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Intermediate Java Developer (12 month contract)

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Hybrid

Intermediate Java Developer (12 month contract)

Mindworx Consulting and Academy

Intermediate Java Developer (12 month contract)

Skills

SQL QueriesDockerJavaMicroservicesSpring BootPostgreSQLMySQLMicrosoft SQL ServerRabbitMQPostmanLinuxKubernetesOracle

4 days ago

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Important information


Contract type:

Freelance / Contract

Location:

City of Johannesburg Metropolitan Municipality, South Africa

Work mode:

Hybrid

Published on:

15 October 2026

What they need


We are looking for an Intermediate Java Developer (4–6 years' experience) for a 12-month hybrid contract. You will build and maintain core Java services on a large-scale telecoms billing and operations platform while driving enterprise integrations and hands-on client UAT/FAT sessions.

The Tech Stack Deep-Dive

Must-Haves:

  • Languages & Frameworks: Java (including J2EE, Spring)
  • Databases: Deep SQL & query optimization (MSSQL, Oracle, MySQL, or PostgreSQL)
  • DevOps, OS & Cloud: Linux, Bash scripting, Docker, and Kubernetes
  • Messaging & Tools: RabbitMQ or ActiveMQ, Git, Scrum/Agile, Postman

Nice-to-Haves:

  • Integrations & PL/SQL: Apache Camel, Oracle PL/SQL, and Oracle APEX
  • Domain Knowledge: Telecoms BSS/OSS background
  • Web Basics: Basic HTML and CSS

Key Responsibilities

  • Core Engineering: Build and optimize high-throughput Java microservices on a mission-critical enterprise billing platform.
  • Performance Tuning: Write and refine complex SQL across diverse database engines to maintain peak system performance.
  • Containerized Deployments: Manage containerized services on Linux using Docker and Kubernetes.
  • Direct Facilitation: Integrate enterprise message queues and lead FAT/UAT sessions directly with customer teams.

Why Join Us?

  • Impact at Scale: Work on a massive BSS modernization initiative delivered alongside an established international technology group.
  • Flexible Hybrid Setup: Enjoy a balanced work model with 2 days a week in Centurion, with all equipment, tools, and licenses fully provided.
  • Competitive Compensation: Market-related rates aligned with your experience on a dedicated, highly professional contract team

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