Hazelcast Jobs In South Africa - 2 Job Positions Available

Johannesburg, South Africa | Posted on 18/06/2026 Key Responsibilities Design, develop, and maintain enterprise-grade backend applications using Java EE/Jakarta EE standards. Build and optimize APIs, microservices, and integration layers using frameworks such as Spring / Spring

The company Upstream is a global leader in mobile marketing automation and digital service innovation, enabling Mobile Network Operators (MNOs) and brands to grow revenue, improve customer engagement and succeed in the digital economy. With over