Full Stack Java Developer 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.