Principal System Support Specialist

About the role

The Principal System Support Specialist will act as the IBMi (AS/400) Systems Administrator for DHL IT Services. You will be responsible for the day‑to‑day operation, configuration and security of IBMi servers across multiple client locations.

Key responsibilities

• Perform daily administration of IBMi hardware and software, including installation, configuration and maintenance.
• Manage system utilities such as backup/restore (BRMS), performance tuning and LPAR provisioning.
• Plan, test and apply operating system and application upgrades and patches in development, QA and production environments.
• Implement and document security best practices for the operating system and applications.
• Provide troubleshooting for IBMi‑based applications and hardware issues.

Required profile

• At least five years of hands‑on experience supporting IBMi environments in an enterprise setting.
• Strong knowledge of IBMi system administration, networking, access control and security.
• Ability to work independently, prioritize multiple tasks and collaborate with diverse client teams.
• Excellent communication skills, both written and verbal.

Required skills

• IBMi (AS/400) administration
• IBMi networking and security
• CL programming (working knowledge)
• RPG programming (working knowledge)
• BRMS backup/restore
• LPAR configuration
• System performance tuning
• OS patch and upgrade management