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AI Research Engineer (Accepting only PhD candidates)

QualityAI
London, UK Posted Nov 10, 2026
On-site

About this role

AI Research Engineer

We are seeking a highly motivated Contract Worker to join our research team working on self-improving agentic systems — a cutting-edge area at the intersection of reinforcement learning, LLM post-training, and autonomous AI research agents. We develop agentic systems that improve their own performance over time, combining reinforcement learning and LLM post-training with agents capable of writing, evaluating, and optimizing code. A central goal is building AI research agents that can autonomously propose, run, and analyze experiments, accelerating the pace of AI research itself.

Self-Improving Agentic Systems and AI Research Agents Responsibilities

  • Assist in the design, implementation, and evaluation of self-improving agentic systems and AI research agents.
  • Contributes to research on reinforcement learning and LLM post-training methods, including reward design, preference optimization, and RL from execution feedback.
  • Collaborate with senior researchers to explore new approaches for autonomous experimentation, code generation, and optimization.
  • Help build and maintain evaluation harnesses and benchmarks for agentic capabilities.
  • Help document findings and prepare research outputs for publication.

Minimum Qualifications

  • Has completed a Ph.D. degree or is currently pursuing a PhD in Machine Learning, Artificial Intelligence, Computer Science, Information or Multimedia Retrieval, Reinforcement Learning, Mathematics or relevant technical field
  • Experience with Python, C++, C, Java or other related languages
  • Experience with deep learning frameworks such as PyTorch or TensorFlow
  • Experience building systems based on machine learning and/or deep learning methods

Preferred Qualifications

  • Eagerness to learn about advanced AI concepts such as reinforcement learning, LLM post-training, agentic scaffolding, and self-improvement
  • Excellent problem-solving and communication skills

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