Senior Java Developer

Senior Java Developer

Location: London - Hybrid (2 days per week on-site)

Day Rate: Market Rate (Inside IR35)

Duration: 6 Months

We are seeking a highly skilled Senior Java Developer to join a key digital transformation initiative for one of the UK’s leading retailers. This role plays a pivotal part in designing and delivering innovative, scalable, and resilient solutions that directly enhance customer experience. You will work with modern engineering practices and cutting‑edge technologies—including microservices, event‑driven architectures, and cloud platforms—to build high‑performance systems in a fast‑paced environment.

• Develop, enhance, and maintain backend services using Java, Spring Boot, and Spring Security.
• Design and implement microservices and event‑driven architectures using Confluent Kafka.
• Build, maintain, and optimize CI/CD pipelines using Git Hub Actions, Jenkins, and shell scripting.
• Write and execute unit, integration, and performance tests using Mockito, Gatling, and JMeter.
• Monitor system performance, troubleshoot issues, and ensure reliability using New Relic and Grafana.
• Collaborate with cross‑functional teams to deliver high‑quality solutions aligned with business objectives.
• Contribute to best practices in coding, security, and system design.

• Strong proficiency in Java and Spring Boot.
• Hands‑on experience with microservices architectures and Kafka.
• Solid understanding of CI/CD processes and tools such as Jenkins and Git Hub Actions.
• Experience working with Postgre
  
  SQL and Mongo
  
  DB databases.
• Strong communication skills and ability to work effectively in a fast‑paced, agile environment.

• Exposure to AWS cloud services or AI technologies.
• Knowledge of performance testing tools such as Gatling and JMeter.
• Familiarity with monitoring platforms including New Relic and Grafana.
• Experience writing shell scripts for automation.
• Understanding of secure coding practices and Spring Security.