Application Support Developer (L3)

Brampton, ON
On-site
Posted Oct 17, 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 and deliver enhancements for telecom business applications, resolving complex incidents, defects, and performance issues. Support integrations and database components, perform root cause analysis, implement permanent fixes, and participate in releases, deployments, and on-call support.

Job details

Experience: 6-10 Years 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

Requires 6–10 years of experience and development experience with IBM iSeries technologies (RPG/RPGLE/COBOL) and/or Java. Requires knowledge of databases, middleware, APIs and web services, Linux/Unix, and SDLC, code management, and change management; telecom domain and 24x7 production support experience are preferred.