Senior Backend Engineer - Postilion/ATM Integrations (Java)

Capitec; Stellenbosch; On-site; ZAR 900,000 - 1,200,000; Full time

Benefits offered by this job

Clear career path

Job summary

Capitec in Stellenbosch seeks a highly skilled Software Engineer to join the Cash Devices team on a permanent basis. You will work on Postilion-based integrations and ATM device software in a lab-focused environment.

The role requires hands-on experience with Postilion systems, Java integrations, ISO 8583, and ATM protocols, with strong debugging and documentation skills. Based in Stellenbosch, you will access an ATM lab and collaborate cross-functionally.

Qualifications

• Minimum 5 years’ experience in a Postilion systems role.
• Minimum 5 years’ current experience with 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 working with modern source control systems (Git / GitHub), including branching, merge requests, and code reviews.
• Scripting experience (PowerShell or Python).
• Solid database knowledge; SQL Server experience preferred.
• Strong analytical, troubleshooting, and debugging skills.
• Excellent communication and documentation abilities.
• Experience in banking, fintech, payments, or switching platform environments.

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 and operational requirements
• 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 SDK

Java development

ISO 8583 messaging

ATM device protocols

Git / GitHub

PowerShell

Python

SQL Server

Analytical skills

Education

Grade 12 National Certificate / Vocational

Tertiary IT qualification

Tools

Postilion Realtime

PostCard

Postilion Office

Job description

Capitec in Stellenbosch seeks a highly skilled Software Engineer to join the Cash Devices team on a permanent basis. You will work on Postilion-based integrations and ATM device software in a lab-focused environment.

The role requires hands-on experience with Postilion systems, Java integrations, ISO 8583, and ATM protocols, with strong debugging and documentation skills. Based in Stellenbosch, you will access an ATM lab and collaborate cross-functionally.