Senior Back-End Java Engineer – Postilion & ATM Integrations

Capitec Bank Ltd.; Stellenbosch; On-site; ZAR 650,000 - 1,000,000; Full time

Job summary

Capitec Bank Ltd. in Stellenbosch is seeking a highly skilled Software Engineer to join our Cash Devices team.

The role focuses on the development, integration, and support of custom ATM solutions, with emphasis on Postilion SDK configuration and SDK-based Java integrations. This specialist position requires hands-on access to the ATM lab, collaboration with QA, infra and business analysts, and a solid background in Postilion environments, ISO 8583 messaging, and ATM device protocols for ongoing

Qualifications

• Minimum 5 years in a Postilion systems role with exposure to Postilion Realtime, PostCard, Postilion Office and ATM environments.
• Minimum 5 years current experience in either Postilion SDK or Java development in integration-heavy environments.
• Strong understanding of ISO 8583 messaging and ATM transaction flows.
• Experience with ATM device protocols (e.g. Diebold 912, NCR NDC).
• Experience with modern source control systems (Git / GitHub), including branching and code reviews.
• Scripting experience (PowerShell or Python).
• Solid database knowledge; SQL Server preferred.
• Strong analytical, troubleshooting, and debugging skills; excellent communication and documentation abilities.
• Experience in banking, fintech, payments, or switching platforms.

Responsibilities

• Develop and maintain custom applications and interfaces using the Postilion SDK.
• Build and support Cash Devices applications and device integration solutions (ATM, POS, etc.).
• Customise and extend Postilion functionality to meet business needs.
• Develop and maintain SDK-based integrations using Java.
• Support and upgrade integration drivers between devices and ATM applications.
• Provide technical support, troubleshooting, and issue resolution for Postilion-related systems.
• Collaborate with cross-functional teams including QA, infrastructure, and business analysts.
• Support patching, upgrades, and lifecycle management of ATM software platforms.

Skills

Postilion expertise

Java development

ISO 8583

ATM device protocols

Git / GitHub

PowerShell or Python

SQL Server

Analytical skills

Documentation skills

Communication skills

Education

Grade 12 National Certificate / Vocational

Relevant IT tertiary qualification

Tools

Postilion SDK

Java

Job description

Capitec Bank Ltd. in Stellenbosch is seeking a highly skilled Software Engineer to join our Cash Devices team.

The role focuses on the development, integration, and support of custom ATM solutions, with emphasis on Postilion SDK configuration and SDK-based Java integrations. This specialist position requires hands-on access to the ATM lab, collaboration with QA, infra and business analysts, and a solid background in Postilion environments, ISO 8583 messaging, and ATM device protocols for ongoing