Senior Software Engineer (Java, React) – Cloud & Security

Kainos

📍 Belfast, Northern Ireland, United-Kingdom

Full-time IT & Technology Posted March 02, 2026

Job Description

A leading technology firm in the United Kingdom is seeking a Senior Software Engineer to develop advanced features for their SaaS security product. The candidate will have responsibilities in backend development using Java and modern web applications with React. A crucial part of this role involves mentoring junior engineers and contributing to technical decisions within an agile team. The firm emphasizes a people-first culture and supports diversity. Work is primarily on-site in Belfast, and the role promises a dynamic environment with regular releases and innovative projects.
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