Senior Java Backend Engineer - Spring Boot & Microservices

Horizontal Talent; Brooklyn (OH); On-site; USD 110,000 - 150,000; Full time

Job summary

Horizontal Talent is seeking a Java backend engineer to design, develop, test, and maintain Java-based applications and microservices using Spring Boot. You will build RESTful APIs and implement backend logic in Oracle DB, while ensuring code quality and security.

The role emphasizes collaboration across Agile teams, with opportunities to optimize performance, contribute to API definitions, and participate in production readiness activities.

Qualifications

• Strong experience with Java backend development and Spring Boot.
• Hands-on experience building and maintaining REST APIs.
• Working knowledge of Oracle Database and Oracle SQL.
• Understanding of microservices architecture and enterprise application development.
• Ability to write secure, maintainable, and well-tested code.
• Experience troubleshooting technical issues and supporting application stability.
• Clear communication skills and the ability to work effectively with technical and non-technical stakeholders.
• Comfort working in an Agile delivery model.
• Strong collaboration, ownership, and problem-solving skills.

Responsibilities

• Design, develop, test, and maintain Java-based applications and microservices using Spring Boot and related frameworks.
• Build and support RESTful APIs that enable enterprise business processes and system integrations.
• Develop backend business logic, data access components, and integration layers using Java, Spring Boot, and Oracle Database.
• Write clean, secure, maintainable, and testable code that aligns with engineering standards.
• Work with Oracle SQL, database schemas, stored procedures, indexes, constraints, and query tuning to support performance and data integrity.
• Participate in solution design discussions, API definition, technical documentation, code reviews, and delivery planning.
• Troubleshoot issues across development, testing, and production environments, including root-cause analysis and defect resolution.
• Support application reliability, observability, and production readiness through logging, monitoring, and operational best practices.
• Collaborate with product owners, business analysts, QA, DevOps, architects, and developers in an Agile environment.
• Contribute to continuous improvement efforts focused on code quality, automation, performance, and delivery efficiency.

Skills

Java backend

Spring Boot

REST APIs

Oracle SQL

Microservices

Secure code

Troubleshooting

Agile

Communication

Collaboration

Tools

Kubernetes

GCP

Kafka

Job description

Horizontal Talent is seeking a Java backend engineer to design, develop, test, and maintain Java-based applications and microservices using Spring Boot. You will build RESTful APIs and implement backend logic in Oracle DB, while ensuring code quality and security.

The role emphasizes collaboration across Agile teams, with opportunities to optimize performance, contribute to API definitions, and participate in production readiness activities.