Applied Scientist, Amazon

• Successful candidates will have strong technical ability, a focus on customers by applying a customer-first approach, and excellent teamwork and communication skills
• Research, design, and implement recommendation systems that personalise across different customer experience touch points
• Collaborate with engineers to deploy and integrate successful model experiment results into large-scale, complex Amazon production systems with low latency
• Provide machine learning thought leadership to both technical and business leaders, with the ability to think strategically about business, product, and technical challenges
• Be a subject matter expert in reinforcement learning approaches for the team and actively contribute to the science roadmap
• Define the science roadmap and research agenda that aligns with the organisation's priorities and production constraints
• Work with technical product managers to work backwards from what's important to customers and deliver machine-backed solutions
• Report and share results with the team and wider scientific community by authoring documents that are both statistically rigorous and compellingly relevant, exemplifying good scientific practice in a business environment
• Experience in patents or publications at top-tier peer-reviewed conferences or journals
• Experience programming in Java, C++, Python or related language
• Experience in any of the following areas: algorithms and data structures, parsing, numerical optimization, data mining, parallel and distributed computing, high-performance computing
• Experience in building machine learning models for business application

Desirable

• Prime Video Commerce's mission is to present the right offer to the right customer at the right time — across subscriptions, channels, and transactional video in every market and on every device
• Our
• Science team replaces static business rules with ML-driven decisions that personalise the entire commerce journey, from discovery through to checkout and beyond
• We operate at scale across hundreds of millions of customers, and we are now expanding into new frontiers — combining the latest advances in agentic and generative AI, behavioural simulation, and causal inference to understand the impact of our decisions before they
• Reach customers
• We are looking for an Applied Scientist to join the Prime Video Commerce Insights team who will work on the latest research and machine learning to build scalable personalisation solutions
• You will develop and deploy customer-facing models, understand customer behaviour at scale, and explore emerging techniques that help us make better decisions faster
• This is a hands-on role working with a high performing and high visibility multidisciplinary group of engineers and scientists in the London office, focused on improving the customer experience for Prime Video and the wider Amazon organization
• You will contribute to the design of machine learning models that scale to large quantities of data and serve low-latency recommendations to all customers worldwide
• You will embody scientific rigor in designing and executing experiments to demonstrate the technical efficacy and business value of your methods
• You will work alongside a science and engineering team that embodies the customer obsession principle by developing recommendation and decision systems that raise the profile of Prime Video Commerce as a global leader in machine learning and personalisation
• The position offers exceptional opportunities for every candidate to grow their technical and non-technical skills
• A day in the life:
• You will be both a research leader and a hands-on innovator within the Commerce Insights organisation
• You'll collaborate with talented engineers and senior leaders to solve problems that are uniquely challenging at Amazon's scale: personalising commerce decisions across multiple business lines balancing competing objectives across offerings, and positively impacting hundreds of millions of customers worldwide
• The problems here are technically deep — combining large-scale ML, causal reasoning, and behavioural modelling in a domain where every decision carries real revenue and customer experience consequences
• Your research will ship to production and move metrics that matter
• About the team:
• You will join a team of great team of engineers and applied scientists with a proven track record of solving highly complex, ambiguous problems — work that has produced patents and publications at top-tier conferences
• The team has direct visibility to senior Prime Video leadership, and collaborates broadly across Commerce, Content, and Platform teams to shape how customers discover, subscribe to, and engage with video content
• This is a team that operates at the intersection of rigorous research and real-world impact, where your ideas move from whiteboard to production for hundreds of millions of customers