Backend Engineer - Python

Artifintech; Dallas (TX); On-site; USD 140,000 - 190,000; Full time

Job summary

ARTIFICIAL INTELLIGENCE TECHNOLOGIES LLC in Dallas seeks a senior backend engineer to develop and maintain backend tools powering AI agents. You will implement orchestration, RAG pipelines, and secure REST/GraphQL interfaces for high reliability and performance.

Required: 8+ years Python, FastAPI, Asyncio; Docker/Kubernetes on cloud; LangChain/LlamaIndex experience; PostgreSQL and vector databases; Git and CI/CD practices.

Qualifications

• 8+ years of professional Python backend experience with FastAPI, Pydantic and Asyncio.
• Experience building APIs, data pipelines, and scalable backend services.
• Hands-on with LangChain or LlamaIndex in AI agent tooling.

Responsibilities

• Develop and maintain backend tools, APIs, scrapers, and data connectors.
• Implement orchestration frameworks for multi-agent coordination.
• Build and optimize data ingestion and retrieval systems with vector databases.
• Ensure secure, high-performance REST/GraphQL interfaces and guardrails.

Skills

Python

FastAPI

Asyncio

Pydantic

Git

CI/CD

Distributed systems

PostgreSQL

LangChain

LlamaIndex

Tools

Docker

Kubernetes

AWS

Azure

GCP

Redis

Celery

Job description

• Agent Logic & Tooling:Develop and maintain the backend "tools" (APIs, scrapers, database connectors) that AI agents use to perform tasks.
• Orchestration Implementation:Use frameworks likeLangChain, LangGraph, or CrewAIto implement complex reasoning chains and multi-agent coordination.
• RAG Pipeline Engineering:Build and optimize data ingestion and retrieval systems usingVector 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 withPython, specifically withFastAPI, Pydantic, and Asyncio.
• AI Frameworks:Hands-on experience withLangChainorLlamaIndex.
• Database Management:Proficiency inPostgreSQLand experience withVector Databases.
• Cloud & DevOps:Experience deploying containerized applications usingDockerandKuberneteson 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 ofPrompt Engineeringfrom a programmatic perspective (dynamic prompt templating).
• Familiarity with observability tools for AI, such asLangSmithorArize Phoenix.

ARTIFICIAL INTELLIGENCE 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. ARTIFICIAL INTELLIGENCE 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 ARTIFICIAL INTELLIGENCE 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