Principal Engineer

Salary: £100,000 - 100,000 per year

Requirements

• Commercial experience designing and delivering AI products and solutions.
• Strong experience building LLM-based applications and AI-driven products.
• Excellent prompt engineering skills and experience designing agentic systems and workflows.
• Strong software engineering fundamentals with expertise in Python.
• Experience working with cloud environments and CI/CD practices.
• A product mindset with a focus on customer outcomes and business value.
• The ability to work across strategy, engineering and product development.
• Experience creating meaningful AI evaluation methods and custom performance metrics.
• Excellent problem-solving and communication skills.

Responsibilities

• Design, build and evolve complex AI systems using Large Language Models, prompt architectures and agentic workflows.
• Develop real-time, adaptive AI capabilities that deliver personalised and intelligent user experiences.
• Create custom evaluation frameworks and metrics to measure model performance, reliability and product effectiveness.
• Design scalable, maintainable software solutions using Python and modern cloud technologies.
• Integrate AI capabilities across platform systems, content pipelines and user-facing products.
• Prototype and productionise novel AI interactions by leveraging the latest developments in AI research.
• Implement testing, monitoring and guardrails to ensure quality, safety and observability across AI systems.
• Collaborate with cross-functional teams to translate customer and business requirements into impactful AI products.
• Mentor others and contribute to a culture of technical excellence and continuous learning.

Technologies

• AI
• CI/CD
• Cloud
• LLM
• Python
• MLOps

More

We are an innovative organisation redefining how people learn through AI, building next-generation AI products that deliver personalised, real-time learning experiences at scale. This is a UK-wide hybrid opportunity with a salary of 100k, and we offer a competitive salary and benefits package, flexible and remote-friendly working arrangements, an annual learning and development budget for conferences and training, an annual home office and IT equipment allowance, opportunities to collaborate with an international, high-performing team, and global company retreats and team events. Youll have the opportunity to work on cutting-edge AI products that are shaping the future of personalised learning.

last updated 31 week of 2026