Tandem/Mainframe Developer — Contract (Toronto)

Apptoza Inc.; Toronto; On-site; CAD 90,000 - 125,000; Full time

Job summary

Apptoza Inc., located in Toronto, seeks a Tandem/Mainframe Developer with strong HP NonStop (Tandem) and mainframe experience to develop, maintain, enhance, and provide production support for critical applications.

You will analyze requirements, perform coding, testing, debugging, and partner with cross-functional teams to implement reliable changes and ensure smooth releases. Experience with Cobol, JCL, DB2, CICS, and SDLC/Agile is required.

Qualifications

• Proficiency in COBOL and TACL required.
• Experience with Enscribe, SQL/MP, and SQL/MX.
• Strong knowledge of COBOL, JCL, DB2, and CICS on mainframe systems.
• Experience in development, maintenance, and production support.
• Familiarity with SDLC and Agile methodologies; strong problem-solving.

Responsibilities

• Develop, enhance, and maintain Tandem/Mainframe applications.
• Analyze business and technical requirements.
• Code, test, debug, and implement changes.
• Troubleshoot production issues and provide timely resolutions.
• Coordinate with cross-functional teams to deliver releases.
• Prepare technical documentation and support releases.

Skills

COBOL

TACL

Enscribe

SQL/MP

SQL/MX

Mainframe

JCL

DB2

CICS

SDLC

Agile

Production support

Incident resolution

Analytical skills

Communication skills

Job description

Apptoza Inc., located in Toronto, seeks a Tandem/Mainframe Developer with strong HP NonStop (Tandem) and mainframe experience to develop, maintain, enhance, and provide production support for critical applications.

You will analyze requirements, perform coding, testing, debugging, and partner with cross-functional teams to implement reliable changes and ensure smooth releases. Experience with Cobol, JCL, DB2, CICS, and SDLC/Agile is required.