Top Java Developer Jobs in Belfast

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

Develop tooling for Citi's developer community using Java and SpringBoot microservices. Integrate APIs, support SDLC, and guide developers globally.

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.

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

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.

As a Principal Java Engineer, you will contribute to the core infrastructure of Elasticsearch, create scalable features, and lead projects across engineering teams. Responsibilities include optimizing performance, supporting engineers, and driving long-term technical strategy.

Responsible for training large-language models by reviewing, ranking, and improving AI-generated code. Requires strong software engineering skills.

The Full Stack Java Developer will design and implement a proprietary media product, collaborating across teams to develop scalable cloud-native applications with technologies like Java, Node.js, and React.

The Full Stack Java Developer will design and develop scalable cloud-native applications for streaming media, collaborating with cross-functional teams.

As a Junior Software Developer, you'll train in Java and Scala, build real applications, and collaborate globally to solve business challenges.

Develop and maintain scalable microservices and RESTful APIs using Java and Spring Boot on AWS infrastructure. Collaborate with the team to deliver high-quality services.

The Senior Software Engineer will develop high-quality solutions for a SaaS security product, mentor junior members, and contribute to technical decisions while using Java and React.

This role involves training large language models to improve code through evaluation and feedback, focusing on correctness, efficiency, and communication.

The Senior Full Stack Engineer will develop innovative applications, manage the entire development cycle, and use XP with remote pairing.

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 Staff Software Engineer will own architecture for Java ecosystem infrastructure and build systems, ensuring secure, reproducible build workflows while mentoring peers and enhancing developer tools.

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.

The role involves improving Elasticsearch's concurrent indexing, maintaining cluster coordination, addressing performance issues, and supporting engineers. Requires strong Java and distributed systems knowledge.

As a Full Stack Engineer, you'll develop software solutions using Java, Node.js, and React, ensuring maintainability and security, while mentoring other engineers.

Join 3Pillar as a Junior Software Engineer, focusing on Java and Spring Boot to develop scalable software solutions and collaborate with teams.

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

The Java Full Stack Developer will create full-stack solutions using technologies like Java, React, and SQL while mentoring others, delivering scalable solutions, and implementing automation and AI in development processes.

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.