Founding AI Engineer — Build Trustworthy LLMs at Scale

Built Different; Amsterdam; On-site; EUR 66,000 - 110,000; Full time

Benefits offered by this job

Equity stake

Founding-team seat

Direct line to CTO

Live product with customers

Job summary

Built Different, an Amsterdam-based AI startup, seeks an AI engineer to own the core AI that turns vast regulatory data into precise, cited answers. You will design agentic flows across documents, develop guardrails, and implement robust RAG and structured retrieval in a live product used by paying customers.

You’ll report directly to the founder, ship greenfield work, and gain founding-level ownership with meaningful equity.

Qualifications

• Shipped LLM-based systems in a real product at scale.
• Strong focus on reliability, evals and guardrails.
• Interest in formal/high-stakes domains (legal/regulatory/compliance).

Responsibilities

• Own the core AI that turns large regulation datasets into precise, cited answers.
• Design long-running agentic flows that reason across documents and stay correct end-to-end.
• Build the evaluation and guardrail layer to ensure trustworthy answers.
• Build and push RAG and structured retrieval over a large corpus.
• Set the technical direction as the first dedicated AI engineer.

Skills

LLM systems

RAG systems

Guardrails

Reliability

Tools

Claude Code

Codex

Job description

Built Different, an Amsterdam-based AI startup, seeks an AI engineer to own the core AI that turns vast regulatory data into precise, cited answers. You will design agentic flows across documents, develop guardrails, and implement robust RAG and structured retrieval in a live product used by paying customers.

You’ll report directly to the founder, ship greenfield work, and gain founding-level ownership with meaningful equity.