Jobs in York

Forward Deployed Engineer, Agentic Platform (UK Public Sector)

Design, build, and deploy production-grade LLM-powered agentic workflows for enterprise clients in high-regulation sectors. Translate ambiguous business problems into secure, reliable AI agents integrated with tools, APIs, and sensitive data sources. Contribute to North, Cohere’s AI workspace platform, across the full product lifecycle while shaping cross-customer frameworks and ensuring auditability, safety, and performance.

Cohere United Kingdom

Remote Permanent

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

Senior Machine Learning Engineer

A Senior Machine Learning Engineer will lead the deployment of AI models into production environments for engineering and physics simulations, working closely with customers and cross-functional teams. The role involves building scalable ML pipelines, mentoring engineers, and traveling globally to co-develop solutions on-site. The engineer will work with 3D data, CAE/CFD/FEA models, and time-series forecasting, translating R&D into robust, reusable tools.

PhysicsX England US$200,000 – US$250,000 pa

On-site Permanent Clearance Required

Deployment Lead

Lead end-to-end deployment of a Kubernetes-based AI simulation platform into customer environments, serving as the primary technical liaison for C-suite stakeholders while building and scaling regional deployment teams. The role combines hands-on infrastructure leadership with executive engagement, ensuring deployments meet technical, security, and compliance standards in highly regulated industries such as aerospace, energy, and semiconductors.

PhysicsX England

Hybrid Permanent Clearance Required

Full-Stack Engineer (Back-End Leaning)

This role involves building and maintaining scalable backend systems that power AI-driven voice and creative tools used by millions. You'll work on enhancing platform functionality, integrating with enterprise solutions, and improving infrastructure performance and security. Collaboration with frontend, growth, and sales teams ensures customer needs are met through robust, innovative engineering.

ElevenLabs United Kingdom

Remote Permanent

Systems Architect

This role involves designing and maintaining a modern, AI-powered revenue operations stack using Salesforce as a core platform. You'll build intelligent automations with Flows and Apex, develop custom integrations including AI tooling and MCP servers, and create SQL-based data pipelines for reporting. The role bridges Salesforce administration and backend development, working closely with engineering to implement scalable GTM systems that reflect real business workflows.

ElevenLabs United Kingdom

Remote Permanent

Software Engineer, Agents & Automations

Builds and maintains the core platform for AI-powered workflows and agents within Cohere's North platform, enabling enterprises to create secure, automated business processes. Works across frontend, backend, and AI systems to deliver reliable, observable, and debuggable automation tools. Collaborates with product, design, and modelling teams to ship features that improve how customers design, run, and evaluate AI-driven workflows.

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

Member of Technical Staff, MLE (UK/EU)

This role involves working directly with enterprise customers to identify critical AI challenges and designing solutions using large language models. You'll bridge the gap between research and production by leading projects from concept to deployment, mentoring engineers, and collaborating across engineering, product, and legal teams. The position emphasizes technical leadership, cross-functional alignment, and innovation in applied machine learning for real-world enterprise applications.

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