong portfolio of brands, including Gildan®, American Apparel®, Comfort Colors®, GOLDTOE®, Peds®, and under the Under Armour® brand through a sock licensing agreement. With close to four decades of developing global manufacturing expertise, Gildan is one of the world’s most efficient, ethical, and sustainable apparel manufacturers. Founded in Canada, Gildan operates out of roughly 30 locations worldwide and sells its products in 60+ markets globally. Together with its 50,000+ employees, Gildan operates with a proven commitment to industry-leading Environmental, Social, and Governance (ESG) practices throughout its supply chain in accordance with its comprehensive ESG program embedded in the Company's long-term business strategy. More about the company at gildancorp.com.

The opportunity

Reporting directly to the IT Infrastructure Manager, the Senior System Administrator (Linux/Unix) serves as the technical lead ensuring the optimal performance, stability, and security of Gildan's core operating system platforms and file-transfer networks. This advanced position is vital to maintaining business continuity across global operations, driving architectural standards, and spearheading the support for everything from complex virtualization layers to specialized enterprise applications.

As part of a business that operates around the clock, this position requires commitment to a rotational on-call schedule including scheduled evenings and weekends to ensure seamless operational coverage, support international sites, and execute critical updates outside of standard business hours.

The role

• Systems Leadership: Architect, provision, configure, and maintain RedHat Linux enterprise environments, Oracle Virtual Machine (OVM), VMware, and core system hardware while driving operational excellence.
• Managed File Transfer (MFT): Design, support, and optimize critical enterprise data exchange via SFTP frameworks and HelpSystems GoAnywhere, establishing script standards and core configuration protocols.
• Advanced Application Support: Lead the administration, patching, and technical troubleshooting of specialized enterprise platforms, serving as the highest tier of technical escalation.
• Security & SOX Compliance: Enforce enterprise network and physical security policies, govern user access controls, and meticulously oversee the compliance and updates of SOX documentation.
• Change & Patch Management: Strategy-build, test, and deploy critical system upgrades, software patches, and environmental changes rigorously to guarantee zero disruption to integrated client systems.
• Business Continuity: Architect, evaluate, and lead multi-site testing for the system Disaster Recovery (DR) Plan.
• Documentation & Audit Leadership: Standardize and maintain up-to-date system documentation, complex step-by-step operational procedures (with visual captures), and software license inventories.
• Service Delivery: Provide high-quality, escalation-level technical support to internal clients, promptly resolving complex issues and strategic enhancement requests.
• Innovation & Research: Drive technological roadmaps by conducting research and detailed solution comparisons to provide data-driven recommendations for new technology acquisitions and system enhancements.
• Operational Communication: Oversee the effective, timely communication of upcoming planned and unplanned systems changes to cross-functional users.

The requirement

Knowledge & Professional

Experience

• Bachelor’s degree in computer science, Information Technology, or a related technical discipline (or equivalent professional experience) from any reputed public or private university.
• 8+ years of progressive experience as a Unix/Linux administrator within a complex, multi-platform enterprise environment, including at least 3+ years functioning in a senior or lead capacity.

Attributes

• Communication Skills: Exceptional written and verbal communication skills, with the ability to clearly articulate technical changes to both technical teams and business stakeholders
• Technical Mastery: In-depth knowledge of RedHat Linux, robust Shell scripting (Bash), and enterprise SFTP infrastructure.
• Virtualization: Strong administrative knowledge of OVM (Oracle Virtual Machine) and VMware frameworks.
• Valued Assets: Experience with HelpSystems GoAnywhere, IBM VIO, or AIX environments is highly advantageous.
• Compliance & Security: Prior experience working within a regulated environment (such as SOX compliance) and managing strict security protocols.
• Collaboration: Demonstrated ability to lead cross-functional initiatives with Infrastructure, Business Intelligence (BI), and Development teams across international sites.
• Operational Flexibility: Flexibility and willingness to participate in a rotational, on-call framework to support a 24/7 global manufacturing operation

What's in it for you?

• Join a publicly traded company dual-listed on NYSE and TSX with great potential
• Be part of a workplace where meaningful connections and teamwork are celebrated
• From local to international, be ready to work alongside a diverse group of colleagues
• Benefit from mentorship and continuous development opportunities
• Take advantage of our attractive benefits packages

You don't meet all criteria outlined above? Include your transferrable skills and unique experience in your application!

We thank all applicants for their interest, however only those selected for interviews will be contacted.

Come as you are:

Join a company that recognizes the importance of diversity, equity, and inclusion to create a successful and collaborative work environment. As an equal-opportunity employer, we value and embrace all the characteristics that make you uniquely you and seek to provide everyone with an equal chance to succeed. Because equity and inclusion matter at Gildan.