Middle, Senior AI Engineer (LLM agents)
AI assistants with tools, evaluations and approval points. Guardrails and cost limits.
Where
Fully remote, 100%. Applicants must live in the EU/EEA, the United Kingdom, Switzerland, the United States, Canada or Thailand.
The work
- AI assistants (LLM agents) with tools, evaluations and approval points.
- Guardrails and cost limits around them.
What you bring
- Middle or senior experience building LLM agents.
How we hire
Apply with the form on oll4.com. A person reads every application. If your experience fits the role, we send you a practical challenge: a small codebase from a fictional company, with a few real problems to fix, one small feature to build, a pull request to review and a short note on your decisions. The clock starts only when you press Start. Use whatever AI assistant you use at work, and tell us how you used it. A person reads every submission, we invite strong ones to a 30-minute call about their choices, and every submitter gets our answer.
About OLL4
OLL4 (INTRATRADE SINGLE MEMBER P.C.) is a founder-led systems studio in London and Bangkok. We build AI assistants, workflow automation and the controls around them (approvals, logs, rollback) for teams that run shops, catalogs and back-offices.