Senior Full Stack Java Developer

1 week ago

Johannesburg Metropolitan Area, South Africa DevologyX Full time R1 000 000 - R1 200 000 per year

We are seeking an experienced
Senior Full Stack 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: Jan / 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.

KEY RESPONSIBILITIES

  • Design and implement microservices and serverless components using Java 21 and Spring Boot.
  • Work on Front End features using React (Angular experience also fine)
  • Build and optimise RESTful and event-driven APIs for large-scale distributed systems.
  • Deploy and manage services across AWS (ECS, Lambda, RDS, SQS/SNS, CloudWatch, API Gateway).
  • Collaborate with DevOps 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.

WHAT WILL MAKE US HAPPY

  • 10+ years of experience as a Java Developer, with at least 1+ year using Java 17 or 21.
  • React Experience (Angular or other front end frameworks ok)
  • Strong background in Spring Boot, Reactive Programming, and REST API development.
  • Solid understanding of AWS services (ECS, Lambda, RDS, S3, API Gateway, CloudFormation).
  • 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.

NICE TO HAVE

  • React, deep experience
  • Hybrid cloud experience - Azure / AWS

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