About this role

Amazon is hiring a mid-level Applied Scientist in the machine learning function based in London, United Kingdom. The posting calls out experience with Java, C#, LLMs, Deep Learning.

Role: Applied Scientist
Function: machine learning
Level: mid
Track: Individual contributor
Employment: Full-time
Location: London, United Kingdom
Department: Project/Program/Product Management--Technical
Posted: Jul 1, 2026

AI Summary

Applied Scientist developing AI solutions for Amazon's seller base and internal consultants. Drives machine learning innovations from research to production using LLMs, optimization, and causal inference. Requires expertise in deep learning, ML architectures, and end-to-end deployment with measurable business impact.

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Job description

from Amazon careers

Amazon Strategic Account Services (SAS) Tech Organization is looking for an Applied Scientist Applied Scientist who can autonomously drive scientific innovations from research to production, developing sophisticated AI solutions that serve both Amazon's global seller base and internal Marketplace Consultants. Working in a highly collaborative environment, you'll leverage expertise in machine learning, operations research, and statistics to translate theoretical advances in LLMs, probabilistic modeling, and optimization into practical applications. The role demands strong capabilities in prototyping and iterative improvement, bridging cutting models with real-world applications while maintaining scientific rigor and measurable business impact.

Key job responsibilities
- Lead the development of sophisticated AI solutions leveraging deep learning, LLMs, and advanced machine learning techniques to transform both seller operations and internal consultancy capabilities at scale
- Define and drive long-term scientific vision for the organization, translating complex business challenges into innovative technical solutions that advance the state-of-the-art in applied machine learning
- Design and implement advanced ML architectures combining multiple learning paradigms - from reinforcement learning and causal inference to predictive modeling - to tackle critical marketplace challenges
- Architect next-generation recommendation and optimization systems that handle complex multi-dimensional constraints while maintaining robustness and interpretability at scale
- Drive end-to-end development of AI applications from research through production, collaborating with engineering teams to ensure successful deployment and conducting rigorous A/B experiments to validate impact
- Pioneer novel applications of foundation models and generative AI, developing sophisticated evaluation frameworks while maintaining Amazon's high standards for accuracy and reliability
- Lead technical discussions across organizational boundaries, effectively communicating complex scientific concepts to diverse stakeholders while staying at the forefront of ML/AI research advancements

About the team
What is Amazon Strategic Account Services (SAS)?
The SAS team aims to accelerate the full potential of our Sellers, helping them to navigate the increasing complexity of the e-commerce space. Our team provides in-depth strategic consultancy using a data-driven, collaborative, and a Customer-focused approach to achieve commercial goals of Amazon Sellers.

Basic Qualifications

- PhD, or a Master's degree and experience in building models for business application
- Experience programming with at least one modern language such as Java, C++, or C# including object-oriented design
- Experience in any of the following areas: algorithms and data structures, parsing, numerical optimization, data mining, parallel and distributed computing, high-performance computing

Preferred Qualifications

- Track record of investigating, designing, and delivering innovative ML solutions that drive significant business impact

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