Mastek

Back End Developer

Company
Location
Reading, England, United Kingdom
Posted At
8/22/2025
Description

About the Role


We are seeking highly skilled Back End Developers to join our dynamic, multi-disciplinary project team. You will work closely with front-end developers, DevOps engineers, business analysts, interaction designers, user researchers, product managers, and test teams to deliver high-quality, scalable, and secure digital services.

You will be embedded in a collaborative environment, solving complex problems, integrating enterprise systems, and driving best practices in modern back-end development.


Key Responsibilities


  • Design, develop, and maintain back-end applications and microservices using Java 11 & 17 with dependency injection.
  • Build asynchronous RESTful APIs using Spring Boot.
  • Integrate with legacy and third-party systems using asynchronous and synchronous messaging patterns, including JMS and pub-sub channels.
  • Apply Domain Driven Design (DDD) principles for scalable and maintainable architectures.
  • Implement persistence layers using Hibernate and manage RDBMS transactions ensuring ACID compliance.
  • Develop and execute automated tests with JUnit and Mockito following a test-driven development (TDD) approach.
  • Use Git and pull-request workflows for version control and code reviews.
  • Work with Maven builds and consume CI/CD pipelines, analysing reports from tools like Checkstyle, PMD, Clover, and SonarQube.
  • Manage database changes using Liquibase.
  • Collaborate within agile methodologies to meet user needs.
  • Operate confidently in AWS or similar cloud environments.
  • Use UNIX command-line tools for development and deployment tasks.


Essential Skills & Experience


  • Strong Java development skills (Java 11 & 17).
  • Proven experience with Spring Boot for REST API development.
  • Expertise in asynchronous microservices and enterprise messaging systems.
  • Familiarity with DDD, ORM (Hibernate), and relational database concepts.
  • Strong cloud experience (AWS or equivalent).
  • Automated testing (JUnit, Mockito) and TDD expertise.
  • Source control with Git and PR-based review flows.
  • CI/CD experience with Maven and static code analysis tools.
  • Agile team experience, working in cross-functional environments.
  • Familiarity with Liquibase for database version control.
  • UNIX command-line proficiency.


Nice-to-Have Skills


  • Knowledge of Spring Batch.
  • Experience with Rules Engines (e.g., Drools).
  • Experience with JIRA and Confluence.

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