Sr Developer/ Lead – IBM i / AS400 Enterprise Wireline Billing Systems
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.
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:
8+ 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:
Own 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.
