Principal Fullstack Engineer (Java, React, LLMs)

TL;DR

Principal Fullstack Engineer (Java, React, LLMs): Lead the design and development of scalable backend services in Java and React-based frontend for a major US banking institution with an accent on integrating LLMs into real-world applications. Focus on building high-performance APIs, optimizing system architecture, and driving code quality and mentoring.

Location: Engineering Remote (United States)

Salary: $200,000 – $220,000 annually

Company

Fast-growing business and technology consulting company co-founded in 2019, preferred vendor for Fortune 500 companies including major US banks.

What you will do

• Lead design and development of scalable backend services in Java (Spring Boot)
• Build and optimize secure, high-performance APIs
• Guide React-based frontend architecture and support UI developers
• Integrate LLM/AI technologies (Claude preferred) into applications
• Mentor engineers, conduct code reviews, and drive best practices
• Partner with stakeholders to translate business needs into technical solutions and contribute to system design

Requirements

• Must be eligible to work in the United States
• 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 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
• Exposure to cloud platforms (AWS, Azure, GCP)
• Familiarity with CI/CD pipelines and DevOps practices

Culture & Benefits

• Global, diverse, woman-owned team with low 7% attrition rate
• Referral bonuses for bringing talented friends
• Additional compensation including bonuses and benefits
• Emphasis on "Get Shit Done", "Get Over Shit", "Give a Shit" culture