Senior GenAI & LLM Engineer - Backend & RAG

Quantum Technologies. LLC; Sunnyvale (CA); On-site; USD 150,000 - 210,000; Full time

Job summary

Quantum Technologies. LLC is seeking an experienced AI Developer to design, build, and deploy AI-powered applications using Python, GenAI, and LLMs. You will architect scalable backend services and contribute to production-grade AI platforms.

You will work on RAG pipelines, AI agents, and integrations with vector databases and enterprise APIs, leveraging Docker, Kubernetes, and cloud services to deliver reliable, secure solutions at scale.

Qualifications

• 6+ years of software development experience with Python.
• Hands-on Generative AI, LLMs, NLP, and Prompt Engineering.
• Strong experience implementing RAG architectures and AI-powered applications.
• Experience with LangChain, LangGraph, CrewAI, or similar AI frameworks.
• Knowledge of vector databases and OpenAI/Azure OpenAI APIs.

Responsibilities

• Design, develop, and maintain AI-powered applications, data pipelines, and microservices using Python.
• Build and implement Generative AI solutions using Large Language Models (LLMs).
• Develop Retrieval-Augmented Generation (RAG) pipelines and AI agent workflows.
• Implement AI agents using frameworks such as LangChain, LangGraph, and CrewAI.
• Integrate LLMs with vector databases, enterprise data sources, and external REST APIs.
• Perform prompt engineering and optimize LLM responses for accuracy and performance.
• Develop backend services and APIs using FastAPI, Flask, or Django.
• Deploy and manage AI applications using Docker and cloud platforms such as AWS, Azure, or GCP.
• Optimize application performance, scalability, reliability, and resource utilization.
• Collaborate with cross-functional teams to deliver enterprise‑grade AI solutions.
• Follow software engineering best practices, including testing, version control, and documentation.
• Experience developing autonomous AI agents and multi‑agent systems.
• Knowledge of machine learning and deep learning concepts.
• Experience with model deployment, monitoring, and optimisation.
• Familiarity with Kubernetes and cloud‑native application deployment.
• Experience building enterprise‑level AI solutions and scalable architectures.
• Strong analytical, problem‑solving, and communication skills.

Skills

Python programming

Generative AI

LLMs

NLP

Prompt Engineering

Backend development

RESTful APIs

AI architectures

Distributed systems

Analytics & problem solving

Tools

Docker

Kubernetes

LangChain

LangGraph

CrewAI

Pinecone

ChromaDB

FAISS

Weaviate

OpenAI API

Job description

Quantum Technologies. LLC is seeking an experienced AI Developer to design, build, and deploy AI-powered applications using Python, GenAI, and LLMs. You will architect scalable backend services and contribute to production-grade AI platforms.

You will work on RAG pipelines, AI agents, and integrations with vector databases and enterprise APIs, leveraging Docker, Kubernetes, and cloud services to deliver reliable, secure solutions at scale.