Java (Kotlin) Developer

Salary: £43,500 - 71,500 per year

Requirements:

• Java and Test-Driven Development are essential.
• Proven experience in an application development role.
• Demonstrated execution capabilities.
• Bachelors or university degree, or equivalent experience in a similar role.
• Additional experience with Kotlin, cloud technologies such as Kubernetes or OpenShift, messaging technologies such as Kafka, Solace or TIBCO, database or data store technologies such as SQL Server or S3, and observability technologies such as OpenTelemetry, Elastic Stack/ELK or Grafana is advantageous.

Responsibilities:

• Own and deliver components in Java/Kotlin within the Core Prime Brokerage platform.
• Contribute hands-on to agile development.
• Apply and improve CI/CD practices.
• Implement and maintain developer-led automated testing solutions.
• Participate in the refinement of SDLC, agile, and DevOps processes.
• Take part in design, planning, and estimation discussions.
• Analyze assigned work in detail and break it into technical tasks.
• Collaborate with business analysts and stakeholders to clarify and refine requirements.
• Create and maintain project and technical documentation.
• Identify risks or issues in assigned tasks and communicate them to the team lead.
• Assist in production support with operations and business teams.
• Participate in support rotations to diagnose and resolve escalated issues.
• Contribute to documentation and post-mortem reviews.
• Implement software enhancements to resolve root causes and improve reliability, performance, and scalability.
• Collaborate as part of a global team and participate in peer reviews such as code reviews and pull requests.
• Coach and mentor junior analysts and graduates.

Technologies:

• CI/CD
• Cloud
• DevOps
• ELK
• Flow
• Grafana
• Support
• Java
• Kafka
• Kotlin
• Kubernetes
• Network
• OpenTelemetry
• OpenShift
• SQL
• TIBCO
• AI

More:

We are Citi, and our Tech team is helping redefine global finance at scale, with business across 180+ countries and systems handling trillions in network flow each day. Prime Brokerage Technology supports the operations of our clients and traders and plays a key role in our Prime Finance business, which is a major growth target for us. We offer a business casual workplace, a hybrid working model with up to 2 days working from home per week, competitive base salary with annual review, 27 days annual leave plus bank holidays, discretionary annual performance-related bonus, private medical care and life insurance, employee assistance program, pension plan, paid parental leave, special discounts for employees, family and friends, and access to learning and development resources. We are committed to a workplace where everyone feels comfortable coming to work as their whole self, every day.

last updated 35 week of 2026