Lead Java Developer

Our client operates across the finance industry and is urgently looking for an experienced Java developer to work on a long-term outside ir35 contract which can be delivered 100% remotely.

RequirementsKey Responsibilities:Lead the design and implementation of GraphQL APIs to meet business requirements.Collaborate with cross-functional teams to gather and understand API requirements.Utilise your strong proficiency in Java to develop and maintain high-quality software applications.Implement best practices for code quality, maintainability, and performance.Contribute to the overall system architecture and design decisions.Ensure scalability, reliability, and security of the software systems.Conduct thorough code reviews to maintain code quality and consistency.Provide guidance and mentorship to junior developers in the team.Integrate GraphQL APIs with existing systems and third-party services.Develop and execute comprehensive unit and integration tests.Collaborate with product managers, UX designers, and other stakeholders to ensure alignment between business requirements and technical solutions.Participate in Agile/Scrum development processes, including sprint planning, stand-ups, and retrospectives.

Technical requirementsIn-depth knowledge of Java programming language features, syntax, and constructs.Mastery of core Java concepts such as OOP (Object-Oriented Programming), multithreading, and exception handling.Proficiency in the Spring Framework, including Spring Boot, Spring MVC, Spring Data, and Spring Security.Understanding of inversion of control (IoC) and dependency injection (DI) principles.Expertise in Hibernate or JPA for object-relational mapping and database interaction.Familiarity with web development technologies such as HTML, CSS, and JavaScript.Experience with front-end frameworks/libraries (e.g., Angular, React, or Vue.js).Knowledge of building and consuming RESTful APIs using frameworks like Spring REST or JAX-RS.Strong understanding of GraphQL concepts and best practices.Proficient in working with relational databases like PostgreSQL and a good understanding of database design principles.Extensive experience with testing frameworks such as JUnit and TestNG for unit testing and integration testing.Familiarity with build tools like Gradle for dependency management.Proficient in using a version control system like Git for source code management.Knowledge of CI/CD pipelines and tools like Bamboo.Understanding and application of design patterns for creating scalable and maintainable software.Expertise in writing concurrent and multithreaded applications, including synchronisation mechanisms.Awareness of security best practices in Java development, including secure coding principles and vulnerability mitigation.Ability to optimise code for performance and diagnose and resolve performance-related issues.Experience with logging frameworks (e.g., SLF4J) and application monitoring tools.Familiarity with Agile development methodologies, particularly Scrum.Proficient in troubleshooting and debugging Java applications using various tools.Demonstrated commitment to continuous learning and staying updated with the latest Java and industry trends.

Education and Experience :Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field.5+ years of hands-on experience in Java software development.Proven experience in designing and implementing GraphQL APIs

Key Skills

• GraphQL
• REST APIs
• Spring Boot
• OOP