Senior Software Engineer position based in Lund, Sweden with onsite work 3 days per week. Responsible for developing and maintaining Java-based software, collaborating with cross-functional teams, and ensuring code quality through reviews. Requires proficiency in Java, Spring Boot, Git, Gerrit, Eclipse IDE, and AWS. Preferred skills include Amazon HSM, Ant, Maven, Jenkins, Python scripting, OpenSSL, Jira, Confluence, Unix/Linux, networking, and WildFly deployment. Candidates should hold a BSc/MSc in Computer Science or equivalent, be fluent in English, and have strong communication skills. Experience of 3+ years in similar roles is preferred.