AI Research Scientist Jobs

PhysicsX · London

Own a research work-stream at the frontier of 3D geometry representation and generation, designing and training generative models (VAEs, diffusion, flow matching, autoregressive latent models) over point-cloud, mesh, voxel and implicit-field data. Work against production numerical solvers so model quality is measured in validated physics, and close the coupling between geometry and physics for physically-driven shape generation alongside ML, simulation engineers and customers.

Isomorphic Labs · London

Lead and contribute to core machine learning research applying large language models to drug discovery, developing and refining LLM-driven approaches across biology and chemistry problems. Work spans post-training, reasoning, test-time scaling, tool-use, alignment, agents, reinforcement learning and fine-tuning, with model training and inference engineering at scale. Interdisciplinary collaboration with research scientists and engineers, plus technical mentorship and project leadership depending on experience.

Isomorphic Labs · London

Builds greenfield machine learning models and algorithms for drug discovery, designing new architectures, running experiments, and scaling training and inference frameworks. Works in an interdisciplinary team of ML scientists and domain experts, with opportunities to lead projects and mentor others depending on experience.

Faculty · London

Lead original technical research in AI safety, steering projects from research question to publication. Work spans interpretability, steering vectors, goal drift, machine unlearning and uncertainty calibration for transformer LLMs and agentic systems, with outputs informing frontier labs and government institutes. Involves building reproducible research code in PyTorch and Python.

Faculty · London

Leads a small, high-agency research team setting the scientific agenda for AI safety, with a focus on large language models and safety-critical systems. Involves conducting and overseeing red-teaming and evaluations in high-risk domains such as CBRN and cybersecurity, publishing at top conferences, and mentoring researchers while aligning work with commercial goals.

University of Oxford · Oxford · £49,119 – £58,265 pa

Develops and validates machine learning models for disease forecasting and simulation models for scenario exploration, using large-scale epidemiological, genomic and behavioural data. Builds decision-support tools and reproducible pipelines, integrating them into public health workflows with partners in Nigeria and the DRC through co-design workshops and training.

AI Security Institute · London

Conducts novel research to detect and evaluate misalignment in frontier AI systems, including loss-of-control risks like deceptive alignment, research sabotage and reward-seeking. Builds alignment evaluations and open-source tooling, runs pre-deployment tests, and reports findings to frontier AI labs and governments. Sits within AISI's wider Red Team, with hires open at junior through principal level.

Anthropic · London · £260,000 – £370,000 pa

Conducts exploratory machine learning experiments to understand and steer powerful AI systems, focusing on AI control and alignment stress-testing. Collaborates with interpretability, fine-tuning, and red team groups, running multi-agent RL and jailbreak evaluations. Requires at least 25% presence in London with occasional San Francisco travel.