Harnham
CRO/Optimization Engineer (AI-focused)
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CRO / AI Experimentation Engineer Contract
6-month minimum contract, Outside IR35, £350-450 Day Rate, August Start Date, London.
This is an opportunity to shape how AI-powered products are measured, tested and optimised in a live commercial environment. You will take ownership of experimentation delivery across AI-native customer experiences, ensuring every product change is assessed against meaningful business outcomes such as conversion, containment and customer satisfaction.
The Company
They are a data and technology-led organisation delivering AI-powered digital products alongside an established web estate. Their teams are investing heavily in conversational AI, recommendation engines and LLM-driven customer experiences. As they expand their experimentation capability, they are looking for a hands-on specialist who can bridge traditional optimisation practices with AI-native product development.
The Role and Deliverables
- Build, instrument and deliver experiments across live digital and AI-powered products
- Extend and manage feature flagging capabilities across the product estate using LaunchDarkly or a comparable platform
- Configure, validate and troubleshoot experiment tracking, analytics instrumentation and event collection
- Define and review event schemas, data layer specifications and tracking requirements, including experiment exposure and AI-related metadata
- Work closely with analytics and senior stakeholders to evaluate the commercial impact of product and AI changes
- Support experimentation across conversational agents, AI advisors and LLM-powered decisioning experiences
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Your Skills & Experience
- Strong hands-on experience delivering experiments in production environments, including implementation, debugging and live releases
- Practical experience with LaunchDarkly or a comparable feature flag management platform
- Working knowledge of experimentation platforms such as Adobe Target, Optimizely, or similar tools
- Experience working with AI or LLM-powered products, conversational interfaces or intelligent customer journeys
- Strong understanding of analytics implementation, event tracking, data layers and experimentation measurement
- Ability to operate independently in a remote, cross-functional environment
- Exposure to Microsoft Azure, Azure AI services, prompt engineering, API integrations or agent orchestration is beneficial
- Familiarity with AI architectures such as RAG, tool usage or multi-agent workflows is advantageous
- Experience within telecoms, e-commerce or subscription-based digital products is a plus
- A commercially focused mindset, with the ability to assess success through customer and business outcomes rather than technical delivery alone
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How to Apply
If you have a track record of delivering experimentation programmes and optimising AI-powered customer experiences in production environments, please apply with your latest CV.
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