Senior Java Developer

iDbase Software; Johannesburg; Hybrid; ZAR 400 000 - 500 000; Full time

Job summary

A software development company is seeking a Senior Java Developer to design and maintain scalable applications. The ideal candidate has extensive experience with Java, Spring, and cloud solutions, and thrives in an Agile team environment. This role involves developing microservices, integrating APIs, and implementing CI/CD practices. The position offers a 12-month contract with the possibility of renewal in Johannesburg or remote.

Qualifications

• 5+ years of professional experience in Java development.
• Strong experience with Spring and Spring Boot frameworks.
• Cloud experience with AWS services.

Responsibilities

• Design, develop, and maintain backend applications using Java.
• Build microservices-based architectures with reusable components.
• Implement CI/CD pipelines using Jenkins or Azure DevOps.

Skills

Java development

Spring framework

DevOps practices

Microservices architecture

Problem-solving skills

Education

Bachelor’s degree in Computer Science or related field

Tools

Docker

Kubernetes

AWS Services

Apache Kafka

MS SQL

PostgreSQL

MongoDB

Job description

About the Role

We are seeking a highly experienced Senior Java Developer to join our team. You will design, develop, and maintain scalable enterprise-grade applications using Java and modern frameworks.

This role emphasizes cloud-native development, microservices architecture, and high-performance, secure coding practices. It is ideal for a seasoned engineer who thrives in collaborative Agile environments, embraces continuous learning, and is passionate about delivering robust, maintainable software solutions.

Key Responsibilities

Development & Architecture

• Design, develop, and maintain backend applications using Java 8+, Spring, and Spring Boot.
• Build microservices-based architectures with reusable and modular components.
• Develop and integrate RESTful APIs and event-driven services.
• Implement solutions using Apache Kafka for messaging and streaming.
• Ensure high availability, scalability, and security of applications.
• Apply best practices in coding, architecture, and DevOps for maintainable and extensible solutions.

Databases & Cloud

• Work with relational databases such as MS SQL and PostgreSQL and NoSQL databases like MongoDB.
• Design and optimize database queries, schema, and indexes for performance.
• Implement cloud-native solutions using AWS services such as EC2, S3, RDS, Lambda, and API Gateway.
• Monitor and optimize cloud-based applications for performance and cost efficiency.

Containerization & DevOps

• Containerize applications using Docker and manage orchestration using Kubernetes / EKS.
• Implement CI/CD pipelines using Jenkins, GitHub Actions, or Azure DevOps.
• Monitor applications using logging and performance tools such as CloudWatch, Prometheus, Grafana.
• Maintain unit tests, integration tests, and automated test frameworks to ensure code quality.

Collaboration & Process

• Collaborate with product managers, QA engineers, DevOps, and other developers in an Agile/Scrum environment.
• Participate in code reviews, architecture discussions, and knowledge-sharing sessions.
• Mentor junior developers and contribute to team growth and skill development.
• Translate functional and technical requirements into high-quality software solutions.

Requirements & Qualifications

Must-Have Skills:

• 5+ years of professional experience in Java development.
• Strong experience with Spring and Spring Boot frameworks.
• Hands-on experience with MS SQL, PostgreSQL, and MongoDB.
• Experience with Apache Kafka for messaging and streaming.
• Cloud experience with AWS (EC2, S3, RDS, Lambda).
• Containerization experience using Docker and orchestration with Kubernetes / EKS.
• Familiarity with microservices architecture and RESTful APIs.
• Strong problem-solving skills, attention to detail, and secure coding practices.

Highly Desirable Skills:

• Experience with event-driven architectures and message queues.
• Knowledge of performance optimization, monitoring, and observability.
• Familiarity with CI/CD pipelines, automated testing, and DevSecOps practices.
• Exposure to Infrastructure as Code (Terraform, CloudFormation, or ARM templates).

Education

• Bachelor’s degree, higher certificate, or diploma in Computer Science, Software Engineering, IT, or a related field.

Additional Information

• Contract Duration: 12 Months (with possibility of renewal)
• Salary: Negotiable
• Location Options: Johannesburg / Cape Town / Remote
• Must be located in South Africa or have a valid work permit for South Africa