Senior Java Developer

Overview

We are seeking an experienced Senior Java Developer (FULL TIME) to support our client on a contract basis
, building and optimising modern, cloud-native applications using the latest Java 21

Contract Length: 6 Months (Extendable - long term)

Contract Type:
Full Time - Contractor

Start:
Feb 2026

Location:

Hybrid (Offices in Johannesburg - once a week required)

Eligibility:
Must be located in / have a valid working permit for South Africa;
If you cannot work in South Africa - please do not apply.

The role focuses on designing and delivering high-performance backend systems, leveraging Java 21, Spring Boot and AWS.

You’ll work on scalable APIs, event-driven architectures, and cloud-first deployments built for resilience, performance, and maintainability.

• Design and implement microservices and serverless components using Java 21 and Spring Boot.
• Build and optimise RESTful and event-driven APIs for large-scale distributed systems.
• Deploy and manage services across AWS (ECS, Lambda, RDS, SQS/SNS, Cloud Watch, API Gateway).
• Collaborate with Dev Ops engineers to automate build and release pipelines using Jenkins.
• Optimise performance, scalability, and cost across compute, storage, and networking.
• Conduct code reviews, testing, and peer mentoring to ensure delivery excellence.
• Work in an Agile environment, collaborating with cross-functional teams across multiple time zones.

• 10+ years of experience as a Java Developer, with at least 1+ year using Java 17 or 21.
• Strong background in Spring Boot, Reactive Programming, and REST API development.
• Solid understanding of AWS services (ECS, Lambda, RDS, S3, API Gateway, Cloud Formation).
• Experience building and deploying containerised microservices (Docker, Kubernetes, or AWS EKS).
• Strong Communication in english
• Strong knowledge of CI/CD pipelines
• Excellent communication, problem-solving, and collaboration skills.

• Hybrid cloud experience - Azure / AWS