Java Software Engineer

Join a high-impact technology team building secure, enterprise-grade web and backend applications that support critical business functions. This opportunity is ideal for a Senior Java Software Engineer who enjoys solving complex technical challenges, partnering closely with product teams, and delivering scalable solutions with a strong focus on quality and security. Responsibilities

• Design, develop, and implement secure Java-based web and backend applications that support important business needs
• Collaborate with product and technical teams to create maintainable, scalable solutions with limited supervision
• Produce clear design documentation and contribute throughout the software development lifecycle
• Write clean, testable code and perform thorough unit, integration, and functional testing
• Apply secure coding practices and help strengthen application security across solutions
• Troubleshoot complex technical issues through debugging, investigation, and research
• Build and support messaging and integration components using enterprise middleware technologies
• Contribute to performance tuning efforts for SQL and Oracle database environments
• Help drive best practices and support the adoption of modern engineering approaches

• Strong hands-on experience with Core Java
• Experience with the Spring ecosystem, including Spring Framework and Spring Security
• Front-end development experience with Angular
• Solid SQL and Oracle database skills
• Experience with database performance tuning
• Knowledge of secure coding practices and application security
• Experience with unit, integration, and functional testing
• Deep understanding of JMS and messaging middleware, with IBM MQ preferred
• Hands-on experience with Spring JMS
• Bachelor’s degree or equivalent combination of education and directly related experience
• Excellent communication skills

Preferred Skills

• Experience building and supporting REST APIs and working with JSON
• Advanced experience with Spring Boot
• Experience with Spring Batch
• Exposure to AWS or other cloud technologies
• Background in enterprise application development within a collaborative environment

Horizontal is committed to fostering an inclusive workplace where different perspectives, experiences, and ideas are valued. We welcome applicants from all backgrounds and encourage talented professionals who share a passion for collaboration, innovation, and doing meaningful work to apply.