Citi Group Senior Java Microservices Developer – Trade Settlements Technology 

United Kingdom, Northern Ireland, Belfast 

756808913

You will play a critical role in designing, developing, and maintaining scalable, high-quality software solutions while ensuring best-in-class engineering standards, including trunk-based development, test automation, security, and modern ways of working.This role requires deep expertise in system design, hands-on coding, and strong problem-solving skills to create resilient, high-performing, and secure applications.Key Responsibilities

Software Development & System Design

• Design, develop, and maintain robust, scalable, and high-performance applications.
• Implement trunk-based development practices to enable continuous integration and rapid delivery.
• Develop clean, maintainable, and testable code following SOLID principles and software design best practices.
• Ensure high levels of unit test coverage, test-driven development (TDD), and behavior-driven development (BDD).
• Actively contribute to hands-on coding, code reviews, and refactoring to maintain high engineering standards.

Engineering Excellence & Best Practices

• Drive the adoption of modern engineering ways of working, including Agile, DevOps, and CI/CD.
• Advocate for automated testing, infrastructure as code, and continuous monitoring to enhance software reliability.
• Apply Behavior-Driven Development (BDD), Test-Driven Development (TDD), and unit testing to ensure code quality and functionality.
• Conduct thorough code reviews, ensuring adherence to best practices in readability, performance, and security.
• Implement and enforce secure coding practices, performing vulnerability assessments and ensuring compliance with security standards.
• Collaborate effectively in agile environments, embracing DevOps principles and fostering a culture of continuous delivery and improvement.

Technical Leadership & Collaboration

• Partner with architects, product owners, and cross-functional teams to design scalable and distributed systems.
• Mentor junior engineers and foster a culture of engineering excellence and continuous learning.
• Collaborate closely with DevOps teams to optimize deployments, observability, and production resilience.
• Lead technical discussions, contribute to design documentation, and provide guidance on modern software architectures.
  

Skills and Qualifications

Must-Have Skills:

• Strong hands-on experience in coding (Java, Python, or any modern programming language).
• Experience with SpringBoot and messaging services like Kafka
• Deep expertise in system design and microservices architecture.
• Experience with trunk-based development, feature flags, and progressive delivery strategies.
• Proficiency in TDD, BDD, and automation-first mindset to ensure high test coverage and reliability.
• Strong understanding of CI/CD pipelines, and DevOps practices.
• Experience conducting code reviews, vulnerability assessments, and secure coding.
• Familiarity with modern cloud-native technologies (AWS, Kubernetes, Docker).
• Excellent problem-solving skills and ability to work in fast-paced, agile environments.
• Strong communication and collaboration skills.
  

Good-to-Have Skills:

• Experience with Reactive programming, Mongo DB, Elastic
• Knowledge of performance tuning, observability, and production monitoring.
• Familiarity with Agile frameworks and modern ways of working in product development.

Time Type:

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