Senior Java Developer, Citi

Citi

Location:
United Kingdom, London

Category:
IT - Software Development

Contract Type:
Employment contract

Salary:

Not provided

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Job Description:

At Citi, we are committed to improving developer productivity across the organization. Our team focuses on building innovative DevSecOps solutions that empower developers to deliver secure and high-quality software efficiently. We contribute to open-source projects, particularly around the CycloneDX SBOM standard, and leverage cutting-edge technologies to create impactful tools and integrations.

Job Responsibility:

Design, develop, and maintain APIs and microservices using Java 21, Java 8, Project Reactor, and Spring WebFlux
Build and enhance SCA plugins for Gradle, Maven, and npm to identify vulnerabilities
Develop integrations with tools such as GitHub, SonarQube, TeamCity, Jenkins, and Tekton
Contribute to open-source projects, especially CycloneDX
Implement and manage dependency management solutions using Gradle, Maven, npm, PyPI, and Go modules
Work with relational databases (Postgres), including schema design, SQL integration, and change management using Flyway
Utilize Hazelcast for distributed caching and data storage
Deploy and manage applications on OpenShift using microservice architecture
Design and document APIs using OpenAPI standards
Write and maintain unit, integration, and end-to-end tests using JUnit 5, Mockito, WireMock, and Testcontainers
Collaborate with cross-functional teams to implement DevSecOps practices, including SCA, SAST, shift-left, and secure SDLC

Requirements:

Strong proficiency in Java (Java 21 and Java 8)
Experience with reactive programming (Project Reactor, Spring WebFlux)
Solid understanding of DevOps and DevSecOps principles, including SCA, SAST, and shift-left security
Hands-on experience with dependency management tools (Gradle, Maven, npm, etc.)
Familiarity with relational databases (Postgres) and database change management using Flyway
Experience with distributed caching systems like Hazelcast
Proficiency in microservice architecture and deploying applications on OpenShift
Knowledge of version control systems (Git)
Basic understanding of Linux
Strong testing skills using JUnit 5, Mockito, WireMock, and Testcontainers

Nice to have:

Experience with Go, JavaScript, or TypeScript
Familiarity with CI/CD tools like Jenkins, TeamCity, and Tekton
Knowledge of open-source contributions, especially in CycloneDX or similar projects

What we offer:

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
Hybrid working model (up to 2 days working at home per week)

Additional Information:

Job Posted:
June 12, 2025

Employment Type:

Fulltime

Work Type:

On-site work

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Senior Java Developer