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Closed listing

Apptoza Inc.

Tandem Developer – Mainframe

Toronto, ON, Canada

Contract

This opening has closed.

The original listing is kept below for reference.

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About employer

Job details

Job type: Contract
Closing date: Oct 25, 2026
Experience: 5+ years of experience in Tandem/HP NonStop development.
Posting language: English
Posted: Sep 25, 2026

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Original job description

Archived listing. The details below describe a past opening.

Role: Tandem Developer – Mainframe

Location: Toronto, ON – 4 days onsite

Contract Role

Job Description

We are looking for a Tandem Developer with strong experience in HP NonStop/Tandem mainframe environments.

Key Responsibilities

Develop and maintain applications on Tandem/HP NonStop systems.
Work with COBOL, TAL, and TACL programming languages.
Develop and support batch and online applications.
Perform coding, debugging, testing, and production support.
Work with SQL/Enscribe databases for data processing.
Analyze production issues and provide technical solutions.
Perform application enhancements and maintenance activities.
Collaborate with business analysts, QA, and other technical teams.
Prepare technical documentation and participate in code reviews.

Required Skills

5+ years of experience in Tandem/HP NonStop development.
Strong experience with Tandem COBOL.
Hands-on experience with TAL/TACL.
Good knowledge of SQL and Enscribe.
Experience with batch processing and production support.
Understanding of mainframe concepts and application architecture.
Good debugging and problem-solving skills.

Good to Have

Experience with Pathway.
Knowledge of Guardian operating system.
Experience with MQ or messaging systems.
Knowledge of C, Java, or other programming languages.
Experience in banking, financial services, or other high-volume transaction environments

About employer

More about this job

Responsibilities

Develop, maintain, and enhance applications on Tandem/HP NonStop systems, including batch and online applications using COBOL, TAL, and TACL. Troubleshoot production issues, support data processing with SQL and Enscribe, and collaborate with business and technical teams on testing, documentation, and code reviews.

Requirements

Requires 5+ years of Tandem/HP NonStop development experience, strong Tandem COBOL skills, hands-on TAL/TACL experience, and knowledge of SQL and Enscribe. Candidates should also have experience with batch processing and production support, plus strong debugging and problem-solving skills; Pathway, Guardian, messaging systems, and financial-services experience are advantageous.

Skills

Tandem/HP NonStop
Tandem COBOL
TAL
TACL
SQL
Enscribe
Batch Processing
Production Support
Debugging
Pathway
Guardian Operating System
MQ
C
Java
Mainframe Application Architecture

Visa sponsorship

Not detected in the job text

Keywords

Tandem Developer
HP NonStop
Mainframe
COBOL
TAL
TACL
SQL
Enscribe
Batch Processing
Online Applications
Production Support
Debugging
Application Maintenance
Pathway
Guardian Operating System
MQ
Messaging Systems
C
Java
Banking
Financial Services
High-Volume Transactions
Code Reviews
Technical Documentation

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