Senior Backend Engineer for AI Agents (Python/FastAPI)

Quantum Technologies. LLC

Dallas, Northern (TX, KY)

Hybrid

USD 140,000 - 210,000

Full time

6 hours ago

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Job summary

Quantum Technologies LLC in Dallas seeks an experienced backend engineer to design and maintain the systems powering AI agents. You will build APIs, data connectors, and tooling used across the platform.

You will implement orchestration with LangChain and related frameworks, optimize vector-based data pipelines, and ensure secure, scalable cloud deployments. Candidates should have 8+ years in Python, hands-on with FastAPI, Pydantic, Asyncio, and experience with LangChain/LlamaIndex; strong

Qualifications

8+ years of professional Python development experience.
Hands-on with FastAPI, Pydantic, and Asyncio.
Experience with LangChain or LlamaIndex.
Proficient in PostgreSQL and vector databases.
Experience deploying on AWS/Azure/GCP and CI/CD.

Responsibilities

Develop and maintain backend tools and APIs used by AI agents.
Implement orchestration with LangChain, LangGraph, or CrewAI.
Build and optimize RAG data ingestion and retrieval pipelines with vector databases.
Manage asynchronous tasks using Asyncio, FastAPI, Celery, or Redis.
Design secure, high-performance REST or GraphQL APIs between backend and frontend.
Implement backend safety guards and validation to keep autonomous actions within policy.