Application Support Developer (L3)

Brampton, ON
Hybrid
Posted Oct 20, 2026
1 position

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Employment type: Contract
Experience level: Senior · 5+ years
Posting language: English
Working hours: 40 hours per week
Seniority: Mid-Senior level
Application method: Direct apply is available

Job summary

Provide L3 production support for telecom business applications by resolving complex incidents, defects, and performance issues, and delivering minor enhancements and regulatory changes. Support integrations and database components, implement permanent fixes through root cause analysis, and participate in releases, deployments, and on-call support.

Job details

Title: Application Support Developer (L3) Location: Brampton, ON (Hybrid) Position type: Contract Job Summary: Provide L3 support and enhancement delivery for telecom business applications. Analyze and resolve complex production incidents, defects, and performance issues. Develop, test, and deploy minor enhancements and regulatory changes. Support integrations, interfaces, middleware, and database components. Perform root cause analysis and implement permanent fixes. Participate in release, deployment, and on-call support activities. Required Skills: IBM iSeries (RPG/RPGLE/COBOL) and/or Java development experience Oracle Database, SQL, DB2 IBM MQ, OSB, WebLogic, APIs, Web Services Linux/Unix environment SDLC, Code Management, and Change Management processes Preferred: Telecom billing, provisioning, or enterprise portal experience. Production support experience in 24x7 environments.

What you’ll do

Requirements

Experience with IBM iSeries technologies such as RPG, RPGLE, or COBOL, and/or Java development is required, along with experience in databases, middleware, APIs, and Linux/Unix environments. Familiarity with SDLC, code and change management, telecom billing or provisioning, enterprise portals, and 24x7 production support is preferred.