AI Software Engineer (Remote, Temuco)

Blacksmith Agency LLC; Temuco; Remote; CLP 68,830,000 - 108,161,000; Full time

Job summary

Blacksmith Agency is seeking an AI Software Engineer to own and ship our internal automation roadmap, including production LLM and agent systems used by the team every day. This builder role requires a track record of shipping real systems, not just demos, and insists this be your sole full-time gig.

You will build agents and workflows with tool use, integrate with major tools, and create evals and guardrails to keep outputs safe.

Qualifications

• 2+ years building production software in Python or TS/Node.js.
• At least one LLM or agent system you built yourself that ran in production with real users.
• Hands-on tool use, evals and failure handling: validating model output, retries, human approval.
• REST APIs, webhooks and cloud deployment.
• Strong spoken English for live calls with a US team.

Responsibilities

• Develop agents and workflows with tool use and function calling on Anthropic and OpenAI, via framework or APIs.
• Create evals and guardrails to ensure safe model actions and prevent unsafe outputs.
• Build integrations connecting WordPress, Figma, Google Workspace, Slack and MCP servers.
• Develop internal tools that measurably reduce delivery, sales ops and project management effort.

Skills

Python

TypeScript / Node.js

LLM system in production

REST APIs

English communication

Tools

Anthropic API

OpenAI API

Cloud deployment

Job description

About The Role

Blacksmith Agency is building AI into every part of how we work. As AI Software Engineer at Blacksmith, you own and ship our internal automation roadmap: production LLM and agent systems that real people on our team use every day. This is a builder role, not research. You will not train models.

Blacksmith Agency

• Engineering
• Full time, your only job
• Remote (Latin America and South Africa)

About The Role

Blacksmith Agency is building AI into every part of how we work. As AI Software Engineer at Blacksmith, you own and ship our internal automation roadmap: production LLM and agent systems that real people on our team use every day. This is a builder role, not research. You will not train models.

We hire engineers who have already shipped an LLM system to production and can walk us through it in detail: what it did, how it was built, what broke and what they changed. This is a full-time seat and it has to be your only job.

What You Will Build

• Agents and workflows with tool use and function calling on Anthropic and OpenAI, with a framework or plain APIs.
• Evals that prove a change made things better, and guardrails that stop a model taking a wrong or unsafe action.
• Integrations connecting WordPress, Figma, Google Workspace, Slack and our internal systems, including MCP servers.
• Internal tools that take measurable hours off delivery, sales operations and project management.

What You Bring

• 2+ years building production software in Python or TypeScript / Node.js.
• At least one LLM or agent system you built yourself that ran in production with real users.
• Hands-on tool use, evals and failure handling: validating model output, retries, human approval.
• REST APIs, webhooks and cloud deployment.
• Strong spoken English. You will talk through technical decisions on live calls with a US team.

Not a fit if

• You freelance or contract for other clients and would keep them alongside this job.
• Your LLM work is demos, tutorials or chat prompting, or your focus is model training and research.