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Capstone IT is seeking a Senior Systems Engineer with expertise in IBM i (AS/400) environments to support, optimize, and maintain critical enterprise infrastructure. This role will serve as a senior technical resource responsible for ensuring platform stability, performance, security, and scalability while supporting ongoing business operations. This is a contract-to-hire opportunity designed to accelerate onboarding. Candidates must be able relocate to the client location in Springfield, Missouri within 12 months when converted to a full-time employee. Relocation assistance is available.
Job Responsibility
Administer, support, and optimize IBM i (AS/400) infrastructure and IBM Power Systems environments
Analyze business and technical requirements and implement infrastructure solutions that improve performance, reliability, and security
Monitor system health, performance, capacity, and availability while proactively identifying and resolving issues
Troubleshoot complex infrastructure problems and serve as a senior escalation point for technical support
Support system upgrades, maintenance, disaster recovery, and business continuity initiatives
Coordinate with vendors and third-party support providers to resolve platform-related issues
Create and maintain technical documentation, operational procedures, and architecture diagrams
Participate in on-call support and mentor junior team members as needed
Requirements
Strong hands-on experience administering IBM i (AS/400) environments
Experience supporting IBM Power Systems infrastructure
Proven expertise in troubleshooting, performance tuning, upgrades, and system maintenance
Experience with change management, disaster recovery, and operational support processes
Strong communication skills and ability to work independently in complex environments
Bachelor’s degree in Computer Science, Information Technology, Engineering, or equivalent experience
Nice to have
Experience with Mimix high availability and disaster recovery solutions
Experience with IBM PowerHA, backup/recovery, and business continuity planning
Knowledge of IBM i security administration and auditing
Exposure to AWS, Azure, or GCP environments
Scripting, automation, or infrastructure modernization experience