> Markdown version of [/jobs/ext/4521309-java-backend-developer](https://www.wearedevelopers.com/jobs/ext/4521309-java-backend-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Java Backend Developer - **Company:** DS Technologies Inc - **Location:** Phoenix, AZ, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Amazon Web Services, Microsoft Azure, Cloud Computing, Code Review, Continuous Integration, Software Debugging, Software Design Patterns, DevOps, Distributed Systems, Spring Framework, Performance Tuning, Systems Development Life Cycle, Software Engineering, Multithreading, Google Cloud, Spring-boot, Backend, Containerization, Kubernetes, Reactive Programming, Api Gateway, Restful APIs, Docker, Microservices - **Published:** November 2, 2026 - **Apply:** https://www.careerbuilder.com/job-details/java-backend-developer-phoenix-az--b5382687-e2f6-4d2e-a0bd-f20403961c9d ## About the Role Java, Software Engineering, Continuous Improvement, Technical Support, Customer Experience, Customer Support/Service, Exceeded Sales Goal, Java, Software Engineering, Scalable System Development, We are seeking a highly skilled Java Backend Developer with strong hands-on experience in enterprise-level backend development. The ideal candidate will have deep expertise in Java, REST APIs, multithreading, and Spring frameworks, along with experience building scalable, cloud-ready applications., * 6+ years of backend development experience using Java. * Strong hands-on experience with: + REST APIs + Reactive programming (RX) + Multithreading + Design Patterns + Spring / Spring Boot * Solid understanding of scalability, distributed systems, microservices, and high-availability systems. * Experience working with Cloud platforms (AWS, GCP, Azure) and DevOps tools. * Strong debugging, problem-solving, and performance optimization skills. Preferred Skills * American Express (AMEX) project experience (highly preferred). * Experience in IBM environments or financial services. * Knowledge of CI/CD, containerization (Docker/Kubernetes), and API gateways. ## Description * Experience Required: 6+ Years * Design, develop, and maintain high-performance backend services using Java. * Build and optimize RESTful APIs and backend components. * Work with multi-threaded and high-concurrency systems. * Apply design patterns and best coding practices in everyday development. * Develop microservices using Spring / Spring Boot. * Collaborate with DevOps, Cloud, and Architecture teams for deployments and scaling. * Troubleshoot production issues and optimize system performance. * Participate in code reviews, architecture discussions, and technical solutioning.