Top Java Developer Jobs in Belfast

Join our Digital & Data team as a Java Engineer, utilizing Java and cloud technologies to design and deliver software solutions while collaborating with cross-functional teams.

Develop Java software solutions, applying object-oriented principles, utilizing cloud technologies like AWS, and collaborating with teams. Lead projects and problem-solve with clients.

The Java Engineer role involves developing complex software solutions primarily using Java, focusing on multi-threading and performance optimization while collaborating across teams.

As a Principal Java Engineer II in the ML Core team, you will build and maintain machine learning components for Elasticsearch, collaborate with engineering teams, and ensure scalable and high-quality code. You'll lead projects from design to implementation while supporting the team and community.

Lead design, development, and implementation of scalable backend systems in Java. Provide technical leadership, architecture guidance, code reviews, mentor developers, optimize databases (RDBMS and NoSQL), and drive CI/CD and microservices delivery.

Design, develop, and maintain scalable, high-performance backend applications using Java and the Spring ecosystem. Participate across the SDLC, optimize performance, troubleshoot production issues, conduct code reviews, mentor junior developers, and collaborate with product and architecture teams.

The Java Engineer will design and implement scalable solutions, utilizing Java and AWS, while collaborating with cross-functional teams and ensuring agile best practices.

The role involves developing complex systems for financial trade processing, using Java and Spring, while offering project management and user support responsibilities.

The role involves writing high-quality back-end code in Java or Kotlin, contributing to architectural decisions, and automating SDLC processes. You will lead a small team, apply AI in projects, and ensure clear communication across distributed teams.

The role involves training large language models to write production-grade code using Java, performing code reviews, refactoring, and providing detailed explanations for coding decisions.

As a Senior Java Developer, you will develop high-quality solutions, mentor juniors, and contribute to technical decisions in a collaborative environment.

As a Senior Software Engineer, you'll develop high-quality software solutions, mentor junior members, apply best practices in design and build, and contribute to technical decisions in a collaborative environment.

The role involves developing software solutions for credit risk management, applying cloud principles, and enhancing business processes while ensuring compliance standards.

The Senior Java Backend Engineer will lead backend development for a migration project in a complex AWS environment, focusing on automating the actuarial lifecycle in Reinsurance and ensuring alignment with architectural standards.

Citi seeks a Senior Software Engineer (Java) to design and develop complex, high-performance systems for fixed income trade processing, utilizing Java and Spring technologies.

Seeking a Senior Software Engineer with expertise in Kotlin or Java to enhance developer platforms and internal tools at Citi's CTO organization, focusing on server-side engineering and modern databases.

Lead design, develop, and deploy enterprise Java backend and ReactJS front-ends; architect RDBMS and NoSQL solutions; improve CI/CD pipelines; mentor engineers; perform code reviews; troubleshoot full-stack issues; collaborate with product and design; explore integrating AI technologies.

As a Senior Product Engineer at Secfix, you will design, build, and maintain backend systems, collaborating with product teams and mentoring junior engineers, while leveraging AI tools for development.

The role involves optimizing Elasticsearch for high performance in distributed systems, managing clustering coordination, and resolving complex issues.

As a Senior Java Developer, you'll lead software development using Java and AWS, collaborating in an Agile team, adhering to best practices, and creating maintainable solutions.

Develop and implement a proprietary streaming media product using Java and modern web technologies, collaborating with cross-functional teams and ensuring scalable solutions.