Blacksmith Agency is building AI into every part of how we work. As AI Developer 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.
Blacksmith Agency
- Engineering
- Full time, your only job
- Remote (Latin America and South Africa)
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 Word Press, 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 Type Script / 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.