Backend Engineer - Java Spring Boot (Intermediate & Senior)

Summary

Builds and maintains scalable, secure backend services in Java Spring Boot: implementing auth with Spring Security, Kafka-driven messaging, Docker/Kubernetes deployments on AWS, and CI/CD pipelines, while writing tests and troubleshooting production issues for global users.

At Sumara Technology, we rely on a dynamic team of engineers to solve the many challenges and puzzles of our rapidly evolving technical stack. We’re seeking a full stack developer who is ready to work with new technologies and architectures in a forward-thinking organization that’s always pushing boundaries. The ideal candidate has experience building scalable backend systems a firm understanding of system design, APIs, databases, and event driven messaging systems. The Backend Engineer will join a small squad that uses new technology to solve challenges for both the front-end and back-end architecture, ultimately delivering amazing experiences for global users.

Requirements

  • 3+ years of professional software development experience
  • Strong proficiency in Java, with hands-on experience in Spring Boot and Spring Framework
  • Experience building and consuming RESTful APIs and working with microservices architectures
  • Familiarity with Spring Security for authentication and authorization
  • Experience with Apache Kafka or similar event-driven messaging systems
  • Good understanding of Docker and Kubernetes for containerization and orchestration
  • Proficiency in unit and integration testing using tools like JUnit and Mockito
  • Experience working with AWS cloud services.
  • Strong understanding of SQL databases (e.g., PostgreSQL, MySQL) and optionally NoSQL like DynamoDB
  • Familiarity with Git, CI/CD pipelines (e.g., Jenkins, GitHub Actions), and agile development methodologies
  • Solid grasp of system design principles, application security, and scalable architectures

Responsibilities

  • Design, build, and maintain scalable, reliable, and secure backend services using Java Spring Boot
  • Implement and manage authentication/authorization using Spring Security
  • Integrate and manage message-driven systems using Kafka or similar tools
  • Develop and deploy applications using Docker and Kubernetes
  • Write unit, integration, and performance tests to ensure code quality and system reliability
  • Build and maintain CI/CD pipelines to support continuous integration and automated deployments
  • Troubleshoot and resolve production issues and performance bottlenecks
  • Work closely with architects, DevOps engineers, and product teams to meet business goals
  • Follow best practices for code quality, application performance, and documentation
  • Stay current with advancements in the Java ecosystem and propose improvements to existing processes

See also

Backend jobs by country — openings, pay and top skills →

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