Gizmo is seeking an AI Engineer to join their team in a hybrid work environment based in London. The role focuses on artificial intelligence and machine learning engineering, with specific emphasis on working with language models and prompt engineering tools. The position requires regular presence at their office located between Old Street and Liverpool Street stations, with an expectation of 4 days per week in-office collaboration. The ideal candidate will have experience with prompt evaluation tools such as LangSmith or Langfuse, and must have the legal right to work in the UK as visa sponsorship is not available for this position. This role represents an opportunity to work at the forefront of AI technology while being part of a company that values in-person collaboration and team interaction.