Principal Fullstack Engineer, Java, React, LLMs
Posted 4hrs ago
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Job Description
Principal Full-Stack Engineer at RE Partners consulting for a large banking institution. Leading development and integrating AI technologies into applications.
Responsibilities:
- 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
Requirements:
- 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
Benefits:
- Bonuses
- Commissions
- Benefits




















