Rayo, part of the UBDS group, is seeking a Back-End Developer to design, build, and maintain robust APIs and microservices for AWS-hosted platforms. This role involves delivering secure, scalable server-side solutions using Java and Spring Boot, with strong integration across AWS managed services. The successful candidate will also be expected to contribute to DevOps practices, performance optimisation, and team-wide code quality.
This opportunity is suitable for experienced developers looking to deepen their technical leadership, as well as those progressing into a senior capacity with hands-on AWS delivery and solution design experience.

REQUIREMENTS

• Strong proficiency in Java (11+) and Spring Boot frameworks.
• Experience designing and building scalable APIs and microservices.
• Hands-on experience with AWS services including SQS, SNS, RDS, Lambda, ECS/EKS, and EventBridge.
• Familiarity with CI/CD pipelines and DevOps collaboration in cloud environments.
• Demonstrable understanding of test-driven development and debugging techniques.
• Comfortable working within Agile teams and engaging in collaborative delivery.

DESIRABLE EXPERIENCE:

• 2–6 years of Java back-end development experience, including production deployments.
• Minimum of 2 years working on AWS cloud platforms in delivery roles.
• Prior experience designing secure and scalable systems for public sector or enterprise clients.
• AWS certifications (e.g., AWS Certified Developer or Solutions Architect) are advantageous.
• Experience mentoring teams and leading technical implementation efforts.

• Develop and maintain back-end components using Java (11+) and Spring Boot.
• Design and implement RESTful APIs and microservices within secure, cloud-native architectures.
• Integrate with a range of AWS managed services such as SQS, SNS, RDS, Lambda, ECS, and EventBridge.
• Apply test-driven development practices, ensuring code quality and maintainability.
• Contribute to CI/CD pipelines using tools such as Jenkins, GitHub Actions, or AWS CodePipeline.
• Collaborate with DevOps teams and demonstrate awareness of infrastructure-as-code principles.
• Lead on performance tuning, monitoring, and debugging activities.
• Mentor junior developers and participate in code reviews and solution design discussions.
• Support the enforcement of engineering best practices across Agile delivery teams.