Anthropic

Anthropic

Open positions (203)

Research Engineer, Pretraining Scaling - London

16d ago
Anthropic

Anthropic

Anthropic's ML Performance and Scaling team is responsible for training our production pretrained models, a critical function that directly shapes the company's future and its mission to build safe, beneficial AI systems. As a Research Engineer on this team, you will ensure our frontier models train reliably, efficiently, and at scale. This demanding, high-impact role requires deep technical expertise and a passion for large-scale ML systems, operating at the boundary between research and engineering. You will work across the entire production training stack, including performance optimization, hardware debugging, experimental design, and launch coordination, responding to critical production issues during launches.

London, UK onsite
AnthropicPyTorchJAX

Research Engineer, Pretraining Scaling

16d ago
Anthropic

Anthropic

Anthropic's ML Performance and Scaling team is responsible for training the company's production pretrained models, a critical function that directly shapes the future of Anthropic and its mission to build safe, beneficial AI systems. As a Research Engineer on this team, you will ensure that frontier models train reliably, efficiently, and at scale. This role bridges the gap between research and engineering, involving work across the entire production training stack, including performance optimization, hardware debugging, experimental design, and launch coordination. During model launches, the team operates in close collaboration, addressing production issues that require immediate attention.

San Francisco, CA onsite
AnthropicPyTorchJAX

Research Engineer, Pretraining

16d ago
Anthropic

Anthropic

Anthropic is seeking a Research Engineer to join its Pretraining team, focusing on developing the next generation of large language models. This role operates at the intersection of cutting-edge research and practical engineering, aiming to build safe, steerable, and trustworthy AI systems. The mission is to ensure that transformative AI systems are aligned with human interests and are beneficial for society. The team is dedicated to pushing the boundaries of AI while prioritizing safety and ethics.

London, UK onsite
AnthropicKubernetesPython +4 more

Research Engineer, Code RL (Reinforcement Learning)

16d ago
Anthropic

Anthropic

We are seeking a Research Engineer for our Code RL team, focused on advancing AI models' capabilities in writing, editing, testing, debugging, and shipping real software. This role involves designing RL environments, coding tasks, and reward signals, as well as running training experiments on frontier models. You will diagnose model performance, improve pipeline speed and reliability, and contribute to areas like agentic coding behaviors, code correctness, and autonomous engineering. The position blends cutting-edge research with practical engineering to build high-quality, scalable AI systems.

San Francisco, CA | New York City, NY onsite
AnthropicPythonFine-Tuning +5 more

Research Engineer, Machine Learning (Reinforcement Learning)

16d ago
Anthropic

Anthropic

As a Research Engineer within Reinforcement Learning, you will collaborate with a diverse group of researchers and engineers to advance the capabilities and safety of large language models. This role blends research and engineering responsibilities, requiring you to both implement novel approaches and contribute to the research direction. You'll work on fundamental research in reinforcement learning, creating 'agentic' models via tool use for open-ended tasks such as computer use and autonomous software generation, improving reasoning abilities in areas such as mathematics, and developing prototypes for internal use, productivity, and evaluation.

San Francisco, CA | New York City, NY onsite
AnthropicPythonRust +5 more

Research Engineer, Machine Learning (Reinforcement Learning)

16d ago
Anthropic

Anthropic

As a Research Engineer within Reinforcement Learning, you will collaborate with a diverse group of researchers and engineers to advance the capabilities and safety of large language models. This role blends research and engineering responsibilities, requiring you to both implement novel approaches and contribute to the research direction. You'll work on fundamental research in reinforcement learning, creating 'agentic' models via tool use for open-ended tasks such as computer use and autonomous software generation, improving reasoning abilities in areas such as mathematics, and developing prototypes for internal use, productivity, and evaluation.

London, UK onsite
AnthropicPythonRust +5 more

Research Engineer, Knowledge Team

16d ago
Anthropic

Anthropic

Anthropic is seeking Research Engineers to reimagine how Claude interacts with external data sources. This role involves designing novel architectures for organizing information and training language models to effectively utilize these architectures. The goal is to move beyond traditional data paradigms to accommodate the capabilities of Large Language Models (LLMs).

Remote-Friendly (Travel-Required) | San Francisco, CA | Seattle, WA | New York City, NY remote
AnthropicPythonRAG +3 more

Research Engineer, Knowledge Foundations

16d ago
Anthropic

Anthropic

The Knowledge Work team at Anthropic builds the training environments and evaluations that empower Claude to excel in professional workflows, including searching, analyzing, and creating content across various tools and documents. As this work expands, the underlying systems require the same rigor as the research itself. In this role, you will design and execute experiments to enhance Claude's ability to search, retrieve, and reason over information at scale. Your responsibilities will encompass environment design, data curation, RL training, evaluation, and supporting infrastructure, requiring flexibility to address progress blockers. You will collaborate closely with researchers and other RL teams to implement capabilities that directly influence Claude's performance. We believe that true ownership and impact stem from both hardening existing environments and creating new ones, ensuring the quality of the entire stack that drives superhuman epistemics.

San Francisco, CA onsite
AnthropicPythonFine-Tuning +2 more

Research Engineer, Interpretability

16d ago
Anthropic

Anthropic

The Interpretability team at Anthropic is dedicated to understanding how large language models work, believing that a mechanistic understanding is key to making advanced AI systems safe and reliable. This role involves building and maintaining the specialized infrastructure for interpretability research, akin to performing 'neuroscience' on neural networks. The work spans the entire lifecycle of a production language model, from pretraining and inference to performance optimization, pushing the boundaries of hardware and software to address critical bottlenecks. As interpretability research matures and is applied to safety audits on frontier models, engineering and infrastructure have become crucial, making this role directly impactful on one of AI's most significant open problems.

San Francisco, CA onsite
AnthropicPythonGo +5 more

Research Engineer, Economic Research Data Platform

16d ago
Anthropic

Anthropic

As a Research Engineer on the Economic Research Data Platform team, you will design, build, and maintain critical infrastructure that powers Anthropic's research on AI's economic impact. You will work with data systems from across Anthropic, including our research tools for privacy-preserving analysis. The Economic Research team studies the economic implications of AI on individual, firm, and economy-wide outcomes, building scalable systems to monitor AI usage patterns and measure the impact of AI adoption on real-world outcomes. You will collaborate closely with teams across Anthropic, including Data Science and Analytics, Data Infrastructure, Societal Impacts, and Public Policy, to build scalable and robust data systems supporting high-leverage, high-impact research.

San Francisco, CA onsite
AnthropicAWSPython +2 more

Research Engineer, Discovery

16d ago
Anthropic

Anthropic

As a Research Engineer on our team, you will work end-to-end across the entire model stack, identifying and addressing key infrastructure blockers on the path to scientific AGI. You should have familiarity with elements of language model training, evaluation, and inference, and be eager to quickly dive into and get up to speed in areas where you are not yet an expert. This may include performance optimization, distributed systems, VM/sandboxing/container deployment, and large-scale data pipelines. Join us in our mission to develop advanced AI systems that push the frontiers of science and benefit humanity.

San Francisco, CA onsite
AnthropicAWSDocker +5 more

Research Engineer, Cybersecurity RL (Reinforcement Learning)

16d ago
Anthropic

Anthropic

The Cybersecurity RL team within Anthropic is seeking a Research Engineer to advance the capabilities of AI models in secure coding, vulnerability remediation, and defensive cybersecurity. This role combines research and engineering, requiring the design and implementation of RL environments, conducting experiments, delivering work into production training runs, and collaborating with cross-functional teams. The ideal candidate will have domain expertise in cybersecurity and an interest or experience in training safe AI models, potentially coming from backgrounds like white hat hacking, security engineering, or detection and response.

San Francisco, CA | New York City, NY onsite
AnthropicClaudeReinforcement Learning

Partner Solutions Architect, Applied AI

16d ago
Anthropic

Anthropic

As a Partners Solutions Architect on the Applied AI team, you will be a Pre-Sales architect focused on cultivating technical relationships with Global and Regional System Integrators (GSIs/RSIs) and cloud partners (AWS and GCP). Your role is to strengthen these relationships to accelerate indirect revenue, enable partner AI practices, and execute on long-term go-to-market strategy. You will act as a technical thought partner, providing expertise to understand the partner landscape, drive strategic programs, and identify opportunities to deepen partner technical capabilities. You will also collaborate with partners to develop joint solutions and codify reference architectures, and directly support customer deals where partners are the primary delivery vehicle.

Tokyo, Japan onsite
AnthropicAWSGCP

ML/Research Engineer, Safeguards

16d ago
Anthropic

Anthropic

Anthropic is seeking ML Engineers and Research Engineers to join the Safeguards ML team. The primary focus of this role is to develop systems that detect and mitigate misuse of AI systems, ranging from individual policy violations to sophisticated coordinated attacks. You will build defenses to ensure product safety as AI capabilities advance, protect user well-being, and guarantee appropriate model behavior across various contexts. This work is crucial for Anthropic's Responsible Scaling Policy commitments.

San Francisco, CA | New York City, NY onsite
AnthropicPythonReinforcement Learning +1 more

Manager of Applied AI Architecture, Enterprise Tech

16d ago
Anthropic

Anthropic

As the manager of the Solutions Architect team within Applied AI Enterprise Tech, you will drive the adoption of frontier AI in partnership with the go-to-market organization. You will leverage your technical skills and consultative sales experience to drive positive AI transformation that addresses customer business needs, meets their technical requirements, and provides a high degree of reliability and safety. You will be responsible for leading and growing the pre-sales team that partners with account executives to help companies understand and deploy Anthropic’s products, including Claude for Enterprise, Claude Code, and the API. This includes hiring great people, establishing scalable processes, and representing Anthropic directly at strategic customer engagements.

$10k - $50k

San Francisco, CA | New York City, NY onsite
AnthropicGoClaude

Manager of Applied AI Architecture, Startups

16d ago
Anthropic

Anthropic

As a Manager of Startups Applied AI Architects at Anthropic, you will lead a team of technical architects to help startups build AI-native products using the Claude Developer Platform. Your team will earn the trust of founders and engineers by supporting their technical ambitions from early product to scale. This role requires a proven technical go-to-market leader who can build teams that move at startup speed, earn the trust of technical buyers, and turn early engagements into lasting partnerships. You will define playbooks for nurturing and scaling new customers, set the bar for technical excellence, and grow your team, while staying connected to customer needs.

San Francisco, CA onsite
AnthropicPythonGo +1 more

Manager of Applied AI Architecture, Partnerships

16d ago
Anthropic

Anthropic

Anthropic is building reliable, interpretable, and steerable AI systems to be safe and beneficial for users and society. As the Manager of the Partnerships Applied AI Solutions Architect team, you will drive the adoption of frontier AI by enabling the deployment of Anthropic's products through system integrators, cloud partners, and strategic technology partners. You will build and lead a team of Partner Solutions Architects, establish processes for partner-led pre-sales engagements, and represent Anthropic as the technical lead on key partnerships. Collaborating with Sales, Partnerships, Product, and Engineering, you will help partners integrate AI, accelerate revenue, and execute go-to-market strategies while upholding safety standards.

San Francisco, CA | New York City, NY | Seattle, WA onsite
AnthropicAWSAzure +3 more

Manager of Applied AI Architecture, Enterprise Tech (Cyber)

16d ago
Anthropic

Anthropic

As the manager of the Applied AI Architect, Enterprise Tech (Cyber) team at Anthropic, you will drive the adoption of frontier AI across the cybersecurity industry. You will enable leading security companies to build Claude into their detection, response, and security operations products via Anthropic's API, Claude Code, and Claude for Enterprise. Leveraging your technical skills and consultative sales experience, you will help security vendors ship AI-powered capabilities that meet the industry's exacting standards for reliability, accuracy, and safety. You will be responsible for leading and growing the team, establishing processes and best practices for pre-sales engagements, and representing Anthropic as a technical lead on important partnerships. In collaboration with Sales, Product, and Engineering, you will help enterprise tech partners incorporate leading-edge AI systems into their products, using your communication skills to explain complex solutions to both technical and non-technical audiences. You will play a critical role in identifying opportunities to innovate and differentiate our AI systems while maintaining our best-in-class safety standards.

New York City, NY; San Francisco, CA | New York City, NY; Seattle, WA onsite
AnthropicGoPrompt Engineering +1 more

Head of ANZ, Applied AI

16d ago
Anthropic

Anthropic

As the founding leader of Applied AI Solutions Architecture in ANZ, you will drive the adoption of frontier AI by enabling the deployment of Anthropic's products across Australian and New Zealand enterprises. You'll leverage your technical skills and consultative sales experience to drive positive AI transformation that addresses customer business needs and technical requirements, ensuring high reliability and safety. You will be responsible for building and leading the ANZ Applied AI team, establishing processes and best practices for technical pre-sales engagements, and representing Anthropic as a technical lead on important partnerships. In collaboration with Sales, Product, and Engineering teams, you'll help enterprise partners incorporate leading-edge AI systems into their products and platforms, using excellent communication skills to explain complex solutions to diverse audiences and identifying opportunities to innovate while maintaining safety standards.

Sydney, Australia onsite
AnthropicGoPrompt Engineering +2 more

Head of Applied AI Architecture, Beneficial Deployments

16d ago
Anthropic

Anthropic

As the Global Leader of Applied AI Architects for Beneficial Deployments, you will lead a team of Applied AI Architects who serve as the primary technical partners to mission-driven organizations and non-profits adopting Claude. You'll build and scale a world-class, globally distributed team that turns frontier AI into real impact in education, global health, economic mobility, and life sciences—while shaping how Anthropic's most important societal partnerships are designed and delivered. You'll combine deep technical fluency with the leadership judgment needed to operate across segments, regions, and partner types. You'll set the vision for how we scale our expertise and be accountable for the team, processes, and cross-functional relationships that make that possible. In collaboration with various teams, you'll help ensure our partners incorporate Claude responsibly and effectively, representing Anthropic as a senior technical leader on visible partnerships while maintaining safety standards.

$30k - $40k

San Francisco, CA | New York City, NY onsite
AnthropicPythonPrompt Engineering +1 more

Get new AI jobs in your inbox

A weekly digest of the newest AI engineering roles.

© 2026 AI Job Board. All rights reserved.