Senior IBM i (AS400/iSeries) Developer Location: Brampton, ON (Hybrid – 2 to 3 Days Onsite) Duration: 6–12+ Months Contract Experience Required: 6–8+ Years

Job Overview We are seeking an experienced Senior IBM i (AS400/iSeries) Developer to support the development, enhancement, and maintenance of enterprise billing applications within a telecommunications environment. The ideal candidate will possess deep technical expertise across RPG/RPGLE, CL/CLLE, COBOL, DB2 for i, and IBM i architecture, along with strong experience in production support, troubleshooting, solution design, and technical leadership. This role requires close collaboration with business stakeholders, QA teams, operations teams, and cross-functional technology groups to deliver high-quality solutions and ensure operational stability.

Key Responsibilities Design, develop, enhance, and maintain applications on the IBM i (AS400/iSeries) platform. Develop and support solutions using: RPG RPGLE (Free Format) CL/CLLE COBOL SQL / Embedded SQL DB2 for i Perform analysis, development, testing, troubleshooting, and production support activities. Support batch processing, scheduled jobs, and operational processes within the IBM i environment. Participate in solution design, impact analysis, technical estimations, and implementation planning. Develop and maintain technical specifications, process flows, data mappings, and operational documentation. Troubleshoot complex application and system issues and provide timely resolutions. Support integrations using Web Services, APIs, and IBM MQ. Collaborate with business users and technical teams to gather requirements and deliver effective solutions. Conduct code reviews and ensure adherence to development standards and best practices. Mentor junior developers and provide technical leadership across project initiatives. Support release management, code promotions, and environment management activities. Drive knowledge transfer and ensure operational readiness across support teams.

Required Skills & Experience IBM i / AS400 Technical Expertise 8+ years of hands-on experience working with IBM i (AS400/iSeries) applications. Strong development experience with: RPG RPGLE (Free Format) CL/CLLE COBOL SQL / Embedded SQL Extensive experience with: DB2 for i ILE Architecture DDM Display Files Subfiles Batch Processing Scheduled Jobs Legacy Application Support Strong troubleshooting and production support experience. Development Tools Experience with IBM i development and support tools including: RDi (Rational Developer for i) VS Code GitHub Copilot Implementer (MKS) Hawkeye PKENCRYPT / PKZIP

Telecommunications Domain Experience Strong preference for candidates with experience supporting telecommunications billing platforms and processes, including: Billing Rating Message Processing Accounts Receivable Ordering Systems Enterprise System Integrations Web Services IBM MQ

Leadership & Functional Skills Strong technical leadership and mentoring capabilities. Experience leading development activities and coordinating deliverables. Strong estimation, planning, and delivery management skills. Ability to perform impact analysis and solution design. Excellent written and verbal communication skills. Proven ability to collaborate effectively with: Business Teams QA Teams Operations Teams Cross-Functional Technology Teams

Preferred Qualifications Experience in large-scale telecommunications environments. Strong understanding of enterprise billing systems and operational processes. Experience working within Agile and Waterfall delivery models. Familiarity with application modernization initiatives on IBM i platforms.

Additional Requirements Must be eligible to apply for Government of Canada (GoC) Security Clearance. Ability to work independently with minimal transition support. Strong commitment to quality, documentation, operational excellence, and knowledge sharing.

Why Join? Opportunity to work on large-scale enterprise telecommunications billing systems. Long-term contract with a stable and collaborative team environment. Exposure to complex IBM i modernization and integration initiatives. Hybrid work model offering flexibility and team collaboration.