AI Developer (Remote, Leon)

Blacksmith Agency LLC; León; Hybrid; GBP 90,000 - 120,000; Full time

Job summary

Blacksmith Agency LLC is hiring an AI Developer to own and ship our automation roadmap. You will build production systems on top of AI, not just research models, and work closely with engineering leadership to turn a documented roadmap into shipped automation workflows.

You should have hands-on experience with LangChain, LangGraph, and API integrations with OpenAI or 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

• Turn automation roadmaps into shipped, production systems.
• Build agentic workflows using LangChain, LangGraph or equivalent frameworks.
• Integrate OpenAI or Anthropic APIs including tool use and function calling.
• Develop automation pipelines connecting WordPress, Figma, Google Workspace and internal CMS.

Skills

Python

Node.js

LangChain

LangGraph

CrewAI

AutoGen

OpenAI API

Anthropic API

REST APIs

Webhooks

Cloud deployment

Tools

LangChain

LangGraph

OpenAI API

Anthropic API

API integrations

Job description

About The Role

Blacksmith Agency is building an AI automation layer into every part of how we work. As AI Developer 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.

Blacksmith Agency

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

About The Role

Blacksmith Agency is building an AI automation layer into every part of how we work. As AI Developer 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.

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.