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Quantum Technologies LLC Logo
Fullstack Engineer

Quantum Technologies LLC

 

Sunnyvale, CA, USA

Posted On: 15+ days ago
Experience: 5+ years
Availability: Onsite
Openings: 2
Category: Fullstack Engineer
Tenure: No Preference/Any
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Description

Build and maintain production-grade web applications while designing AI-powered agents using LangChain and LangGraph.

This role is on-site.

Responsibilities

  • Design and develop full-stack web applications using React for the frontend and Python for the backend.
  • Build scalable, secure, and production-ready APIs and backend services.
  • Implement AI agents and intelligent workflows using LangChain and LangGraph.
  • Integrate LLMs into applications, handling tool-calling, memory, and multi-step reasoning.
  • Ensure code quality through testing, code reviews, and engineering best practices.

Required Skills

  • Strong experience with React (modern hooks, component design, state management).
  • Proficiency in Python (FastAPI, Flask, or Django).
  • Hands-on experience with LangChain for LLM application development.
  • Experience with LangGraph for orchestrating AI agent state and control flow.
  • Experience integrating LLM APIs (OpenAI, Anthropic, etc.).
  • Knowledge of RAG architectures, embeddings, and vector databases.
  • Solid understanding of full-stack architecture and REST APIs.
  • Proficiency with Git and collaborative development workflows.

Preferred Skills

  • 5+ years of experience in full-stack engineering.

Education

Any Graduate

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