AI/ML Engineer

Job Description

About the Role

We are looking for an experienced AI/ML Engineer to join our UK team. This is not a research role. You will build and ship AI-powered features that real users interact with every day, including smart candidate screening, matching, and interview automation. We want someone who has shipped large language models to production and knows how to make them reliable, observable, and useful. Hybrid work in the London area (United Kingdom).

What You Will Do

• Design and build LLM-powered pipelines using LangChain and LangSmith

• Integrate and optimize API calls to OpenAI, Anthropic, and Hugging Face models

• Build and maintain data pipelines that feed model training, evaluation, and inference

• Monitor and improve model performance in production using structured evals and tracing

• Apply solid AI engineering principles across the full lifecycle: from prompt design to deployment

• Work closely with product and engineering to ship features end to end

What We Are Looking For

• 3+ years of experience in AI/ML engineering

• Strong hands-on experience with LLMs and generative AI shipped to real users

• Proficient with LangChain and LangSmith for pipeline building and observability

• Experience working with OpenAI and/or Anthropic APIs

• Familiarity with the Hugging Face ecosystem

• Solid understanding of data pipeline design

• Deep knowledge of AI engineering principles: if you have read Chip Huyen’s AI Engineering, you will feel right at home

• Claude certification is a plus

• Based in the London area or open to relocating within the United Kingdom

Salary:£120,000–£150,000 gross/year