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Senior data scientist

London
Permanent
Harnham Search & Selection
Data scientist
Posted: 6 January
Offer description

Senior Data & AI Scientist | Up to £80,000 + 10% Bonus | Hybrid (London 3 days)

Are you passionate about shaping the next generation of AI-powered products?

Join a dynamic, fast-moving business that's embedding AI into everything from customer interactions to internal tools.

We're looking for an experienced Data & AI Scientist to help drive innovation across cutting-edge AI initiatives — from chatbots and voice assistants to advanced retrieval-augmented generation (RAG) systems and agentic workflows.

The Role

You'll work closely with the AI Engineering and Data Science teams to:

* Develop and prototype AI-driven solutions across customer-facing and internal applications.
* Build and optimise LLM-based assistants, RAG pipelines, and agentic AI workflows.
* Collaborate on the architecture and deployment of scalable AI solutions (with support from engineering).
* Partner with stakeholders to translate business needs into practical, intelligent systems.
* Mentor junior team members and contribute to the evolution of our AI tooling stack.

This role is ideal for a hands-on AI practitioner who enjoys experimentation, collaboration, and delivering real-world value.

What You'll Bring

* 3+ years experience in a commercially driven customer environment
* Strong Python skills and solid grounding in AI/ML fundamentals.
* Experience with some of Databricks, LangChain, vector databases, or LLM orchestration tools.
* Experience in RAG pipelines, transformers, and modern AI architectures.
* Understanding of deployment or MLOps best practices (Azure experience a plus).
* Recent, hands-on experience with applied LLM projects.
* Strong communication and stakeholder engagement skills.

A Master's degree in Computer Science, ML, or AI is preferred but not required.

The Opportunity

* Be part of an ambitious AI journey - already 70% built, with big plans for the next 5 years.
* Contribute to short-term LLM "quick wins" and longer-term agentic AI development.
* Work in a collaborative, supportive environment with senior data leaders.
* Help shape how AI transforms both customer experience and business efficiency.

Package & Details

* Salary: Up to £80,000 + 10% Bonus + 5% Matched Pension
* Hybrid working: 3 days per week in London office (Tues/Weds fixed)
* No visa sponsorship available

Apply below!

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