Senior Software Engineer, Model Integration in London

Who are we? Our mission is to scale intelligence to serve humanity. We are training and deploying frontier models for developers and enterprises who are building AI systems to power magical experiences like content generation, semantic search, RAG, and agents. We believe that our work is instrumental to the widespread adoption of AI.

We obsess over what we build. Each one of us is responsible for contributing to increasing the capabilities of our models and the value they drive for our customers. We like to work hard and move fast to do what is best for our customers. Cohere is a team of researchers, engineers, designers, and more, who are passionate about their craft. Each person is one of the best in the world at what they do. We believe that a diverse range of perspectives is a requirement for building great products. Join us on our mission and shape the future!

About North: North is Cohere's cutting‐edge AI workspace platform, designed to revolutionise how enterprises use AI. It offers a secure, customisable environment that enables companies to deploy AI while maintaining control over sensitive data. North integrates seamlessly with existing workflows, providing a trusted platform that connects AI agents with workplace tools and applications.

In This Role, You Will:

• Architect and implement robust integrations for large language models into the North platform, ensuring seamless scalability and performance.
• Collaborate with modelling teams to refine LLM performance, reduce latency, and improve accuracy through iterative testing and tuning.
• Develop and maintain tools for analysing and monitoring model performance, enabling data‐driven improvements.
• Take end‐to‐end ownership of features — from initial design and planning, through implementation, testing, and delivery.
• Collaborate closely across teams, maintaining high standards for communication, documentation, and testing.

You May Be a Good Fit If You:

• Have built, shipped & maintained production systems around LLMs, including integration, prompt management, and performance analysis.
• Experience owning complex features from design to deployment, with a focus on scalability and maintainability.
• Ability to work closely with researchers, engineers, and product teams to translate insights into actionable improvements.
• Have strong coding abilities and are comfortable working across the stack.
• Take a customer‐focused, product‐minded approach to building software, prioritising outcomes and impact.
• Thrive in fast‐paced environments and can stay focused as priorities and objectives evolve.

Our Tech Stack: Our stack includes Python, TypeScript with React, Postgres, and is deployed on Kubernetes. We value strong fundamentals and a learning mindset over specific tech experience — if you are excited about AI and love building fast, you will fit right in!

If some of the above doesn’t line up perfectly with your experience, we still encourage you to apply! We value and celebrate diversity and strive to create an inclusive work environment for all. We welcome applicants from all backgrounds and are committed to providing equal opportunities. Should you require any accommodations during the recruitment process, please submit an Accommodations Request Form, and we will work together to meet your needs.

Full‐Time Employees At Cohere Enjoy These Perks:

• An open and inclusive culture and work environment.
• Work closely with a team on the cutting edge of AI research.
• Weekly lunch stipend, in‐office lunches & snacks.
• Full health and dental benefits, including a separate budget to take care of your mental health.
• 100% Parental Leave top‐up for up to 6 months.
• Personal enrichment benefits towards arts and culture, fitness and well‐being, quality time, and workspace improvement.
• Remote‐flexible, offices in Toronto, New York, San Francisco, London and Paris, as well as a co‐working stipend.
• 6 weeks of vacation (30 working days!).

Seniority level: Mid‐Senior level

Employment type: Full‐time

Job function: Engineering and Information Technology

Industries: Software Development