Fullstack Engineer

MACHINE LEARNING TECHNOLOGIES LLC; Sunnyvale (CA); On-site; USD 83,000 - 131,000; Full time

Job summary

MACHINE LEARNING TECHNOLOGIES LLC in Sunnyvale, CA seeks a skilled Full-Stack Engineer to build production-grade web apps and AI-powered agents. You will design the frontend in React, implement the backend in Python, and integrate LangChain/LangGraph for intelligent workflows.

Responsibilities include creating scalable APIs, embedding-based RAG solutions, and seamless LLM integration with tools. A strong emphasis on code quality, testing, and collaboration is required.

Qualifications

• Strong experience in React (hooks, components, state).
• Solid understanding of full-stack architecture, REST APIs and backend.
• Hands-on with LangChain for LLM app development.
• Hands-on with LangGraph for AI agent orchestration.
• Experience integrating LLM APIs (OpenAI, Anthropic, etc.).
• Knowledge of embeddings, vector databases and RAG architectures.
• Proficient with Git, version control and collaborative workflows.

Responsibilities

• Design, develop, and maintain full‑stack web apps using React frontend and Python backend.
• Build scalable, secure, production‑ready APIs and services.
• Implement AI agents and workflows with LangChain and LangGraph.
• Integrate LLMs, tool-calling, memory and multi‑step reasoning features.
• Design RAG solutions using embeddings and vector databases.
• Orchestrate agent state, control flow and execution with LangGraph.
• Ensure code quality through testing, reviews and best practices.

Skills

React

Python

REST APIs

LangChain

LangGraph

LLM APIs

RAG & embeddings

Git

Tools

Git

Job description

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Job Description

Job Overview

• Job ID:

J52374

• Job Title:

Fullstack Engineer

• Location:

Sunnyvale, CA

• Duration:

12 Months + Extension

• Hourly Rate:

Depending on Experience (DOE)

• Work Authorization:

US Citizen, Green Card, OPT-EAD, CPT, H-1B, H4-EAD, L2-EAD, GC-EAD

• Client:

To Be Discussed Later

• Employment Type:

W-2, 1099, C2C

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Job Summary

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 LangChain and LangGraph.

Responsibilities

• 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 LangChain and LangGraph
• 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 LangGraph
• Ensure code quality through testing, code reviews, and best engineering practices

Required Skills

• 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 LangChain for LLM application development
• Hands-on experience with LangGraph for building and orchestrating AI agents
• Experience integrating LLM APIs (OpenAI, Anthropic, etc.)
• Knowledge of RAG architectures, embeddings, and vector databases
• Proficiency with Git, version control, and collaborative development workflows

Equal Opportunity Employer

MACHINE LEARNING 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. MACHINE LEARNING 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 MACHINE LEARNING 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

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