Senior AI Engineer / AI Technical Lead

• Design the architecture for new AI-powered features and services.
• Build production AI/ML systems using Python, NLP and LLM technologies.
• Develop intelligent document-processing and information-extraction capabilities.
• Integrate LLMs and retrieval-based approaches into existing product workflows.
• Design systems that incorporate user feedback to improve recommendations over time.
• Make architectural decisions around scalability, reliability, latency and cost.
• Build and optimise data pipelines, model evaluation and monitoring.
• Work closely with our CTO and wider engineering team, providing technical direction while remaining hands-on.

Technologies:

• AI
• Architect
• Cloud
• CTO
• Fine-tuning
• LLM
• Python

• Strong commercial Python engineering experience.
• Significant experience building and deploying AI/ML applications in production.
• Experience designing the architecture of complex AI systems.
• Hands-on experience with NLP, LLMs and modern AI technologies.
• Strong understanding of data engineering and cloud infrastructure.
• Experience building reliable, scalable applications with demanding performance requirements.
• Ability to explain technical decisions and assess different architectural approaches.
• Confidence taking ownership of projects and guiding other engineers technically.
• Experience with knowledge graphs, ontologies, recommendation systems, human-in-the-loop learning or LLM fine-tuning is particularly interesting.
• Demonstrated ability to take ownership of technically complex systems and deliver them into production; an Architect or Technical Lead title is not required.

We are working with a growing SaaS business developing intelligent document-processing technology for the legal sector. The company has an established product and is investing in a new AI layer to transform how users analyse documents, automate workflows and make complex decisions. This role offers technical ownership of AI functionality within the existing platform, close collaboration with our technically hands-on CTO, and influence over architecture and implementation. You will help build AI systems designed to provide accurate, reliable recommendations using complex data, with a focus on production readiness and ongoing improvement. The growing engineering team has ambitious plans for its AI capabilities. The role is fully remote within the UK, with a salary of up to £100,000 depending on experience, an annual performance-related bonus of up to 10%, 25 days of annual leave plus UK public holidays, Bupa medical and dental cover, a pension with a 3% employer contribution and 5%