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JOB DESCRIPTION Insight Global is looking for a Backend Java Developer to join one of the world's leading online payment platform companies based in San Jose, CA. The role involves developing a world-class transaction monitoring platform by leveraging scalable microservices, big data technologies, and generative AI to enable intelligent detection and automation. It requires strong expertise in Java, REST APIs, Spring Boot, and large-scale, high-concurrency systems. The engineer is expected to write clean, well-tested, and reusable code, lead design and code reviews, and contribute to architecture discussions. Success in this role demands cross-functional collaboration, agile mindset, strong communication skills, and the ability to manage multiple applications while continuously learning and adapting to new technologies. Pay range: $55-75hr dependent on level. REQUIRED SKILLS AND EXPERIENCE EE/CS or related majors. Bachelor and above. 2-5+ years working in software engineer. Solid knowledge in Java and experience in design and implementation of REST-APIs, Spring Boot. Experience in micro-service and high concurrency service design and optimization. Experience in large-scale service architecture design. Good understanding of database principles and SQL optimization beyond just data access. Good understanding and experience of message queue and asynchronous programming. Strong communication skills and written English. NICE TO HAVE SKILLS AND EXPERIENCE Experience with big data technologies Experience with cloud vendor platforms (GCP/AWS/Azure) Experience using agentic AI developer tools Experience with emerging AI design patterns Frontend full stack experience Knowledge of payment processing or regulatory compliance industry Solid knowledge in Java and experience in design and implementation of REST-APIs, Spring Boot. Experience in micro-service and high concurrency service design and optimization. Experience in large-scale service architecture design. Good understanding of database principles and SQL optimization beyond just data access. Good understanding and experience of message queue and asynchronous programming. Strong communication skills and written English. Experience in event-driven service development is a big plus. Experience in Big Data technology is a big plus. Experience in AI technology is a big plus. job perk: Posted At: 4 hours ago, job perk: Schedule Type: Contractor, job perk: Qualifications: No degree mentioned