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Java Developer – Remote Contract Opportunity Arc is sourcing candidates for a client opportunity focused on helping train and improve next-generation AI systems through real-world software engineering expertise. This role is paying $30-80/hour. We're looking for experienced Java Developers with strong backend engineering backgrounds and hands-on experience building scalable, production-grade applications. Key areas of experience include: • Java • Spring Framework / Spring Boot • REST APIs • Microservices Architecture • Backend Systems Design • Enterprise Application Development • API Integration • Performance Optimization The role involves applying real-world software engineering expertise to help advanced AI systems better understand backend development, software architecture, code quality, scalability, and engineering best practices. We're particularly interested in developers who have experience building and maintaining enterprise-grade systems, designing APIs, troubleshooting complex backend challenges, and delivering reliable solutions in production environments. Requirements: • Expert-level Java development experience • Strong hands-on experience with Spring and related frameworks • Solid understanding of RESTful services and microservices architecture • Strong communication skills and ability to work effectively in remote teams • Proven experience delivering production-grade backend systems Prior AI experience is not required. What matters most is strong software engineering fundamentals, backend development expertise, problem-solving ability, and the ability to communicate technical concepts clearly and effectively. Experience with cloud platforms, DevOps tooling, distributed systems, or high-performance backend environments is highly valued. PLEASE NOTE: Completion of the interview and verification process is mandatory before onboarding and project participation. If you're an experienced Java Developer interested in applying your expertise to the future of AI, feel free to apply.