Machine Learning Research Engineer (LLM & AI Agents)

Machine Learning Research Engineer (LLM & AI Agents)

Contract length: 6 months with potential to extend

Location: Hybrid 3 days per week in King's Cross

We are hiring a Machine Learning Research Engineer to join a high-performing AI research group working at the forefront of large language models and autonomous AI agents.

This is not a traditional engineering role. You will operate at the intersection of research and applied systems, building next-generation AI capabilities that push beyond current industry benchmarks.

What you will do:

• Design and build LLM-driven agents for research and automation
• Develop scalable machine learning systems using Python and PyTorch
• Run complex experiments across large datasets and models
• Collaborate with researchers and engineers to deliver measurable scientific impact
• Contribute to cutting-edge work influencing real-world AI systems

What we are looking for:

• 2–4 years’ experience in machine learning, AI, or related fields
• Strong Python and PyTorch capability
• Exposure to LLMs, generative AI, or agent-based systems
• Strong academic or research grounding (Maths, Physics, ML)
• High-output mindset with the ability to execute quickly
• High-performance, research-led team
• Direct exposure to world-class AI work

Next steps to apply: Apply now with word document CV or email your CV to rory@principlehr.com for immediate review.