---
title: "Senior Mainframe IBM Assembler (BAL)… – Remote - Canada"
canonical: "https://www.metaintro.com/job/senior-mainframe-ibm-assembler-bal-developer-connex-payment-systems-59ed03d1-d989-50f8-bd74-b351da1cc177"
language: "en"
author: "Metaintro"
---

[/company/connex-payment-systems](/company/connex-payment-systems)[Connex Payment Systems](/company/connex-payment-systems)
# Senior Mainframe IBM Assembler (BAL) Developer – Connex Payment Systems (100% Remote) at Connex Payment Systems

LanguageEnglish
Français

**Setup**
: Remote - Canada

**Type**
: Full-time, Contract

**Level**
: senior

**Posted**
: Jul 6, 2026

## Description

The Senior Mainframe IBM Assembler (BAL) Developer will support a mission-critical Connex payment switching initiative involving Visa 0120 Automated Fuel Dispenser transactions. The role develops, optimizes, tests, and maintains IBM Mainframe Assembler applications; implements near real-time pre-authorization and transaction-reversal logic; integrates with confirmation-advice messaging; and supports phased delivery and production releases. It is a full-time/contract, 100% remote position requiring 15+ years of IBM Mainframe Assembler experience, extensive Connex payment-platform experience, and strong payment-processing and troubleshooting expertise.

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