Software Engineer: Back-End at Capitec Bank

About the Role

• We are looking for an Intermediate Software Engineer II (Backend) to join our Card Processing and Fraud environment. You will work on real-time stream processing systems that detect and prevent card fraud, protecting millions of transactions every day. This role suits a self-starter who enjoys ownership and working in high-volume, low-latency environments.

What You Will Be Doing

• Build and enhance real-time fraud detection systems using Apache Flink (training provided) 
• Develop resilient stream processing applications handling high-volume card transactions 
• Design and implement event-driven architectures using Kafka and messaging platforms 
• Work with ISO 8583 card transaction message formats 
• Integrate with Postilion card payment processing systems 
• Build secure microservices using Spring Boot 
• Optimise systems for low latency and high availability 
• Implement monitoring and alerting for real-time processing pipelines 
• Work with PostgreSQL and MS SQL Server for transaction data and analysis 
• Deploy containerised applications using Docker and Kubernetes 
• Use AWS cloud services including S3, RDS, SQS, MSK and Kinesis 
• Participate in code reviews and promote testing best practices 
• Collaborate in Agile, cross-functional teams 

What We Are Looking For – Essential Requirements

• 4 years’ experience building production-grade Java applications 
• Strong Java expertise (Java 11+) and Spring Boot 
• Experience building event-driven systems using Kafka 
• Exposure to AWS cloud services 
• Understanding of microservices architectures 
• Experience designing RESTful APIs 
• Strong PostgreSQL skills and query optimisation 
• Git version control and collaborative development 
• CI/CD exposure, preferably GitHub Actions 

Tech Stack

• Backend: Java 11+, Apache Flink, Spring Boot, Spring Cloud, Maven 
• Streaming: Kafka, Kafka Streams 
• Data: PostgreSQL, Redis 
• Cloud: AWS (S3, RDS, SQS, MSK, Kinesis) 
• Infrastructure: Docker, Kubernetes 
• Payments: Postilion, ISO 8583 
• Observability: Prometheus, Grafana, OpenSearch 

Highly Valuable (We Will Train You)

• Stream processing frameworks such as Apache Flink, Kafka Streams or Apache Storm 
• Real-time processing and event-driven architecture patterns 
• Docker and Kubernetes 
• CI/CD pipelines and automation 

Nice-to-Have

• Payments or fintech experience 
• Card processing exposure 
• Postilion experience 
• ISO 8583 message format knowledge 
• Fraud, risk or financial crime systems 
• Redis or caching technologies 
• Monitoring tools such as Prometheus and Grafana 

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