Join a fast-moving software engineering team focused on building and modernizing scalable applications, APIs, and cloud-enabled solutions. This role offers the opportunity to work across the full stack, improve automation and test practices, and help evolve systems from on-premises and internal platforms toward AWS-based architectures.

Responsibilities

• Develop and enhance software solutions using Java, C#, Python, .NET, Spring Boot, microservices, and APIs
• Support and maintain existing on-premises and internal platform applications while contributing to cloud modernization efforts
• Help design and implement serverless patterns and support migration from containerized applications to AWS
• Build and support industry-standard APIs, integration points, and service connectivity
• Design architecture patterns with attention to reliability, performance, and cost efficiency
• Promote software craftsmanship practices, including test-driven development, behavior-driven development, automated testing, CI, and CD
• Improve application performance through monitoring, metrics, troubleshooting, and root-cause analysis
• Collaborate in Agile ceremonies such as sprint planning, daily standups, and retrospectives
• Participate in code reviews, continuous improvement efforts, and documentation/playbook creation
• Support product upgrades, patching, maintenance, and production troubleshooting as needed
• Contribute to on-call support rotation and help resolve urgent issues in a calm, effective manner

Skills

• 2+ years of experience in Java, C#, Python, .NET, or full-stack development
• Hands-on experience with GitHub or GitLab, SonarQube, JUnit, and Spring Boot
• Strong understanding of unit testing and automated testing practices using TDD and BDD
• Experience virtualizing services for test automation with tools such as WireMock or Mockito
• Experience building automated backend and data-flow tests using tools such as Postman, REST Assured, Cypress, or ReadyAPI
• Working knowledge of CI tools such as Jenkins or CircleCI
• Experience with AWS cloud services and serverless or data processing components such as ECS, EKS, S3, Lambda, SQS/SNS, PostgreSQL, DynamoDB, SageMaker, and Athena
• Experience with relational and object databases, RESTful APIs, microservices, and service development standards
• Experience working in Agile environments and using workload management tools such as VersionOne or Agility
• Strong troubleshooting, problem-solving, communication, and collaboration skills
• Ability to work effectively in a fast-paced environment and adapt to changing priorities

Preferred Skills

• Bachelor’s degree in Computer Science, Information Systems, or a related field with relevant experience, or a master’s degree in a related field
• Experience creating test reports using tools such as Cucumber Report or Extent Report
• Experience with OpenShift
• Working knowledge of MQ
• AWS certification
• DevOps or automation experience in code testing, build, and deployment
• Experience developing software in the airline industry
• Knowledge of Windows Server and HP-UX operating systems

Horizontal is committed to fostering an inclusive, respectful, and equitable hiring experience where diverse perspectives are valued and everyone has the opportunity to contribute and thrive. We encourage candidates from all backgrounds to apply and bring their unique strengths to the team.