Latest OpenAI Jobs

AI Deployment Engineer - Startups

This role involves working closely with startups to optimize their AI systems, identify failure modes, and translate these insights into improvements for OpenAI’s research and products. You will collaborate on complex workflows, design evaluations, and build tools that enhance model behavior and customer value.

OpenAI London, United Kingdom

Hybrid Permanent

Manager, AI Deployment Engineering - Codex

This role involves leading a team of AI Deployment Engineers to help customers integrate Codex into their software development workflows, from experimentation to production. Responsibilities include mentoring engineers, defining deployment strategies, and collaborating with cross-functional teams to ensure successful AI adoption.

OpenAI London, United Kingdom

Hybrid Permanent

Data Processing Developer Technology Intern - 2026

This internship involves researching and developing GPU acceleration techniques for AI workloads, collaborating with technical experts to optimize complex algorithms, and contributing to the design of next-generation hardware and software. You will also publish optimization techniques and engage with the developer community.

NVIDIA Bristol, United Kingdom

On-site Internship

Data Processing Developer Technology Intern - 2026

As a Data Processing Developer Technology Intern, you will research and develop GPU acceleration techniques for AI workloads, collaborate with technical experts to optimize complex algorithms, and contribute to the design of next-generation hardware and software. You will also publish optimization techniques and engage with the developer community through blogs and conferences.

NVIDIA France

On-site Internship

Research Engineer, RL Scaling Science

This role involves designing and running large-scale reinforcement learning experiments to understand scaling effects across model size, compute, and task horizon. The engineer will build benchmarks for long-horizon RL, debug system-level issues at the research-infrastructure boundary, and translate validated findings into production training recipes. Work is highly collaborative, sitting at the intersection of empirical research and large-scale systems engineering.

Anthropic London, United Kingdom £375,000 – £640,000 pa

Hybrid Permanent

Applied AI Security Architect

This role involves serving as a trusted security expert for Anthropic's enterprise customers, engaging with CISOs and security leaders to address critical security and compliance questions. You will lead technical discussions on data protection, network architecture, and regulatory standards, and collaborate with internal teams to influence product development and create security-focused materials.

Anthropic London, United Kingdom

On-site Permanent

Research Engineer, Machine Learning (Reinforcement Learning)

This role involves collaborating with researchers and engineers to advance the capabilities and safety of large language models through reinforcement learning. Responsibilities include developing core RL infrastructure, designing novel training environments, and optimizing performance across the stack.

Anthropic London, United Kingdom

On-site Permanent

Research Engineer, Machine Learning (RL Velocity)

As a Research Engineer on the RL Velocity team, you will focus on building and improving the RL training infrastructure, identifying and removing bottlenecks, and partnering with researchers and engineering teams to enhance the efficiency and reliability of Anthropic's AI systems. This role involves high-leverage work that impacts the entire organization's ability to iterate and improve models quickly.

Anthropic London, United Kingdom £370,000 – £630,000 pa

Hybrid Permanent

Research Engineer, Pretraining

This role involves conducting research and implementing solutions in areas like model architecture, algorithms, and data processing for large language models. You will lead small projects, collaborate on larger initiatives, and optimize training infrastructure to ensure AI systems are safe, steerable, and trustworthy.

Anthropic London, United Kingdom

On-site Permanent

Research Engineer, Pretraining Scaling - London

This role involves owning critical aspects of Anthropic's production pretraining pipeline, including performance optimization, debugging complex issues, and improving training efficiency. The position is highly operational, requiring responsiveness to incidents and flexibility during model launches, with significant learning opportunities.

Anthropic London, United Kingdom

On-site Permanent

[Expression of Interest] Research Engineer / Scientist, Alignment - London

As a Research Engineer on the Alignment Science team, you will design and execute machine learning experiments to ensure AI systems are safe, helpful, and aligned with human values. You will collaborate with other teams to test and improve safety techniques, develop evaluation tools, and contribute to research papers and presentations.

Anthropic London, United Kingdom £260,000 – £370,000 pa

Hybrid Permanent

Staff Software Engineer, AI Reliability Engineering

This role involves developing and maintaining the reliability of Anthropic's AI systems, particularly Claude. Responsibilities include setting service level objectives, implementing monitoring systems, and leading incident response. The position offers cross-functional exposure and collaboration across multiple teams and cloud providers.

Anthropic London, United Kingdom £325,000 – £390,000 pa

Permanent

Staff Software Engineer, Inference

As a Staff Software Engineer on the Inference team, you will work on building and maintaining critical systems that serve Claude to millions of users. Your responsibilities will include optimizing compute efficiency, enabling breakthrough AI research, and tackling complex distributed systems challenges across multiple cloud platforms and AI accelerators.

Anthropic London, United Kingdom £325,000 – £390,000 pa

Hybrid Permanent

Anthropic Fellows Program, The Anthropic Institute (Economics & Policy)

Fellows will engage in full-time, 4-month research projects aligned with Anthropic's AI safety and societal impact goals. They will receive direct mentorship, access to shared workspaces, and a weekly stipend, with the potential to produce public research outputs.

Anthropic United Kingdom

Hybrid Internship

Anthropic Fellows Program, AI Safety

Fellows will engage in full-time, 4-month research projects focused on AI safety, working with Anthropic's mentorship and resources. The program includes access to a shared workspace, a weekly stipend, and funding for compute and research expenses. Fellows will produce public outputs like papers and contribute to the broader AI safety community.

Anthropic United Kingdom

Hybrid Internship