Java Developer with Kotlin (Prime Brokerage Technology)
Builds and owns core components of Citi's Prime Brokerage platform in Java and Kotlin, leading an agile team's architecture, CI/CD and DevOps practices. Day to day: coding with TDD, translating business needs into technical specs, mentoring, and improving production performance and reliability using Kubernetes, Kafka and observability tooling.
Java Developer
TEKsystems is hiring a full-stack Java Developer in Belfast to build and maintain large-scale distributed back-end systems, using Java as the primary language with some Python or TypeScript. The role relies on Kubernetes, GitOps, CI/CD pipelines, feature flagging, A/B testing, and database scaling.
Java Developer
Builds and maintains Citi's market access gateway connecting the bank to emerging-market trading venues for electronic execution, translating trading messages into exchange formats with focus on security, performance and reliability. Day-to-day work spans Java/Python development, testing, debugging and applications support.
Senior Java Developer: Kubernetes, CI/CD & Microservices
TEKsystems in Belfast is hiring a senior Java developer to build and maintain large-scale distributed backend systems, with optional Python/TypeScript work. Core stack is Java, Kubernetes, GitOps, and CI/CD pipelines, plus unit/integration testing and cross-team collaboration.
Java Developer
Experienced Java developer designing, building, and maintaining scalable Java applications on AWS, including database schema design, SQL performance tuning, and batch processing of large data volumes. Core stack: Java, Spring, Hibernate, REST APIs, AWS (EC2, S3, Lambda), and relational databases.
Lead Java Developer
Lead Java Developer at Citigroup in Belfast: design and deliver scalable Java microservices and event-driven systems (Spring Boot, Kafka) within Citi's enterprise data and governance workflows, while mentoring a developer team and championing CI/CD, code quality, and testing. Hybrid work model.
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