Backend Engineer - Python

Robotics Technologies LLC; Dallas (TX); On-site; USD 120,000 - 160,000; Full time

Job summary

A leading robotics firm based in Dallas is seeking an experienced engineer to develop and maintain critical backend tools for AI agents. The role requires 8+ years of Python expertise, including proficiency in frameworks such as FastAPI and experience with AI systems like LangChain. Ideal candidates will have skills in database management with PostgreSQL and cloud deployment using Docker and Kubernetes. This role offers a chance to work on cutting-edge technologies in a dynamic environment.

Qualifications

• 8+ years of professional experience with Python, specifically with FastAPI, Pydantic, and Asyncio.
• Hands-on experience with AI frameworks like LangChain or LlamaIndex.
• Proficiency in PostgreSQL and experience with Vector Databases.
• Experience deploying containerized applications on AWS, Azure, or GCP.

Responsibilities

• Develop and maintain backend tools that AI agents use.
• Implement complex reasoning chains and multi-agent coordination.
• Build and optimize data ingestion and retrieval systems.
• Manage long-running AI reasoning cycles with asynchronous Python.
• Design and implement secure REST or GraphQL APIs.
• Implement backend-level validation and guardrails.

Skills

Python expertise

Experience with FastAPI

Knowledge of LangChain

Database management

Docker proficiency

Understanding of cloud services

Git mastery

Tools

FastAPI

PostgreSQL

Docker

Kubernetes

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.

ROBOTICS 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. ROBOTICS 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 ROBOTICS 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