LLM Engineer (Remote, Ciudad Juarez)

Blacksmith Agency LLC; United States; Remote; MXN 600,000 - 900,000; Full time

Job summary

Blacksmith Agency LLC is seeking an LLM Engineer to own and ship the internal automation roadmap. You will build production systems on top of LLMs and work closely with engineering leadership to translate a documented automation roadmap into shipped, reliable solutions.

The role requires hands-on experience with LangChain/LangGraph and API integrations (OpenAI/Anthropic), plus strong REST/webhook knowledge and cloud deployment basics.

Qualifications

• 2+ years building production software with Python or Node.js.
• Hands-on experience with LangChain, LangGraph, CrewAI, AutoGen or similar agent frameworks.
• Proven API integration work with OpenAI or Anthropic (function calling, tool use, streaming).
• Strong understanding of REST APIs, webhooks and basic cloud deployment.
• English sufficient for async written work with a US-based team.

Responsibilities

• Own and ship the internal automation roadmap.
• Build production systems on top of LLMs.
• Implement agent workflows using LangChain, LangGraph or equivalents.
• Integrate with OpenAI and Anthropic APIs (tool use and function calling).
• Collaborate with engineering and delivery leadership to ship automation from roadmap.

Skills

Python

Node.js

LangChain

LangGraph

CrewAI

AutoGen

API integration

REST APIs

Cloud deployment

English communication

Tools

LangChain

LangGraph

CrewAI

AutoGen

OpenAI API

Anthropic API

WordPress

Figma

Job description

About The Role

Blacksmith Agency is building an AI automation layer into every part of how we work. As LLM Engineer at Blacksmith, you own and ship our internal automation roadmap. This is a builder role, not a research role. You will not be training models, you will be building production systems on top of them.

You work directly with engineering and delivery leadership to take a documented roadmap of automation workflows and turn them into shipped, working systems. This role is for someone who has already built things with LLMs and can show it.

Blacksmith Agency

• Engineering
• Full time
• Remote (Latin America and South Africa)

What You Will Build

• Agentic workflows using LangChain, LangGraph or equivalent frameworks.
• Integrations with Anthropic and OpenAI APIs including tool use and function calling.
• Internal tools that reduce manual hours across our design and development production process.
• Automation pipelines connecting WordPress, Figma, Google Workspace and our internal CMS.
• MCP server integrations as part of our broader AI stack.

What You Bring

• 2+ years building production software with Python or Node.js.
• Hands-on experience with LangChain, LangGraph, CrewAI, AutoGen or similar agent frameworks.
• Proven API integration work with OpenAI or Anthropic (function calling, tool use, streaming).
• Strong understanding of REST APIs, webhooks and basic cloud deployment.
• English sufficient for async written work with a US-based team.