Senior Java Software Engineer for NATO with security clearance

Would you like to join the leading international intergovernmental organization? We are seeking a team of experienced software engineers to support the NATO Communications and Information Agency (NCIA) in the development and maintenance of JChat – a text-based asynchronous chat capability used daily by NATO operators for coordination and collaborative decision-making. Responsibilities: Develop, maintain, and release new versions of JChat Java Client (Swing) Develop, maintain, and release new versions of JChat Web Client (Angular) Develop, maintain, and release new versions of JChat Openfire Server Develop, maintain, and release new versions of M-Link Server for JChat Participate in Scrum ceremonies Maintain and improve the development pipeline (CI/CD toolchain) Represent the JChat team at test events Produce working snapshot builds every two weeks Produce release candidates and test reports for each work package Ensure code quality: SonarQube A score (Security, Reliability, Maintainability) Maintain CI/CD uptime ≥ 98% and build success rate ≥ 95% Collaborate with NCIA Product Owner on backlog prioritisation (JIRA) Essential Qualifications & Experience: Degree in informatics, computer science, or a closely related engineering field At least five years of track record in software development using Java, including Java Swing At least five years of track record in web development using Angular Ability to produce efficient, clear, readable, maintainable, and high-quality code At least five years of track record with development of chat-related products based on XMPP, including implementation of XEPs, the M-Link Server, the Openfire Server and the Openfire plugin framework, and troubleshooting XMPP communication Solid experience working with Scrum Relevant and recent experience in continuous software integration and automated testing, including knowledge of test automation frameworks Experience using Maven, Jira, GitLab, and Zephyr Flexible, cooperative, and customer-focused attitude Fluency in English If you've read the description and feel this role is a great match, we'd love to hear from you! Click "Apply for this job" to be directed to a brief questionnaire. It should only take a few moments to complete, and we'll be in touch promptly if your experience aligns with our needs.