Senior IBM i / AS400 Developer

Job Summary

Our Financial Services client is seeking an experienced Senior IBM i / AS400 Developer to support and modernize an internal platform. This role will provide continuity for a business-critical application that supports authorization, business data management, transaction processing, and settlement operations. The ideal candidate is a senior hands-on engineer who can independently support complex IBM i / AS400 applications, quickly learn business-critical OTR processes, troubleshoot production issues under time-sensitive conditions, and contribute to modernization work without disrupting current operations. This person should be comfortable working with business stakeholders, legacy technology teams, infrastructure partners, and modernization delivery teams to protect platform stability and ensure continuity as Rick transitions out of the role.


This position is W-2 only. We do not work with third-party firms or C2C arrangements for this role.


Core Responsibilities

• Provide production support and on-call coverage for internal applications
• Support and enhance authorization, business data management, and settlement system capabilities
• Analyze, troubleshoot, and resolve application defects, production issues, batch/process failures, data issues, and integration concerns
• Develop, test, debug, and maintain clean, efficient, and reliable RPGLE, CL, and SQL-based solutions
• Support MQ connectivity, file transfers, certificate-related issues, deployment readiness, and environment stability
• Lead or support project delivery from requirements through implementation, including estimation, design, development, testing, deployment, and post-production support
• Partner with business stakeholders, technology teams, and cross-functional partners to define requirements and deliver reliable solutions
• Ensure software changes meet quality, functionality, security, compliance, and operational standards
• Support CI/CD, GitLab, and ARCAD-based change management practices to improve release consistency, traceability, and deployment quality
• Maintain documentation, support procedures, and operational knowledge needed for long-term platform sustainability
• Share application, platform, and business process knowledge with the team to reduce support risk and improve resiliency

Required Skills/Experience (Must-Haves)

• 10 years of hands-on experience programming in RPGLE / Free Format RPG
• 10 years of experience with CL programming on IBM i / AS400 platforms
• Strong experience with screen and subfile development
• Strong working knowledge of embedded SQL within RPGLE applications
• Hands-on experience using IBM Rational Developer for i (RDi)
• Experience supporting production applications in a business-critical environment
• Working knowledge of GitLab for source control, branching, merge requests, and deployment workflows
• Experience using ARCAD change management software integrated with GitLab
• Knowledge of Connect:Direct file transfer processes and operational support
• Understanding of digital certificates and secure application connectivity
• Ability to analyze authorization, business data management, settlement, batch, and integration processes

Preferred Skills/Experience (Nice-to-Haves)

• Experience supporting modernization efforts involving legacy IBM i / AS400 applications and modern platforms
• Understanding of Redis-based caching patterns or data synchronization processes
• Experience with CI/CD automation practices for legacy and modernized application delivery
• Familiarity with disaster recovery exercises, outage recovery, and production resiliency practices
• Experience working in environments with high transaction volume, settlement accuracy, and operational reliability requirements
• Ability to mentor junior engineers and support knowledge transfer across the team

Key Competencies & Behaviors

• Ownership & Accountability
• Analytical Problem Solving
• Collaboration & Knowledge Sharing

Work Environment

• Location: Hybrid - Twin Cities Hub or Denver
• Hybrid: Hybrid

Compensation & Benefits

• Pay Range: The approximate pay rate for this position is between $55.00 and $65.00. Please note that the pay range provided is a good faith estimate. Final compensation may vary based on factors including but not limited to background, knowledge, skills, and location. We comply with local wage minimums.
• Medical, Dental, & Vision Insurance Plans
• Employee-Owned Profit Sharing (ESOP)
• 401K offered

About KellyMitchell

At KellyMitchell, our culture is world class. We’re movers and shakers! We don’t mind a bit of friendly competition, and we reward hard work with unlimited potential for growth. This is an exciting opportunity to join a company known for innovative solutions and unsurpassed customer service. We're passionate about helping companies solve their biggest IT staffing & project solutions challenges. As an employee-owned, women-led organization serving Fortune 500 companies nationwide, we deliver expert service at a moment's notice.


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