Senior Tandem / Mainframe Developer – HP NonStop | COBOL | TACL | Enscribe

Apptoza Inc.; Toronto; On-site; CAD 83,000 - 138,000; Part time

Job summary

Apptoza Inc. in Toronto is seeking a Tandem/Mainframe Developer with strong experience in HP NonStop (Tandem) and Mainframe technologies. The role focuses on developing, maintaining, and supporting Tandem and Mainframe applications, with emphasis on reliability and performance.

You will analyze requirements, design technical solutions, and contribute to SDLC and Agile practices while collaborating with cross-functional teams to deliver robust production systems and timely incident resolutions.

Qualifications

• Experience with Tandem/HP NonStop and/or Mainframe technologies.
• Experience with production support and incident resolution.
• Strong understanding of SDLC and Agile methodologies.

Responsibilities

• Develop, enhance, and maintain Tandem/Mainframe applications.
• Analyze business and technical requirements.
• Perform coding, testing, debugging, and implementation.
• Troubleshoot production issues and provide timely resolutions.
• Work with cross-functional teams to deliver application changes.
• Prepare technical documentation and support application releases.

Skills

Strong communication

Analytical thinking

SDLC & Agile familiarity

Tools

COBOL

TACL

Enscribe

SQL/MP

SQL/MX

JCL

DB2

CICS

Job description

Location: Toronto

Job Type: Contract

Job Description

We are looking for a Tandem / Mainframe Developer with strong experience in HP NonStop (Tandem) and/or Mainframe technologies. The candidate will be responsible for application development, maintenance, enhancements, and production support.

Required Skills

• Experience with COBOL and TACL.
• Experience with Enscribe and/or SQL/MP, SQL/MX.
• Good knowledge of Mainframe technologies such as COBOL, JCL, DB2, and CICS.
• Experience in application development, maintenance, and troubleshooting.
• Experience with production support and incident resolution.
• Ability to analyze requirements and develop technical solutions.
• Good understanding of SDLC and Agile methodologies.
• Strong communication and problem-solving skills.

Responsibilities

• Develop, enhance, and maintain Tandem/Mainframe applications.
• Analyze business and technical requirements.
• Perform coding, testing, debugging, and implementation.
• Troubleshoot production issues and provide timely resolutions.
• Work with cross-functional teams to deliver application changes.
• Prepare technical documentation and support application releases.

Preferred

• Experience working in Banking / Financial Services is a plus.
• Experience with Tandem-to-Mainframe or Mainframe-to-Tandem integration/migration is preferred.
• Experience with batch processing and production support is an advantage.