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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Data Scientist - **Company:** Just Eat Takeaway.com - **Location:** London, UK (Remote available) - **Contract:** Permanent contract - **Skills:** A/B Testing, Artificial Intelligence, Data Analysis, Encodings, Data Warehousing, Python (Programming Language), Standard Sql, Software Deployment, SQL Databases, Large Language Models, Prompt Engineering, Machine Learning Operations, Data Pipelines - **Published:** September 3, 2026 - **Apply:** https://uk.indeed.com/viewjob?jk=a267401f4a0f32aa ## About the Role * Proven track record delivering end-to-end ML solutions from problem framing through data exploration to production deployment and experiment measurement, demonstrating your commitment to achieving goals. * Hands-on expertise in search, retrieval and recommendation techniques including embedding-based approaches, learning-to-rank, and vector similarity search with measurable business impact. * Practical experience applying LLMs in production environments, including prompt engineering, fine-tuning, structured output validation and assessing generative output quality. * Strong experimentation skills with ability to design and interpret A/B tests, reason about statistical significance, and understand the gap between offline and online performance. * Production-grade Python coding abilities that go beyond notebooks, writing clean, testable code suitable for engineering workflows and collaboration with technical teams. * Proficient SQL skills across complex data warehouses, including partitioning, window functions, and large-table joins, with focus on query efficiency and data quality. * Excellent problem-framing and communication skills to translate ambiguous business questions into modelling approaches and explain technical results to non-technical stakeholders based on respect and mutual support. * Self-starter attitude comfortable with autonomy and ambiguity, thriving in fast-paced environments where you can build rapidly, test rigorously and roll out successes at scale. * Strong collaboration skills to work effectively with senior data scientists, ML engineers, product partners and commercial teams across different levels and functions. * Results-driven mindset with attention to detail, able to balance speed of execution with technical rigour while making data-informed decisions that create lasting impact. Bonus skills that will help you excel: * Experience with causal inference or uplift modelling relevant to promotions and growth initiatives. * Knowledge of sequential or session-based recommendation modelling techniques. * Familiarity with real-time data pipelines and streaming infrastructure. * Experience working across multiple languages or markets in a data science context. ## Description * Lead the development and deployment of ML/AI solutions including embedding models, fine-tuned LLMs, and ranking systems that drive engagement and orders while raising the bar for technical excellence. * Apply generative AI and LLM techniques to personalisation challenges, generating customer and partner representations that improve search relevance and app experiences. * Own your results by designing, running and interpreting A/B experiments with statistical rigour, measuring real impact on business metrics and holding yourself accountable. * Collaborate with ML engineers to productionise models, implementing MLOps best practices and maintaining monitored pipelines that deliver consistent value. * Break down silos by translating complex business questions into clear modelling approaches and communicating results effectively to product and commercial stakeholders. * Be determined to take end-to-end ownership of well-scoped workstreams, independently framing problems, choosing approaches, running experiments and presenting findings. * Move fast by writing production-quality Python code and efficient SQL for data pipelines and analyses that can scale across our marketplace. * Contribute to JET's foundation model platform and personalised targeting systems, pushing boundaries to create lasting impact across millions of customer interactions. * Set clear goals by designing experiments that influence commercial decisions while ensuring statistical validity and actionable insights. * Aim higher by staying current with advances in search, retrieval, recommendations and LLM applications, bringing fresh ideas to drive the AI Growth vision forward. ## Related Videos - [How building an industry DBMS differs from building a research one](https://www.wearedevelopers.com/videos/768-how-building-an-industry-dbms-differs-from-building-a-research-one) - [A Brief History of Data Storage](https://www.wearedevelopers.com/videos/974-a-brief-history-of-data-storage) - [Bringing the power of AI to your application.](https://www.wearedevelopers.com/videos/1010-bringing-the-power-of-ai-to-your-application) - [Data Science in Retail](https://www.wearedevelopers.com/videos/586-data-science-in-retail) - [JSON and Beyond](https://www.wearedevelopers.com/videos/968-json-and-beyond) - [How We Built a Machine Learning-Based Recommendation System (And Survived to Tell the Tale)](https://www.wearedevelopers.com/videos/752-how-we-built-a-machine-learning-based-recommendation-system-and-survived-to-tell-the-tale) ## Related Articles - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk) - [Data Analyst Salary in the UK](https://www.wearedevelopers.com/magazine/278-data-analyst-salary-in-the-uk) - [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Coffee with Developers - Maria Apazoglou - Making AI understandable for all in production](https://www.wearedevelopers.com/magazine/475-coffee-with-developers-maria-apazoglou-making-ai-understandable-for-all-in-production) - [How to Become an AI Engineer](https://www.wearedevelopers.com/magazine/331-how-to-become-an-ai-engineer)