Senior/Principal Engineer - Software (m/f/d)

Who We Are RE Partners is a technology consulting firm for those leaders that want to become champions by choosing a partner, not a staffing agency. digital transformation is more than just technology. talent of our global delivery organization and network of technology partners. approach has helped a wide-ranging portfolio of global clients reach their goals. firm's dedication to diversity has earned it the Women's Business Enterprise National Council (WBENC) certification as a Woman-Owned Business. Our client is the third-largest banking institution in the United States that is We are looking for a highly skilled Principal Full Stack Developer with expertise in Java (Backend) and React (Frontend) to join our team. Develop and maintain backend services using Java, with a strong focus on server-side engineering Design and implement scalable, secure, and high-performance APIs Lead backend development initiatives and enforce best coding practices Contribute to the React frontend, ensuring seamless integration with backend systems Work hands-on with LLM/AI technologies (Claude preferred) Mentor UI developers and guide frontend architecture decisions Participate in code reviews, architecture discussions, and performance optimization Strong backend development experience with Java (preferably Spring Boot) Deep expertise in server-side architecture and API design/development Proficiency in React for frontend development Hands-on experience with LLM/AI tools (e.g., Claude or similar) and integrating AI into applications Experience mentoring UI developers and working in cross-functional teams Solid understanding of databases and query optimization Exposure to cloud platforms (AWS, Azure, or GCP) Experience with CI/CD pipelines and DevOps practices