Senior Data Scientist

Role Overview

Join our established team as a Senior Data Scientist to contribute to new and existing features of our multi-agent conversational sales product, focusing on agentic and LLM-driven systems.

What You Will Do

Design, build, and ship LLM and agent-based systems, train and fine-tune models, define success metrics, and keep systems dependable.

Why It Might Be a Fit

You’ll work with a multi-skilled team, enjoy tackling hard problems, and keep learning in a fast-moving field. Practical and collaborative, you’ll explain technical ideas clearly and work independently.

Requirements

• Extensive experience in data science and ML, including hands-on delivery of LLM-powered and agentic systems running in production at scale
• Works AI-natively day to day, using AI tools and agents as a core part of how they build, test, and ship
• Strong Python, plus PyTorch, scikit-learn or similar frameworks
• Hands-on LLM work: prompting, fine-tuning, grounding, and guardrails
• Agentic systems at scale, including orchestration (LangChain/LangGraph), tracing and evals (Langfuse), memory design, and latency and cost trade-offs
• Embeddings, vector search, and hybrid search
• Solid grounding in statistics and ML theory across supervised and unsupervised learning, NLP (entities, intent), recommendation, prediction, and uplift modelling
• Full model lifecycle and MLOps: containerisation (Docker/ECR) and deployment on AWS
• Working with large text datasets and data pipelines

Benefits

• Medicash healthcare scheme (reclaim costs for dental, physiotherapy, osteopathy, and optical care)
• Private Medical Insurance via AXA (after 1 year service)
• Life Insurance scheme
• 25 days holiday + bank holidays + your birthday off (rising to 28 after 3 consecutive years with the business & 30 after 5 years)
• Employee Assistance Programme (confidential counselling)
• Gogeta nursery salary sacrifice scheme (save up to 40% per year)
• Enhanced parental leave and pay including 26 weeks’ full maternity pay and 8 weeks’ paternity leave

Tagged as: Python