Application Support Developer

Brampton, ON
Hybrid
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 enhancements for telecom business applications, including troubleshooting complex incidents, defects, and performance issues. Develop and deploy minor enhancements and regulatory changes, support integrations and database components, perform root cause analysis, and participate in releases, deployments, and on-call support.

Job details

Job Title: Application Support Developer (L3) Location: Brampton, ON (Hybrid) Experience: 6–10 Years Role Overview We are seeking an Application Support Developer (L3) to provide production support and deliver enhancements for telecom business applications. Key Responsibilities Provide L3 support and enhancements for telecom business applications. Troubleshoot 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 releases, deployments, and on-call support. Required Skills IBM iSeries (RPG/RPGLE/COBOL) and/or Java development. Oracle Database, SQL, and DB2. IBM MQ, OSB, WebLogic, APIs, and Web Services. Linux/Unix environments. SDLC, code management, and change management processes. Preferred Qualifications Telecom billing, provisioning, or enterprise portal experience. Production support experience in 24x7 environments.

What you’ll do

Requirements

The role seeks 6–10 years of experience and requires IBM iSeries development using RPG/RPGLE/COBOL and/or Java, along with Oracle Database, SQL, and DB2. Candidates should also have experience with IBM MQ, OSB, WebLogic, APIs, web services, Linux/Unix, SDLC, code management, and change management; telecom and 24x7 production support experience are preferred.