Fullstack Engineer

We are looking for a highly skilled
Full-Stack Engineer who can build and maintain
production-grade web applications while also designing and implementing
AI-powered agents using
Lang Chain and Lang Graph
.

• Design, develop, and maintain
  full-stack web applications using
  React (frontend) and
  Python (backend)
• Build scalable, secure, and production-ready
  APIs and backend services
• Implement
  AI agents and intelligent workflows using
  Lang Chain and Lang Graph
• Integrate
  LLMs into applications, including tool-calling, memory, and multi-step reasoning
• Design and implement
  RAG-based solutions using embeddings and vector databases
• Orchestrate agent state, control flow, and execution using Lang Graph
• Ensure code quality through
  testing, code reviews, and best engineering practices

• Strong experience in
  React
  (modern hooks, component design, state management) and
  Python
  (FastAPI / Flask / Django)
• Solid understanding of
  full-stack architecture
  , REST APIs, and backend development
• Hands-on experience with
  Lang Chain for LLM application development
• Hands-on experience with
  Lang Graph for building and orchestrating AI agents
• Knowledge of
  RAG architectures
  , embeddings, and vector databases
• Proficiency with
  Git
  , version control, and collaborative development workflows

ETHEREUM TECHNOLOGIES LLC is an equal opportunity employer inclusive of female, minority, disability and veterans, (M/F/D/V). Hiring, promotion, transfer, compensation, benefits, discipline, termination and all other employment decisions are made without regard to race, color, religion, sex, sexual orientation, gender identity, age, disability, national origin, citizenship/immigration status, veteran status or any other protected status. ETHEREUM TECHNOLOGIES LLC will not make any posting or employment decision that does not comply with applicable laws relating to labor and employment, equal opportunity, employment eligibility requirements or related matters.

Nor will ETHEREUM TECHNOLOGIES LLC require in a posting or otherwise U.S. citizenship or lawful permanent residency in the U.S. as a condition of employment except as necessary to comply with law, regulation, executive order, or federal, state, or local government contract