Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech.

The Mid-level Java Developer will be an integral part of the Data Security Identity Innovation space within the Cloud Technology Service department. This intermediate-level position is responsible for the design, development, and implementation of robust microservice applications. The primary objective is to build solutions, predominantly using Java and Spring Boot, that drive automation and achieve cost reductions by streamlining manual processes across the firm. The successful candidate will ensure high-quality standards are met within existing and planned technology frameworks, contributing to the strategic evolution of our cloud-based identity services.

Responsibilities

• Develop, deploy, and maintain microservice applications primarily using Java and Spring Boot, and occasionally Python, focusing on automation and cost reduction initiatives.

• Contribute to the technical design, development, and testing of new features and functionalities within the identity innovation space.

• Collaborate with business and development teams to translate engineering requirements into technical specifications and assist in defining application and system processes.

• Ensure the seamless integration of microservices with existing systems and cloud infrastructure.

• Implement solutions and processes in accordance with audit initiatives and requirements, consulting with Business Information Security Officers (BISOs) and Technology Information Security Officers (TISOs) as needed.

• Exhibit an in-depth understanding of Java development best practices, microservices architecture, and cloud-native principles.

• Participate in code reviews, mentor junior team members, and contribute to continuous improvement of development processes.

• Appropriately assess risk when making technical decisions, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients, and assets, by driving compliance with applicable laws, rules, and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct, and business practices, and escalating, managing, and reporting control issues with transparency.

Qualifications

• Proven relevant experience in software development, with a strong focus on Java and microservices.

• Demonstrated experience working in a large, complex, and/or global environment, preferably within Financial Services.

• Proven ability to manage technical projects or significant project components effectively.

• Consistently demonstrates clear and concise written and verbal communication skills, especially in technical contexts.

• Comprehensive understanding of software design principles, development methodologies, and analytics tools to identify best practices.

• Demonstrated analytic and diagnostic skills for troubleshooting and problem-solving.

• Ability to work effectively in a matrix environment and partner with virtual teams.

• Ability to work independently, prioritize tasks, and take ownership of various parts of a project or initiative from conception to deployment.

• Ability to work under pressure and manage tight deadlines or unexpected changes in expectations or requirements in a fast-paced development environment.

• Proven track record of contributing to operational process change and improvement through technical solutions.

Education

• Bachelor’s degree/University degree in Computer Science, Engineering, or a related field, or equivalent experience.

Must-Have Skills

• Programming Languages: Core Java

• Frameworks: Spring Framework (Core, Spring Security, Spring Data)

• Databases Relational: Oracle, PostgreSQL

• Databases NoSQL: MongoDB

• Web Services: SOAP and RESTful API development

• Build Tools: Maven, Gradle

• Version Control: Git

• Testing Frameworks: JUnit, AssertJ, Mockito, Cucumber

• Logging: Experience with logging frameworks (e.g., SLF4J, Log4j)

• Containerization: Docker, Kubernetes

• Message Queues: Kafka

• Architecture: Microservices Architecture

• DevOps: CI/CD pipelines and practices

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Nice-to-Have Skills

• Programming Languages: Basic knowledge and experience with Python

• Performance Tuning: Basic knowledge of JVM tuning and application profiling

What we’ll provide you

By joining Citi Belfast, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:

• 27 days annual leave (plus bank holidays)
• A discretional annual performance related bonus
• Private Medical Care & Life Insurance
• Employee Assistance Program
• Pension Plan
• Paid Parental Leave
• Special discounts for employees, family, and friends
• Access to an array of learning and development resources

Visit our Global Benefits page to learn more.

Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive.