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AI engineer for production software teams

CEO & Co-Founder

Software Engineer

AI minister: UK sets sights on global AI leadership, not Silicon Valley emulation

Little Britain squares up to America’s big AI beasts at London Tech Week

Cosine secures industry backing for Britain’s first sovereign frontier model

Cosine Forms Coalition to Build Britain's First Sovereign AI Model

ML Systems Engineer - Model Training and Infrastructure (SWE-focused LLMs)

Cosine is building autonomous AI engineers and Lumen models that can understand, write and maintain software within real development workflows. The ML Systems Engineer will build model-training environments, data-generation pipelines, reinforcement-learning infrastructure and evaluation systems for software-engineering models, working across machine learning, software engineering, data and infrastructure.

Forward Deployed Product Engineer

Cosine is the UK's frontier AI lab building autonomous software engineering systems, agent tooling, and enterprise-grade coding products. The Forward Deployed Product Engineer will build user-facing applications and integrations, work directly with customers to design and deploy solutions, and translate advanced AI capabilities into reliable developer workflows.

Senior Infrastructure Engineer

Cosine is a venture-backed Silicon Valley startup seeking a Senior Infrastructure Engineer to manage the core infrastructure for their products. The role involves designing and operating Kubernetes-based platforms, building deployment and tooling layers, ensuring reliability and operations, and collaborating with product and research teams.

Product Engineer

Cosine is pioneering the integration of human reasoning into artificial intelligence, and they are seeking a Product Engineer to build end-user products that enhance developers’ capabilities. The role involves working with cutting-edge technology and requires a strong focus on developer experience.

Software Engineer, Cloud Infrastructure

Cosine builds infrastructure, tooling, and products that make advanced AI systems practical, powerful, and widely accessible. The Cloud Infrastructure engineer develops and maintains the infrastructure abstractions that allow Cosine to ship products reliably, securely, and at scale.