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Java Development United Kingdom Jobs

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Agile Java Developer
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Join Citi's DevOps team in Belfast as an Agile Java Developer. You will build productivity tools using Java, Spring Boot, and Linux to enhance the developer experience globally. This role requires expertise in CI/CD, Gradle/Maven, and offers benefits like a performance bonus and private medical c...
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United Kingdom , Belfast
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Citi
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Senior Java Microservices Developer
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Join our team in Belfast as a Senior Java Microservices Developer. You will design and build scalable Spring Boot microservices for Private or Hybrid Cloud (GCP/AWS). We seek an expert in system design, Kafka, TDD/BDD, and modern CI/CD/DevOps practices. Champion engineering excellence through tru...
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United Kingdom , Belfast
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Citi
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Senior Java Developer
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Join our team in Belfast as a Senior Java Developer. You will drive application development using Java, Kafka, and SQL databases within an Agile SCRUM framework. Your role includes mentoring, peer reviews, and designing distributed systems with Docker/Kubernetes. We offer a competitive package wi...
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United Kingdom , Belfast
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Citi
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Senior Full Stack Java Developer
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Join a leading OTC derivatives technology team in Belfast, driving a major tech transformation. As a Senior Full Stack Java Developer, you will build robust solutions using Java, Spring, and Angular. We seek an engineer passionate about TDD, clean code, and distributed systems like AWS or Kafka.
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United Kingdom , Belfast
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Citi
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Senior / Lead Core Java Developer
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Join Citi in Belfast as a Senior/Lead Core Java Developer. You will lead the delivery of a global Equities OMS, collaborating closely with trading desks. This role requires extensive core Java expertise, including multi-threading and system analysis, along with leadership in a matrix environment....
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United Kingdom , Belfast
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Citi
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Lead Full Stack Java Developer
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Lead Full Stack Java Developer role in Belfast. Drive tech transformation for OTC derivatives, using Java, microservices, and cloud platforms. Lead a team, architect solutions, and foster a strong engineering culture in a global investment bank.
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United Kingdom , Belfast
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Citi
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Java Full Stack Developer
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Seeking a Senior Java Full Stack Developer in Belfast. Design and develop enterprise applications using Java, Spring, and Angular/React. Enjoy extensive benefits including bonus, private healthcare, and 27 days leave. Lead high-impact projects in a collaborative tech environment.
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United Kingdom , Belfast
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Citi
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Java Developer Equity Finance Technology – VP
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Join our Equity Finance Technology team in Belfast as a VP Java Developer. You will build high-impact trading solutions using strong Java, JMS, and Kafka expertise. This role offers agile collaboration with traders, leadership opportunities, and a comprehensive benefits package.
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United Kingdom , Belfast
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Citi
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Java Developer - AVP
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Join our Belfast team as a Java Developer - AVP. You will drive application development using Java, Kafka, and SQL databases within an Agile SCRUM framework. Key responsibilities include hands-on coding, system design, and ensuring performance in distributed systems. This role offers a chance to ...
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United Kingdom , Belfast
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Citi
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Java / Kotlin Developer – Equities Derivatives Strategic Pre-Trade Technology
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Join our Equity Derivatives strategic pre-trade technology team in Belfast as a Java/Kotlin Developer. You will transform systems into a best-in-class platform using microservices, Kubernetes, and CI/CD pipelines. We offer strong benefits, including a performance bonus and private medical care, i...
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United Kingdom , Belfast
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Citi
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Core Java Developer
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Join Citi in Belfast as a Core Java Developer. You will build and support a global Cash & Derivatives OMS, collaborating closely with trading desks. We seek an expert in Java, multi-threading, and tools like Git, Maven, and Linux. This role offers a competitive package including bonus, private he...
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United Kingdom , Belfast
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Citi
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Senior Java Developer – FX Options Technology
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Join our London team as a Senior Java Developer in FX Options Technology. This hands-on role involves designing features, providing L3 support, and collaborating with trading and quant teams. We seek a credible engineer with strong systems knowledge and a track record in building and renovating p...
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United Kingdom , London
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Citi
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Senior Java Developer
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Lead complex application development and systems analysis as a Senior Java Developer in Belfast. Utilize your expertise in software programming, project management, and financial sector knowledge. This senior role involves designing solutions, setting technical standards, and guiding cross-functi...
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United Kingdom , Belfast
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Citi
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Senior Java Developer
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Join our team in Belfast as a Senior Java Developer. You will design and build distributed systems using Java, Kafka, and SQL databases. This role involves mentoring, Agile development, and optimizing application performance. We offer a competitive bonus, private medical care, and 27 days of annu...
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United Kingdom , Belfast
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Citi
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Java Developer
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Join our team in Belfast as a Java Developer. You will design and build distributed systems using Java, Kafka, and SQL databases within an Agile SCRUM framework. This role involves hands-on development, peer code reviews, and performance optimization. We offer a competitive package including bonu...
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United Kingdom , Belfast
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Citi
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Java Full Stack Developer
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Join our Belfast team as a Senior Java Full Stack Developer. You will design and enhance a critical enterprise-wide client data system using Java, Spring, and Angular/React. This role offers a performance bonus, private medical care, and 27 days annual leave. Apply your expertise to lead innovati...
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United Kingdom , Belfast
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Citi
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Market Tech Java Developer
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Lead Java applications development as a Technology Lead Analyst in London. This senior role requires 6-10 years of experience, SME-level expertise, and strong project leadership. You will design systems, implement enhancements, and integrate complex business processes in a dynamic environment.
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United Kingdom , London
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Citi
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Senior Java Developer
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Join Citi's Technology team in Belfast as a Senior Java Developer. Design data pipelines using Java, Hadoop, and Spark while mentoring junior team members. Enjoy benefits like a performance bonus, private medical care, and 27 days annual leave. Drive innovation in a diverse, inclusive banking env...
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United Kingdom , Belfast
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Citi
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Java Algo Trading Developer
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Join Citi's Rates Algo Trading team in London as a Java Developer. Design and build high-performance, low-latency trading applications using core Java and multi-threaded programming. This role partners with business and quant teams, requiring strong fundamentals and a passion for technology. We o...
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United Kingdom , London
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Citi
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Senior Full Stack Java Developer
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Join Citi's FX Data Analytics & AI team in London as a Senior Full Stack Java Developer. Engineer robust, scalable data pipelines using Java, Spark, and cloud-native technologies within a dynamic trading environment. This role offers a competitive package including bonus, private medical care, an...
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United Kingdom , London
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Citi
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Explore the dynamic world of Java development jobs and launch a career at the heart of modern technology. Java Developers are the architects behind the robust, scalable, and secure software applications that power businesses worldwide. From enterprise-level banking systems and e-commerce platforms to cloud-native microservices, professionals in this field use the versatile Java programming language to build the foundational technology that drives our digital economy. A career in Java development offers a diverse range of opportunities, from backend systems and full-stack applications to leadership roles guiding technical strategy. Typically, a Java Developer's responsibilities encompass the entire software development lifecycle. This includes analyzing user requirements, designing system architecture, writing clean and efficient code, and conducting rigorous testing to ensure application reliability. Developers are responsible for building and maintaining server-side logic, integrating with databases and third-party services, and ensuring high performance and responsiveness of applications. As they progress in their careers, they often take on additional duties such as mentoring junior team members, leading project teams, making key technology stack decisions, and collaborating with stakeholders to translate complex business needs into technical solutions. Adherence to security best practices and established development processes is a constant priority. The core technical skill set for these jobs is built upon a deep proficiency in Java and its extensive ecosystem. Mastery of frameworks like Spring and Spring Boot is almost universally expected, as they provide the foundation for building modern applications. Experience with web services, particularly RESTful APIs, and a growing emphasis on microservices architecture are also standard requirements. Knowledge of relational databases (e.g., Oracle, PostgreSQL) and SQL is essential, often supplemented by experience with NoSQL databases. Familiarity with build tools like Maven or Gradle, version control systems like Git, and containerization technologies like Docker and Kubernetes is highly valued. For full-stack Java development jobs, skills in front-end technologies such as JavaScript, HTML, CSS, and frameworks like Angular or React are a significant advantage. Beyond technical expertise, successful Java Developers possess strong analytical and problem-solving abilities, allowing them to debug complex issues and design effective solutions. Excellent communication skills are crucial for collaborating with cross-functional teams, including business analysts, project managers, and quality assurance engineers. The field demands a commitment to continuous learning, as the technology landscape constantly evolves with trends in cloud computing (AWS, Azure, GCP), DevOps practices, CI/CD pipelines, and new frameworks. Whether you are an entry-level coder or a seasoned lead, Java development jobs offer a challenging and rewarding path for those passionate about building the software that shapes our future.

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