> Markdown version of [/jobs/ext/4199485-core-java-developer](https://www.wearedevelopers.com/jobs/ext/4199485-core-java-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). --- # Core Java Developer - **Company:** Genesis10 - **Location:** Pennington, NJ, United States - **Experience:** Expert - **Salary:** $114,525.0 - $131,165.0 - **Contract:** Temporary contract - **Skills:** Java (Programming Language), Amazon Web Services, Microsoft Azure, Software Code Optimization, Code Review, Databases, Software Debugging, Software Design Patterns, DevOps, Distributed Systems, Enterprise Messaging Systems, Oracle Databases, Oracle (Applications), Performance Tuning, Query Optimization, Software Construction, Systems Architecture, Google Cloud, Enterprise Software Applications, Spring-boot, Backend, Event Driven Architecture, Apache Kafka, Restful APIs, Docker, Microservices - **Published:** October 31, 2026 - **Apply:** https://www.dice.com/job-detail/524174f0-a4c3-4f8c-9ba1-b2098c63fcc7 ## About the Role * 10 years of experience in backend development with Java * Strong expertise in Spring Boot and microservices architecture * Hands-on experience with Apache Kafka for building event-driven systems * Strong experience with Oracle databases, including performance tuning and query optimization * Deep understanding of distributed systems and system design * Experience designing high-availability, scalable enterprise systems * Strong knowledge of REST APIs, messaging systems, and asynchronous processing * Experience with system architecture, design patterns, and software engineering best practices * Excellent problem-solving and debugging skills * Strong communication and technical leadership skills Desired skills: * Experience with cloud platforms (AWS / Azure / Google Cloud Platform) * Knowledge of Docker and Kubernetes * Experience with CI/CD pipelines and DevOps practices * Experience working in large-scale enterprise or fintech systems ## Description * Design and implement scalable, high-performance backend systems using Java and Spring Boot * Architect and build event-driven systems using Kafka * Design microservices architecture and ensure system scalability, reliability, and maintainability * Lead technical solution design and architecture discussions * Develop robust APIs and backend services for enterprise applications * Optimize database interactions and schema design using Oracle * Provide technical leadership and mentorship to development teams * Ensure coding standards, design patterns, and best practices are followed * Collaborate with product managers, architects, and stakeholders to translate requirements into technical solutions * Conduct code reviews, performance tuning, and system optimization * Troubleshoot complex production issues and implement long-term fixes