Backend Engineer - Python

Quantum Technologies. LLC; Dallas (TX); On-site; USD 100,000 - 130,000; Full time

Job summary

A technology company is seeking a skilled backend developer with deep expertise in Python and extensive experience with AI frameworks like LangChain. You will build and maintain APIs and others tools integral to the operation of AI agents. Qualifications include strong skills in PostgreSQL, experience with containerization using Docker and Kubernetes, and a solid understanding of distributed systems. This is a full-time opportunity in Dallas, Texas, with a focus on ensuring ethical AI practices.

Qualifications

• 8+ years of professional experience in Python development.
• Hands-on experience using AI frameworks like LangChain.
• Proficiency in database management systems, specifically PostgreSQL.

Responsibilities

• Develop and maintain backend tools including APIs and database connectors.
• Implement orchestration frameworks for multi-agent coordination.
• Optimize data ingestion and retrieval systems using Vector Databases.

Skills

Python expertise

AI frameworks (LangChain, LlamaIndex)

PostgreSQL proficiency

Containerization (Docker, Kubernetes)

Version control (Git)

Distributed systems understanding

Tools

FastAPI

Asyncio

AWS

Azure

GCP

Job description

Responsibilities

• Agent Logic & Tooling:Develop and maintain the backend "tools" (APIs, scrapers, database connectors) that AI agents use to perform tasks.
• Orchestration Implementation:Use frameworks like LangChain, LangGraph, or CrewAIto implement complex reasoning chains and multi-agent coordination.
• RAG Pipeline Engineering:Build and optimize data ingestion and retrieval systems using Vector Databases, ensuring the agent has the right context at the right time.
• Asynchronous Task Management:Manage long-running AI reasoning cycles using asynchronous Python (FastAPI/Asyncio) and task queues like Celery or Redis.
• API Architecture:Design and implement secure, high-performance REST or GraphQL APIs that serve as the interface between the agentic backend and the frontend.
• Safety & Guardrails:Implement backend-level validation and guardrails to ensure that autonomous agent actions remain within secure and ethical boundaries.

Technical Requirements

• Python Expertise:8+ years of professional experience with Python, specifically with FastAPI, Pydantic, and Asyncio.
• AI Frameworks:Hands-on experience with LangChainor LlamaIndex.
• Database Management:Proficiency in PostgreSQLand experience with Vector Databases.
• Cloud & DevOps:Experience deploying containerized applications using Dockerand Kuberneteson AWS, Azure, or GCP.
• Scalability:Understanding of distributed systems and how to handle the high latency and compute requirements of LLM-based applications.
• Version Control:Mastery of Git and CI/CD best practices.

Preferred Qualifications

• Knowledge of Prompt Engineeringfrom a programmatic perspective (dynamic prompt templating).
• Familiarity with observability tools for AI, such as LangSmithor Arize Phoenix.

QUANTUM 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. QUANTUM 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 QUANTUM 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