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IBMi Administrator

TEKsystems | Greenwood Village, United States | Posted June 15, 2026

Position Overview

IBMi (AS/400) Systems Administrator
Greenwood Village, CO (Hybrid flexibility after
ramp)
6-Month Contract (ability to extend) | 40
hrs/week (MST)

Overview
We’re looking for
an experienced IBMi (AS/400) Systems Administrator to support a highly critical enterprise environment. This
role is ideal for someone who thrives in a hands-on operational environment, enjoys troubleshooting complex systems, and
takes pride in maintaining system reliability, performance, and security.
You’ll play a key role in day-to-day system operations, performance optimization, and incident resolution within a collaborative
team.

️ Key Responsibilities

+ Monitor and maintain IBMi systems (OS/400, i5/OS) to ensure uptime and performance

+ Perform system health checks, job monitoring, subsystem management, and message handling

+ Apply PTFs, firmware updates, and OS upgrades through change management processes

+ Manage user profi...

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