Data Scientist Ii, Alexa for Shopping Science UK

Amazon Amazon · Big Tech · London, United Kingdom · Data Science

Data Scientist II role focused on building and optimizing AI-driven conversational shopping experiences for Alexa. The role involves developing multimodal systems using NLP, ML, and LLMs, with a focus on agentic capabilities, information retrieval, recommender systems, and knowledge graphs. Responsibilities include data analysis, modeling, experimentation, A/B testing, metric development, and collaboration with scientists and engineers to launch features and systems. The role also touches on inference and serving infrastructure.

What you'd actually do

  1. Perform hands-on analysis and modeling of enormous multimodal datasets to develop insights into how to best help customers throughout their shopping journeys.
  2. Use statistical methods, machine learning, and data mining techniques to create scalable solutions for measuring and optimizing shopping assistant systems based on a rich set of structured and unstructured contextual signals.
  3. Design and analyze A/B tests and experiments to evaluate new features and model improvements, ensuring statistical rigor and actionable insights.
  4. Develop metrics, dashboards, and reporting frameworks to monitor system performance, customer engagement, and business impact.
  5. Build predictive models and conduct deep-dive analyses to identify opportunities for improving customer experience, conversion, and satisfaction.

Skills

Required

  • Master's degree or above in Math, Statistics, Computer Science, or related science field
  • Experience in a ML or data scientist role with a large technology company
  • Experience with machine learning/statistical modeling data analysis tools and techniques, and parameters that affect their performance
  • Experience with data scripting languages (e.g. SQL, Python, R etc.) or statistical/mathematical software (e.g. R, SAS, or Matlab)
  • Experience effectively communicating complex concepts through written and verbal communication

Nice to have

  • Experience in defining and creating benchmarks for assessing GenAI model performance
  • Experience with AWS services including S3, Redshift, Sagemaker, EMR, Kinesis, Lambda, and EC2
  • Experience working on multi-team, cross-disciplinary projects

What the JD emphasized

  • multimodal
  • conversational shopping
  • agentic
  • large language models
  • information retrieval
  • recommender systems
  • knowledge graphs

Other signals

  • developing conversation-based, multimodal shopping experiences
  • utilizing data analysis, statistical modeling, machine learning (ML) technologies, and experimentation
  • measuring and improving multimodal conversational systems, in particular those based on large language models, information retrieval, recommender systems and knowledge graphs
  • handle Amazon-scale use cases with significant impact on our customers' experiences
  • collaborate with scientists, engineers, and product partners
  • designing experiments, analyzing results, and launching new features, products and systems
  • making it agentic, enabling customers to set price alerts or empower AfS to act on their behalf and automatically purchase products when the price is right
  • understanding multimodal user queries and generating answers that combine text, image, audio and video
  • utilize and advance state-of-art techniques in the fields of Natural Language Processing, gen AI, Information Retrieval, Machine/Deep Learning, and Data Mining