Senior System Administrator (AS400)

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

Gildan is seeking a skilled Senior System Administrator (AS400) to join our global infrastructure team. In this role, you will support and optimize business-critical systems running on IBM i (iSeries/AS400) and Oracle’s JD Edwards (JDE) EnterpriseOne ERP platforms.

You will play a vital role in preventing production disruptions, managing technical risks, and executing disaster recovery strategies. Working closely with Business Analysts, Developers, and global stakeholders, you will ensure our core manufacturing and supply chain environments remain secure, compliant, and highly available.

The role

• ERP & Application Support: Collaborate with developers and analysts to maintain JD Edwards EnterpriseOne applications; manage CNC tasks including JDE package builds, deployments, and security administration.
• Infrastructure Management: Maintain and support IBM Power Systems (pSeries), HMC, VIOS, external storage, and partition management (LPARs).
• High Availability & Recovery: Manage BRMS backups, maintain PowerHA environments, and actively lead semi-annual Disaster Recovery (DR) testing.
• System Maintenance: Perform routine OS upgrades, apply PTFs, update firmware, and manage third-party tools (e.g., Robot, Cilasoft).
• Security & Compliance: Partner with the IT Security team to ensure systems align with SOX controls, internal audits, and governance policies.
• Operations: Participate in a rotational shift schedule, including occasional 24/7 on-call availability to handle critical incidents.
• Service Delivery: Provide high-quality technical support to internal clients, promptly resolving issues and enhancement requests.
• Innovation & Research: Conduct research and solution comparisons to provide data-driven recommendations for new technology acquisitions and system enhancements.

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.
• 5+ years of hands-on administration experience with IBM i (OS/400, iSeries, V7R1 or newer).
• 3+ years of experience with JD Edwards EnterpriseOne or OneWorld system administration (package builds, OMW, Security).

Attributes

• ERP Deployment & Upgrades: Proven experience executing full JD Edwards platform upgrades on Windows or IBM i.
• Application Servers: Hands-on experience with WebLogic Application Server, including installations, upgrades, and patching.
• High Availability: Proven experience managing PowerHA environments and conducting failover testing.
• Backup Systems: Deep expertise with BRMS configuration and recovery on IBM i.
• Hardware & Virtualization: Strong technical knowledge of HMC (Hardware Management Console) and managing LPARs via VIOS.
• Platform Tools: Direct experience managing IBM i audit, security, and automation tools, specifically Cilasoft and Robot.
• Technical Skills: Proficient in SQL and core networking concepts (TCP/IP, Windows Server environment basics).

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.