Senior Java Applications Developer

Citi; Belfast City District; Hybrid; GBP 65,000 - 90,000; Full time

Benefits offered by this job

Hybrid working model (3 days in office

Learning and development resources

Wellbeing and work-life balance

Job summary

Citi is seeking a skilled software engineer to develop and maintain complex Java-based applications within a microservices architecture. You will leverage Spring Boot, RESTful services, and core Java features to deliver scalable solutions.

You will work in a team focused on high-quality code, CI/CD pipelines, and robust testing, contributing to enterprise data systems across Citi.

Qualifications

• Experience in developing and implementing complex software solutions.
• Strong knowledge of Java/J2EE, Spring Boot, and RESTful web services (XML, JSON).
• Proven experience with Microservices Architecture.

Responsibilities

• Develop and implement complex software solutions using Java/J2EE, Spring Boot, and RESTful web services.
• Design, develop, and maintain robust microservices with architectural best practices.
• Build and optimize SQL queries and ensure CI/CD pipelines are effective.
• Promote clean coding principles and maintain high code quality with Sonar.
• Design and implement unit, integration, and functional tests.
• Collaborate with team of developers to drive continuous improvement.

Skills

Java/J2EE

Spring Boot

RESTful web services

Microservices

Core Java multi-threading

Spring Framework

CI/CD

Git

Sonar

Unit/integration testing

Tools

Git (source control)

Docker

Kubernetes

OpenShift

Jira

Job description

About the team

Event Master Central is Citi’s centralized corporate action event repository and distribution platform that consolidates corporate action announcements and notifications from various vendors with cross-business operational process. As a critical pillar within the MRD and the broader Citi Enterprise Data Organization, our team is responsible for modernizing and managing the end-to-end lifecycle of corporate Action events across the enterprise.

What you will do

• Develop and implement complex software solutions using Java/J2EE, Spring Boot, and RESTful web services.
• Design, develop, and maintain robust microservices adhering to architectural best practices.
• Apply hands-on expertise in Core Java, including multi-threading and the Collections framework.
• Utilize Spring Framework effectively for application development.
• Work extensively in creating and optimizing SQL queries.
• Ensure adherence to software engineering best practices, object-oriented programming (OOP) principles, and design patterns.
• Contribute to the continuous integration and continuous delivery (CI/CD) pipelines.
• Manage source code effectively using tools such as Git or Bitbucket.
• Promote and apply clean coding principles and maintain high quality using tools like Sonar.
• Design and implement comprehensive unit, integration, and functional tests to ensure solution quality.
• Analyze and solve complex technical problems efficiently.
• Work with a team of application developers, fostering a culture of excellence, collaboration, and continuous improvement.

Key Skills and Experience required

• Experience in developing and implementing complex software solutions.
• Strong knowledge of Java/J2EE, Spring Boot, and RESTful web services (XML, JSON).
• Proven experience working with Microservices Architecture.
• Hands-on experience with Core Java, Multi-threading, Collections framework, and Spring Framework.
• Solid understanding of software engineering best practices, OOP, design patterns, and CI/CD pipelines.
• Experience with source code management tools (Git).
• Understanding of clean coding principles and code quality measurements using tools like Sonar.
• Demonstrated ability to design and implement unit, integration, and functional tests.
• A strong, solution-driven mindset with the ability to analyze complex problems, devise strategic solutions, and lead their implementation.
• Good written and verbal communication skills.

Advantages

• Experience with AI technology (Devin, Co Pilot)
• Understanding of Cloud-native development principles.
• Experience with Container Orchestration tools (Docker, Kubernetes, OpenShift, etc.).
• Proficiency in using Jira for tracking tasks, managing backlogs, and participating in sprint cycles.

What we can offer

At Citi, you will work at the intersection of data, finance, and commercial strategy, contributing to decisions that have real impact across a global organization. This role offers meaningful autonomy, cross-functional collaboration, and the opportunity to grow your analytical and governance expertise within a high-performing team.

• A hybrid working model with 3 days in the office and 2 days working remotely, giving you flexibility alongside team connection.
• Exposure to complex, high-value commercial and financial decisions that directly shape vendor strategy at a global scale.
• Access to learning and development resources that support your growth in data analytics, financial governance, and emerging technologies.
• The opportunity to work across finance, sourcing, and technology functions, broadening your professional network and cross-functional expertise.
• Wellbeing support and work-life balance initiatives designed to help you perform at your best.
• Competitive financial benefits and a rewards package aligned to your experience and contribution.

Job Family Group

Technology

Job Family

Applications Development

Time Type

Full time

Most Relevant Skills

Please see the requirements listed above.

Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

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