Senior Java Lead - Microservices, Cloud, Hybrid

Citigroup Inc.; Belfast City District; Hybrid; GBP 70,000 - 110,000; Full time

Benefits offered by this job

Hybrid work arrangement (3 days in the

Learning resources

Wellbeing support

Competitive benefits

Job summary

Citigroup Inc. is recruiting a Lead Java Developer to steer senior technical work within Citi’s Event Master Central team. You will design and implement complex Java-based solutions, lead microservices development, and drive best practices in CI/CD, testing, and code quality.

The role emphasizes leadership and collaboration across technology and product teams, with a hybrid office/remote arrangement. The position requires strong core Java skills, Spring, microservices, and experience with Kafka

Qualifications

• Significant hands-on software engineering experience in enterprise-scale environments, with a proven track record of delivering robust, high-performance applications.
• 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.
• Practical experience designing and implementing event-driven systems using Apache Kafka, including topic configuration, producer/consumer APIs, and stream processing.
• 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.
• 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.

Responsibilities

• 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.
• Lead, mentor, and manage a team of application developers, fostering a culture of excellence, collaboration, and continuous improvement.

Skills

Java/J2EE

Spring Boot

RESTful web services

Microservices

Core Java

Multi-threading

Collections framework

Spring Framework

Event-driven systems

Kafka

CI/CD pipelines

Git

Sonar

Unit testing

Integration testing

Cloud-native

Docker

Kubernetes

OpenShift

Jira

Tools

Docker

Kubernetes

OpenShift

Git

Jira

Sonar

Job description

Citigroup Inc. is recruiting a Lead Java Developer to steer senior technical work within Citi’s Event Master Central team. You will design and implement complex Java-based solutions, lead microservices development, and drive best practices in CI/CD, testing, and code quality.

The role emphasizes leadership and collaboration across technology and product teams, with a hybrid office/remote arrangement. The position requires strong core Java skills, Spring, microservices, and experience with Kafka