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.
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).
What you'll be doing:
* 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
What we're looking for:
* 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
Why join us?
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.