Machine Learning Engineer (Applied/Research)

Machine Learning Engineer / Applied and Research / London

A highly ambitious stealth AI startup is looking for an exceptional Engineer to join its lean founding team and build the intelligence layer behind a new generation of AI systems.

This is a rare opportunity to get in genuinely early , working directly with a deeply technical founding team across machine learning, NLP, knowledge representation, graph systems and information retrieval, taking ideas from research → prototype → production .

What you'll do

• Build ML-driven systems for understanding complex information
• Design knowledge representations, ontologies and

graph-based systems

• Develop advanced retrieval and search across dense, sparse and structured data
• Build NLP and information extraction pipelines
• Explore how knowledge can be

connected, validated and reasoned over

• Turn research into production-ready technology
• Shape architecture and

technical direction from day one

What they're looking for

• Experience across ML, NLP, Information Retrieval or Knowledge Representation
• Experience with

knowledge graphs, graph databases or Neo4j highly desirable

• Strong ML fundamentals and software engineering ability
• Experience taking research or experimentation into working systems
• Excellent academics or clear evidence of exceptional technical ability
• Curiosity around

LLMs, reasoning systems and semantic search

Why join?

• Join a highly technical founding team at the start of the journey
• Work on foundational AI problems, not another AI wrapper
• Own key decisions across

ML, research and architecture

• Combine deep research with hands-on engineering
• Make an outsized impact on a potentially category-defining product
• Flexible/hybrid London

Machine Learning Engineer / Applied and Research / London