Senior Java Developer

iOCO Pty Ltd; Cape Town; On-site; ZAR 800 000 - 1 200 000; Full time

Job summary

A leading technology firm is seeking a Senior Java Developer to join a high-performance engineering team in Cape Town. You will design and maintain backend services using Java and Spring Boot in a cloud-native environment, contributing to mission-critical applications. Ideal candidates have over 8 years of backend development experience, strong AWS expertise, and a solid understanding of container orchestration using Kubernetes.

Qualifications

• 8+ years of backend development experience using Java (preferably Java 11+).
• Strong expertise in Spring Boot and building RESTful APIs.
• Hands-on experience with AWS Cloud services, including container orchestration and managed databases.

Responsibilities

• Design, build, and maintain microservices and backend APIs using Java and Spring Boot.
• Develop and deploy services into a containerized AWS environment using Kubernetes, Rancher, and Helm.
• Build scalable, event-driven solutions integrating with Kafka for high-volume message processing.

Skills

Backend development experience using Java

Expertise in Spring Boot

AWS Cloud services

Kubernetes

Kafka

PostgreSQL

Agile methodologies

Clean architecture principles

Job description

Join a high-performance engineering team delivering robust, scalable backend services for a major enterprise client in the financial sector as a Senior Java Developer. This is a key role in a modern, cloud-native environment, where you’ll be building services that power mission-critical applications used by millions of end users.

What you'll do:

• Design, build, and maintain microservices and backend APIs using Java and Spring Boot
• Develop and deploy services into a containerized AWS environment using Kubernetes, Rancher, and Helm
• Build scalable, event-driven solutions integrating with Kafka for high-volume message processing
• Manage and optimize relational data models using PostgreSQL Aurora
• Work within Agile squads to deliver clean, testable, and maintainable code
• Collaborate with DevOps and architecture teams on infrastructure, CI/CD pipelines, and observability
• Ensure high availability, performance, and security in cloud-native environments

Your expertise:

• 8+ years of backend development experience using Java (preferably Java 11+)
• Strong expertise in Spring Boot and building RESTful APIs
• Hands-on experience with AWS Cloud services, including container orchestration and managed databases
• Deep understanding of containerized environments using Kubernetes, preferably with Rancher
• Experience with Helm for packaging and deploying Kubernetes applications
• Solid understanding and practical use of Kafka in a distributed systems context
• Proficiency in PostgreSQL, ideally with exposure to Aurora in a cloud environment
• Strong grasp of software engineering principles, system design, and clean architecture
• Comfortable working in large, complex, and regulated enterprise environments