Jobs in York

Member of Technical Staff, North Modelling (Evals)

This role focuses on designing and implementing evaluation systems to measure the real-world performance of AI agents within Cohere’s North platform. You'll translate customer needs, product direction, and usage data into meaningful metrics that guide model development, ensuring improvements align with enterprise workflows like research, document editing, and automation. The position bridges product and modelling teams, requiring deep expertise in applied machine learning evaluation and a strong focus on measurement rigor.

Cohere London, United Kingdom

Hybrid Permanent

Solutions Architect - Nordics

As a founding Solutions Architect for Cohere in the Nordics, you will play a key role in growing the company's business in the region. You will work closely with account executives, partners, and the executive leadership team to demonstrate the value of Cohere's AI technology, design and deploy customer pilots, and gather feedback to enhance products.

Cohere London, United Kingdom

Remote Permanent

Research Engineer - Inference

The role involves deploying and optimizing cutting-edge AI models for real-time inference, focusing on performance, reliability, and scalability. You'll work across the stack to improve latency, throughput, and cost efficiency, building high-performance serving systems and tooling that bridge research and production. The position emphasizes autonomous problem-solving and deep optimization in GPU and ML infrastructure environments.

ElevenLabs United Kingdom

Remote Permanent

Research Engineer - Web Crawlers

This role involves building and operating large-scale, distributed web crawlers to source high-quality data for training frontier AI models. The engineer will solve challenges in content extraction, deduplication, and recrawl strategies, while designing pipelines for multilingual and multimedia content. They will also develop tooling for researchers to access and monitor crawled data efficiently.

ElevenLabs United Kingdom

Remote Permanent

Machine Learning Engineer

A Machine Learning Engineer will collaborate with simulation engineers and customers to solve complex physics and engineering challenges using AI. The role involves building scalable ML pipelines, working with 3D point-cloud and mesh data, and translating R&D into deployable tools. Engineers will also travel to customer sites globally to implement solutions on-site, ensuring practical, impactful delivery across industries like aerospace, energy, and semiconductors.

PhysicsX England £150,000 – £190,000 pa

On-site Permanent Clearance Required

Senior Forward Deployed Software Engineer

This role involves building and deploying full-stack applications that integrate AI-driven physics simulation models to solve complex engineering problems for clients across aerospace, energy, automotive, and other advanced industries. You'll work closely with customers on-site and collaborate with data scientists and engineers to design, prototype, and iterate tools that transform engineering workflows. The position emphasizes end-to-end ownership, rapid development, and translating real-world engineering challenges into impactful software solutions using modern cloud-native technologies.

PhysicsX England US$150,000 – US$250,000 pa

Hybrid Permanent

Senior Full-Stack Engineer, North Admin

This role involves building and shipping features for Cohere's AI workspace platform, North, developing autonomous agents that interact with sensitive enterprise data, and collaborating with researchers to productionize state-of-the-art models. The role requires strong full-stack coding abilities, experience in fast-paced environments, and a focus on security and privacy.

Cohere London, United Kingdom

Remote Permanent

Member of Technical Staff, Multilingual

This role involves advancing multilingual large language models through research and engineering, focusing on improving performance across diverse languages and NLP tasks. You'll design scalable systems, publish cutting-edge research, and mentor team members in a globally impactful AI initiative. The position emphasizes technical rigor, innovation in language technology, and collaboration within a world-class team.

Cohere London, United Kingdom

Remote Permanent

Member of Technical Staff, Modeling

This role involves designing, building, and scaling AI systems to serve enterprise and developer customers, with a strong emphasis on both research and production engineering. You'll work on frontier models using large-scale compute and data infrastructure, implementing novel research ideas and deploying state-of-the-art models. The position offers deep engagement with cutting-edge AI research while contributing directly to product development in a highly collaborative, remote-friendly environment.

Cohere London, United Kingdom

Remote Permanent

Member of Technical Staff, Training Performance Engineer

This role involves optimizing the performance of large language models during training, focusing on improving throughput and accelerator utilization. You'll design high-performance software, write low-level CUDA and Triton kernels, and develop profiling tools to eliminate bottlenecks. The position sits within a research-driven team working at the intersection of ML and systems engineering, leveraging large-scale infrastructure to advance NLP capabilities.

Cohere London, United Kingdom

Hybrid Permanent

Member of Technical Staff, Post-Training

Design and implement high-performance, scalable software for training and post-training of large language models, with a focus on achieving state-of-the-art results through SFT and RL techniques. Work across research and engineering to optimize training cycles and model performance on large-scale distributed systems. Collaborate with specialist teams to deliver robust, production-ready models.

Cohere London, United Kingdom

Hybrid Permanent

Member of Technical Staff, Data Analysis and Evaluation

Design and conduct data collection tasks with human annotators, evaluate dataset quality, and assess the robustness of large language models. Apply statistical methods and machine learning to improve model performance across diverse use cases in close collaboration with researchers and engineers.

Cohere London, United Kingdom

Remote Permanent

Member of Technical Staff, Agent Code

Develop and scale cutting-edge code-generating large language models and autonomous agent systems for enterprise applications. Conduct research, implement novel algorithms, and build production-ready frameworks using state-of-the-art compute infrastructure. Collaborate closely with researchers and engineers in a fast-paced, innovation-driven environment focused on advancing AI capabilities.

Cohere London, United Kingdom

Hybrid Permanent

Senior Member of Technical Staff, Safety and Security for Agents

This role focuses on improving the safety, fairness, and trustworthiness of next-generation large language models that interact with external resources and take autonomous actions. You'll design and implement data generation strategies, post-training algorithms, and evaluation methods, working closely with ML, policy, and product teams. The position emphasizes hands-on experimentation, statistical rigor, and responsible AI practices in a highly autonomous, research-driven environment.

Cohere London, United Kingdom

Hybrid Permanent

Research Engineer - Data Infrastructure

This role involves building and maintaining large-scale data infrastructure to support cutting-edge AI models, with a focus on data pipelines, curation strategies, and tooling for processing massive datasets. The engineer will develop classifiers and quality filters, design deduplication and augmentation systems, and enable efficient data exploration. The work directly impacts model performance through high-quality, scalable data engineering and infrastructure innovation.

ElevenLabs United Kingdom

Remote Permanent