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Hybrid- IBM i​/AS400 iSeries Performance Engineer

Job in Colchester, Chittenden County, Vermont, 05446, USA
Listing for: F2Onsite
Full Time, Contract position
Listed on 2026-06-18
Job specializations:
  • IT/Tech
    Systems Administrator
Salary/Wage Range or Industry Benchmark: 80000 - 100000 USD Yearly USD 80000.00 100000.00 YEAR
Job Description & How to Apply Below

Hybrid- IBM i / AS400 (iSeries) Support Engineer
- Colchester, VT

6 month assignment
- May 2026 - October 2026. 40 hours per week. This is a Hybrid role. Candidates need to live within commuting distance of Colchester, VT to travel onsite when needed.

Summary

We are seeking an experienced IBM i / AS400 (iSeries) Support Engineer to provide ongoing support and maintenance for critical legacy systems. This role is responsible for ensuring the stability, performance, and security of IBM i environments, supporting business‑critical applications, and troubleshooting system issues in a production environment.

Key Responsibilities
  • Provide day‑to‑day support and administration of IBM i (AS400) systems
  • Monitor system performance and perform tuning, capacity planning, and optimization
  • Execute system maintenance, including PTFs, upgrades, and patch management
  • Manage backup and recovery processes, ensuring data integrity and availability
  • Troubleshoot and resolve system, job, and application issues
  • Administer user profiles, security settings, and access controls
  • Support batch processing, job scheduling, and job queue management
  • Collaborate with application teams to support deployments and changes
  • Maintain documentation, runbooks, and operational procedures
  • Ensure compliance with security policies and audit requirements
Required Qualifications
  • 5+ years of experience supporting IBM i / AS400 environments
  • Strong knowledge of IBM i OS (OS/400), CL commands, and job control
  • Experience with system monitoring, performance tuning, and troubleshooting
  • Familiarity with backup/recovery solutions (e.g., BRMS)
  • Understanding of security administration and user management
  • Using tools like GIAPA, iDoctor, Job Watcher, etc on their various iSeries systems
Preferred Qualifications
  • Experience with Power Systems hardware
  • Knowledge of DB2 for i and basic database administration
  • Experience with high availability / disaster recovery solutions (e.g., MIMIX, PowerHA)
  • Exposure to integration with modern platforms (Windows, Linux, APIs)
Ideal Candidate
  • Strong problem‑solver with a hands‑on operational mindset
  • Comfortable supporting mission‑critical legacy systems
  • Able to work independently and collaborate across cross‑functional teams
Additional Information
  • All candidates are encouraged to apply, but many positions require a strict drug and background check by our customers.
  • F2

    OnSite supports and adheres to all state laws regarding background checks.
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