We are looking to hire Sr. Developer and Lead- IBM i / AS400 Enterprise Wireline Billing Systems at Brampton, ON/Toronto, ON (Onsite)

Description -This role is responsible for supporting and enhancing IBM i / AS400 applications in a telecommunications billing environment. It requires strong technical depth, sr. development capability, and the ability to manage own estimation, planning, development, technical delivery, production support, and transition risk across a legacy application landscape

Hands-on IBM i (iSeries/AS400) technical expertise across RPG, RPGLE (free format), CL/CLLE, COBOL, SQL/Embedded SQL, DDM, display/subfiles, DB2 for i, ILE architecture, batch jobs, and scheduled processes, with experience in development, production support, troubleshooting, and technical leadership Experience working with telecommunications enterprise billing systems, including Billing, Rating, Message Processing, Accounts Receivable, Ordering, and system integrations using web services and MQ Proficiency with IBM i development and support tools, including VS Code, GitHub Copilot, RDi, Implementer (MKS), Hawkeye, and PKENCRYPT/PKZIP, for development, code promotion, impact analysis, troubleshooting, and environment management Strong documentation, impact analysis, and solution design capability, including technical specifications, process flows, data mappings, and operational procedures Strong communication, and stakeholder management skills, with the ability to lead junior developers, manage priorities, follow development standards, perform peer reviews, maintain delivery discipline, and ensure effective ongoing knowledge transfer and operational readiness across business, QA, Operations, and other teams

Key Requirements

Must-Have Expectations

ions 5+ years of IBM i / AS400 experience, including recent hands-on Sr. Developer responsibilities. Strong capability in RPG/RPGLE, CL/CLLE, SQL, DB2 for i, batch processing, and legacy application support is required. Experience in telecommunications billing environments is strongly preferred. Strong estimation, planning, and technical delivery management capability is required. The successful candidate must be able to ramp up independently, work effectively with limited transition support, and collaborate with business, QA, Operations, and cross-functional teams.

Resource must be eligible to apply for GoC Clearance

Core Responsibilities ilitiesOwn IBM i applications across project development, maintenance, production support, and stability of existing RPGLE-based solutions. Analyze business and technical requirements, perform impact assessments, prepare solution designs, and deliver changes in alignment with SDLC standards. For smaller projects provide technical design, estimation, delivery planning, code reviews, design, and enforcement of coding, documentation, and change management standards. Support testing, deployments, and production issue resolution through defect investigation, root cause analysis, validation, and post-release support. Provide ongoing knowledge transfer and operational handover support to Operations, QA, and dependent teams to ensure readiness for deployments, support, and maintenance. Manage transition risk by identifying knowledge gaps, improving documentation, establishing sustainable support ownership, and maintaining delivery continuity.