Senior AI Platform Engineer

Senior AI Platform Engineer

UK Remote role

Salary up to £130,000 plus equity

This is a rare opportunity to join a growing SaaS business at a pivotal point in its technical evolution. They are investing heavily in AI and platform capability, looking for someone who can take ownership of agentic AI systems and shape how intelligent workflows are embedded across a complex product used by large, design-led organisations.

The Company

They are a well-established SaaS business building a platform that helps teams design, govern and scale design systems more effectively. Their software is used by global enterprises working with complex, large-scale systems. Operating as a product-led organisation, they work in small, autonomous squads and place a strong emphasis on thoughtful engineering, usability and long-term product quality.

The Role

As a Senior AI Platform Engineer, you will act as the AI and platform specialist across the engineering organisation, working closely with product, design and engineering teams. Your responsibilities will include:

• Designing and building agentic AI workflows that integrate deeply into an existing product platform.
• Developing systems that allow design changes to propagate intelligently across tools and documentation.
• Working across multiple squads to embed AI capability rather than isolating it in a single team.
• Making architectural decisions around cloud infrastructure, cost optimisation and scalability.
• Collaborating closely with product and design to ensure AI features deliver real user value.

Your Skills and Experience

You will bring:

• Strong commercial experience building AI-driven systems using LLM frameworks such as LangChain or LangGraph.
• Proven experience designing or contributing to impactful platform-level engineering work.
• A solid software engineering background, with exposure to backend systems and modern frontend frameworks such as React.
• Experience working with cloud infrastructure, ideally AWS, and an understanding of system design and cost efficiency.
• A product-focused mindset, with evidence of seeing features through from concept to production and iteration.

What They Offer

• The chance to define AI capability in a product used by some of the world's largest organisations.
• Clear technical influence and ownership in a growing engineering team.

How to Apply

If you are interested in building agentic AI systems within a product-focused SaaS environment, apply now to learn more about this opportunity.