Senior Back-End Software Engineer: Cash Devices

An industry leading Bank has an exciting opportunity available for a Senior Back-End Software Engineer who has strong Postilion expertise. Our client is looking for a highly skilled Software Engineer to join their Cash Devices team on a permanent basis. This role focuses on the development, integration, and support of custom ATM solutions, forming a critical part of the software platform that supports the ATM estate. This is a specialist role combining strong Postilion expertise with SDK-based Java development, with a primary focus on configuration, integration, and operational stability, rather than pure greenfield software development.

Key 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

The Ideal Candidate Has

Minimum 5 years' experience in a Postilion systems role including exposure to:

• Postilion Realtime
• PostCard
• Postilion Office
• ATM Application environments

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 (preferably 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

Education (Minimum)

• Grade 12 National Certificate / Vocational

Education (Ideal or Preferred)

• A relevant tertiary qualification in Information Technology

Skills

• Analytical Skills
• Attention to Detail
• Communications Skills
• Interpersonal & Relationship management Skills
• Problem solving skills

Additional Information

• Clear criminal and credit record

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