Real-Time Ad ML Scientist — Ranking, Value & Bid

Amazon Development Centre (London) Limited; Greater London; On-site; GBP 100,000 - 160,000; Full time

Job summary

Amazon Ads in London is seeking an Applied Scientist to help ensure ads shoppers see are relevant, by advancing ML models for ranking, valuation, and bidding on Amazon DSP. You will design and ship production-grade code, apply state-of-the-art techniques in ranking, deep learning, and information retrieval, and collaborate with business and science teams to balance shopper experience with advertiser value.

Role operates in a high-scale, low-latency environment with vast data and global reach

Qualifications

• PhD or a Master’s degree and experience in engineering, technology, computer science, machine learning, robotics, operations research, statistics, mathematics or equivalent quantitative field
• Experience programming in Java, C++, Python or related language
• Experience in patents or publications at top‑tier peer‑reviewed conferences or journals
• Experience in any of the following areas: algorithms and data structures, parsing, numerical optimization, data mining, parallel and distributed computing, high‑performance computing

Responsibilities

• Design and improve the models that decide how ads are ranked, valued, and priced — including how relevant an ad is to the page and the shopper.
• Apply and extend state‑of‑the‑art techniques across e.g. ranking, deep learning, and information retrieval.
• Own problems end to end: frame them, prototype, experiment, and ship them to production.
• Balance competing objectives — shopper experience, advertiser and publisher value, and Amazon's business — into models that hold up across placements and marketplaces.
• Communicate your work clearly to both business and science audiences, tailoring how you share it to each.
• Write and ship your own production code backed by strong engineering support — we're all builders here.
• Move fast with the best tools available, including modern AI coding assistants and agents.

Skills

Java

C++

Python

Algorithms

Data structures

Education

Master's or PhD in CS/Engineering/Math

Job description

Amazon Ads in London is seeking an Applied Scientist to help ensure ads shoppers see are relevant, by advancing ML models for ranking, valuation, and bidding on Amazon DSP. You will design and ship production-grade code, apply state-of-the-art techniques in ranking, deep learning, and information retrieval, and collaborate with business and science teams to balance shopper experience with advertiser value.

Role operates in a high-scale, low-latency environment with vast data and global reach