Job Description

We are looking for a Senior Java Developer to join a high-performance engineering team delivering robust, scalable backend services for a major enterprise client in the financial sector. 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.
Skills and Experience
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

Other
Other information applicable to the opportunity:

• Contract Position: 12 Months
• Location: Johannesburg or Cape Town

Why work for us?
Want to work for an organization that solves complex real-world problems with innovative software solutions? At iOCO, we believe anything is possible with modern technology, software, and development expertise. We are continuously pushing the boundaries of innovative solutions across multiple industries using an array of technologies.
You will be part of a consultancy, working with some of the most knowledgeable minds in the industry on interesting solutions across different business domains.
Our culture of continuous learning will ensure that you will have all the opportunities, tools, and support to hone and grow your craft.
By joining IOCO you will have an open invitation to developer inspiring forums. A place where you will be able to connect and learn from and with your peers by sharing ideas, experiences, practices, and solutions.
iOCO is an equal opportunity employer with an obligation to achieve its own unique EE objectives in the context of Employment Equity targets. Therefore, our employment strategy gives primary preference to previously disadvantaged individuals or groups.