Principal Full-Stack Engineer (Java,React,LLMs)

• Lead the design and development of scalable backend services in Java (Spring Boot)
• Build and optimize secure, high-performance APIs
• Contribute to and guide React-based frontend architecture
• Work hands-on with LLM/AI technologies (Claude or similar), integrating them into real-world applications
• Drive best practices across code quality, architecture, and performance
• Mentor engineers and support UI developers in delivering high-quality solutions
• Partner with stakeholders to translate business needs into technical execution
• Contribute to system design discussions, code reviews, and continuous improvement

This role is ideal for someone who combines deep backend expertise in Java with strong frontend capabilities in React, and hands-on experience working with LLMs (Claude preferred)., * Strong experience in Java backend development and server-side architecture

• Solid React experience on the frontend
• Hands-on experience with LLMs / AI tools and practical implementation
• Experience designing and building scalable, distributed systems
• Strong understanding of APIs, databases, and performance optimization
• Proven ability to lead technically and mentor others

Nice to have:

• Experience with GraphDB, Scala, or complex data processing systems
• Exposure to cloud platforms (AWS, Azure, or GCP)
• Familiarity with CI/CD pipelines and DevOps practices

We're hiring a Principal Full-Stack Engineer to join one of the largest banking institutions in the U.S. - a highly complex, high-impact environment where engineering decisions truly matter., At RE Partners, we partner with industry leaders to deliver high-impact technology solutions. We're not a traditional staffing agency - we operate as a true consulting partner, helping organizations navigate complex digital transformations. Our global team, diverse culture, and strong delivery model have made us a trusted partner to Fortune 1000 companies. If you're excited about building at scale, working with cutting-edge AI, and operating at a principal level - let's connect.