LLM Applications Engineer
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About The Role
Blacksmith Agency is building AI into every part of how we work. As LLM Applications 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.
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 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.
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Pretoria, Gauteng, South Africa Blacksmith Agency LLC Remote Full-timeBlacksmith Agency LLC is seeking an LLM Applications Engineer to own and ship our internal automation roadmap. This builder role requires a track record of shipping production LLM systems and a single full-time commitment.You will build agents and workflows using Anthropic/OpenAI, create guardrails and evals, and implement integrations with major tools and...
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