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Software Engineer: Back-End (Postilion SDK Developer – Payments Transaction Switching) job at Capitec Bank Ltd | Apply Now
Western Cape, South Africa
Capitec Bank Ltd, based in South Africa, is committed to offering accessible, affordable, and innovative banking solutions that cater to the financial needs of individuals and businesses. The bank’s mission is to simplify banking and empower people to live better lives by providing flexible and transparent financial products. Renowned for its customer-centric approach, Capitec has earned widespread recognition as one of South Africa’s leading financial institutions, often praised for its digital banking services and user-friendly platforms.
The work culture at Capitec is collaborative and dynamic, fostering a supportive environment that encourages employee development and well-being. Job opportunities within the organization are plentiful, with a focus on creating a diverse and inclusive workforce that embraces both traditional office and remote work arrangements. Founded in 2001, Capitec has rapidly evolved, becoming a key player in South Africa’s banking sector by adopting innovative business models that disrupt traditional banking.
The bank's size and reach extend across South Africa, with a growing presence in global financial markets. Its core values of simplicity, transparency, and customer focus guide all operations, while its corporate social responsibility initiatives focus on education, financial literacy, and supporting local communities. For more information, visit Capitec's official website at www.capitecbank.co.za.
Are you looking for IT jobs in South Africa 2025 today? then you might be interested in Software Engineer: Back-End (Postilion SDK Developer – Payments Transaction Switching) job at Capitec Bank Ltd
Full Time
Deadline:
30 Sept 2025
Job Title
Software Engineer: Back-End (Postilion SDK Developer – Payments Transaction Switching) job at Capitec Bank Ltd
Capitec Bank Ltd
Job Description
This role is part of Capitec’s core payments team, which engineers the real-time infrastructure behind EFTs, card transactions, and ATM/POS integrations. You will design, build, test, and maintain server-side components, ensuring high availability, reliability, and scale. You will also work with ACI Postilion SDK to implement secure transaction flows, cryptographic tools, and compliance with global payment standards (ISO8583, EMV). The position requires close collaboration with architects, analysts, and developers to deliver mission-critical systems, while applying Agile and DevOps practices for continuous delivery and improvement.
Duties, Roles and Responsibilities
Qualifications, Education and Competencies
See all details of the qualifications, competencies and education for this role under the "How to Apply" section below.
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How to Apply
Design, develop, test, deploy, and maintain server-side applications using modern back-end frameworks.
Build custom modules with ACI Postilion SDK to support card/EFT switching and payments infrastructure.
Implement solutions compliant with ISO8583 protocols, EMV standards, and card/EFT transaction flows.
Work with cryptographic tools and HSMs (MACs, 3DES, DUKPT key management).
Optimise databases (SQL Server, PostgreSQL, or similar) for performance and reliability.
Design and integrate RESTful APIs into secure back-end systems.
Deploy and manage microservices and event-driven architectures on Kubernetes and cloud platforms (AWS/Azure).
Apply best practices in algorithms, data structures, testing, and version control.
Collaborate with cross-functional Agile teams and participate in DevOps pipelines.
Troubleshoot, enhance, and ensure resilience of high-availability payment systems.
SERVICES
COMMERCIAL
SERVICES
INDUSTRIAL
SERVICES
RESIDENTIAL
Qualifications (Minimum)
Grade 12 National Certificate / Vocational.
Qualifications (Ideal/Preferred)
Relevant tertiary qualification in Information Technology.
Experience
3+ years’ proven experience in back-end software development (with relevant frameworks and languages).
4+ years’ hands-on ACI Postilion SDK development (Realtime or Office).
Strong skills in Java development and understanding of ISO8583.
Practical exposure to EFT, ATM/POS integration, EMV standards.
Experience working with HSMs and cryptographic tools.
Knowledge of SQL databases (SQL Server, PostgreSQL).
Familiarity with Agile methodologies and DevOps practices.
Knowledge
IT systems development lifecycle (SDLC).
Advanced programming concepts, algorithms, and design patterns.
Database query optimisation (SQL/NoSQL).
RESTful API design and integration.
Cloud platforms (AWS, Azure).
Microservices and event-driven architectures.
Containerisation and Kubernetes deployment.
Skills
Analytical and problem-solving skills.
Strong communication and interpersonal skills.
Attention to detail.
Relationship management and teamwork.
Other Conditions
Clear criminal and credit record.
Commitment to Capitec’s employment equity goals.
