Developer, Backend Developer, Software Development

Join a dynamic enterprise engineering team focused on modernizing and supporting a large portfolio of production applications in a complex, collaborative environment. This full stack role offers the opportunity to work across backend and frontend systems, improve application security and reliability, and contribute to meaningful modernization efforts.

• Build, enhance, and maintain full stack applications across backend services and frontend interfaces
• Develop and support Java or Kotlin microservices using Spring Boot and related Spring components
• Work on React and Type Script-based user interfaces, including reusable components and routing
• Contribute to service integrations in an event-driven, microservice-based architecture
• Investigate, troubleshoot, and improve existing code written by others in a large enterprise codebase
• Help remediate security issues, dependency vulnerabilities, and code quality concerns
• Participate in refactoring and modernization efforts that improve maintainability and performance
• Collaborate with engineering, product, platform, and architecture partners to deliver production-ready solutions
• Write clean, well-tested code and support ongoing improvements to development practices
• Contribute within a CI/CD and containerized environment supporting modern delivery workflows

• Strong hands-on experience with Java and/or Kotlin
• Production experience with Spring Boot
• Solid understanding of Spring MVC, Spring Security, Spring Data, dependency injection, validation, and REST APIs
• Experience designing and supporting microservice-based applications
• Production experience with React
• Type Script experience
• Experience with React Hooks, Context API, custom hooks, and React Router
• Ability to work across backend and frontend layers
• Understanding of asynchronous and event-driven programming patterns
• Experience working in large, complex enterprise environments
• Strong problem-solving skills and the ability to improve code developed by others
• Commitment to secure coding practices and software quality

• Kotlin development experience in production
• Experience with Kafka, PostgreSQL, Elasticsearch, Redis, or object storage
• Background in SQL optimization and event-driven architecture
• Experience with Git, Git Hub, and CI/CD pipelines
• Familiarity with Docker and Kubernetes or Open Shift
• Exposure to vulnerability remediation, CVE fixes, and OWASP Top 10 practices
• Experience with static code analysis and secrets management
• Experience with unit, integration, or contract testing
• Knowledge of observability and monitoring tools
• Comfort using AI-assisted development tools to support productivity and code understanding
• Experience with enterprise modernization or technical debt reduction initiatives

Horizontal is committed to fostering an inclusive workplace where diverse perspectives, backgrounds, and experiences are valued. We believe equitable hiring and an environment of respect and belonging help teams do their best work.

• For those that join the team, we offer competitive compensation and benefits including medical, dental, vision, and retirement.

The pay range for this role is $57 - $92 per hour based on qualifications and experience.

Applications will be accepted for 4 weeks.