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Applied Scientist II, Partner Science

Amazon.com Services LLC, Seattle, Washington +1

Posted pay

$143K–$223K

a year

Location: Seattle, Washington +1
Work type: Not given
Level: Not given
Skills in the job text: A/B testing
Posted: Sep 22, 2026
Last check: 7 h ago
Job type: Research, Inference & ML systems, ML / AI engineering

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Amazon.com Services LLC

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The role

We are looking for an Applied Scientist to join our team and develop ML/AI models and causal inference studies that directly improve how advertisers find, work with, and succeed through partners. In this role, you will design, build, and productionize ML/AI and econometric solutions. You will work on ambiguous, real-world and high-impact problems where neither the problem nor the solution is well-defined, and you will be trusted to operate with growing autonomy while collaborating closely with senior and principal product managers, engineers, data engineers, BIEs, and sales/marketing stakeholders.

The team

The Partner Science team sits within the Partner Analytics organization in PartnerTech, Amazon Ads. Our mission is to drive the Advertising Partner flywheel by infusing science-based interventions at all stages of the partner journey — demand generation, partner selection, partner engagement and growth, and partner value — ultimately improving the partner-managed advertiser experience.

We are part of a broader Partner Analytics team comprising Data Engineering, Business Intelligence, and Science functions, all unified by a shared commitment to both advertiser and partner success. The Science team currently includes senior applied scientists, data scientists, supported by MLOps engineering partners who help us scale model deployment. Together, we own 10+ production science models and studies that power Partner Network platform features, sales and marketing programs, and finance attribution and forecasting across 20+ marketplaces.

We bias for action, embrace a culture of fast iteration and reinforcement learning, celebrate both achievements and lessons learned, and invest in growing top scientist talent. If you are enthusiastic about applying ML/AL, causal inference, and LLMs to real-world advertising ecosystem problems with measurable business impact, we'd love to hear from you. Too learn more about us, see our wiki https://w.amazon.com/bin/view/AdSales/SPE/PEG/Analytics/Science/Overview

3+ years of building models for business application experience
PhD, or Master's degree and 4+ years of CS, CE, ML or related field experience
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
3+ years of hands-on predictive modeling and large data analysis experience
Experience in professional software development
Ph.D. in computer science, machine learning, engineering, or related fields, or experience in data science, machine learning or data mining
Knowledge of data engineering pipelines, cloud solutions, ETL management, databases, visualizations and analytical platforms
Experience completing complex tasks quickly with little to no guidance and react with appropriate urgency to situations that require a quick turnaround, or experience in sales/business development
• 5+ years experience building propensity models, recommendation systems, or advertiser/partner targeting models in an advertising or marketplace context
• Depth and hands on design experience on A/B test and causal and economic impact analysis. Hands-on experience with LLMs and Gen-AI applications (e.g., text summarization, retrieval-augmented generation, digital assistants)
• Experience with AWS data and ML infrastructure (e.g., SageMaker, S3, Redshift, Athena, Andes, Batch) or equivalent cloud-based ML platforms
• 3+ years experience working in advertising and retail ecosystem, and has done global level projects to understand customer behaviors
• Track record of mentoring peers or contributing to the scientific community through publications, internal conference or tech talks, or knowledge sharing

Our inclusive culture empowers Amazonians to deliver the best results for our customers. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process, including support for the interview or onboarding process, please visit https://amazon.jobs/content/en/how-we-hire/accommodations for more information. If the country/region you’re applying in isn’t listed, please contact your Recruiting Partner.

The base salary range for this position is listed below. Your Amazon package will include sign-on payments and restricted stock units (RSUs). Final compensation will be determined based on factors including experience, qualifications, and location. Amazon also offers comprehensive benefits including health insurance (medical, dental, vision, prescription, Basic Life & AD&D insurance and option for Supplemental life plans, EAP, Mental Health Support, Medical Advice Line, Flexible Spending Accounts, Adoption and Surrogacy Reimbursement coverage), 401(k) matching, paid time off, and parental leave.

Learn more about our benefits at https://amazon.jobs/en/benefits.

USA, NY, New York – 172,400.00 - 223,400.00 USD annually

USA, WA, SEATTLE – 142,800.00 - 193,200.00 USD annually

What you will do

Design, prototype, validate, and productionize ML models across science domains: Predictive/Supervised (e.g., propensity models, deep learning, reinforcement learning), Causal Measurement (A/B tests, causal inference studies), and Text Analytics/LLMs (signal extraction, model explainability, Gen-AI application).
Independently own one or more production science models end-to-end— from initial scoping and design, to final deployment and ongoing monitor and refinement. Conduct scientific literature reviews, benchmark state-of-the-art approaches, and develop novel techniques when no textbook solution exists for our partner ecosystem challenges
Design and run A/B experiments using our scalable experiment framework to validate whether science interventions and product features drive partner growth and ad spend, working with our small, skewed partner population
Perform hands-on data analysis with large-scale advertising datasets, leveraging our centralized Partner Knowledge Base with hundreds of numeric features and unstructured data and Andes data infrastructure Collaborate with the MLOps engineering team to deploy models, and with Data Engineering to create curated datasets that power science and analytics efforts
Translate model outputs into business impact for cross-functional stakeholders (Different Sales and Marketing teams, Finance, Partner Product teams), simplify and provide business friendly communication to drive effective debates and trade-off discussion, and lead to alignment and decision.
Contribute to model quality monitoring, data quality frameworks, and operational excellence — including defining evaluation thresholds and data quality checks at each pipeline stage
Mentor teammates and contribute to a culture of intellectual integrity, continuous learning, and knowledge sharing

About Amazon.com Services LLC

Amazon Ads is building a >$100BN business, and our 3000+ advertising partners — agencies and tech providers — are strategic growth engines for that ambition. The Partner Science team drives the Advertising Partner flywheel by infusing science-based interventions at every stage of the partner journey: demand generation, partner selection, partner engagement and growth, and partner value, and partner experience measurement.

Legal notes

Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or other legally protected status.

Read the job posting on the Amazon.com Services LLC site

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Source: amazon.jobs. We last checked this job 7 h ago. We first saw it 6 days ago. A job on a job board does not always mean that the team interviews people now.

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Compared with similar jobs

This base pay is below the median for AI research jobs in New York with no level in the job title.

Median: $221K a year
Other jobs in the group: 230

We compare the middle of each posted range. This is base pay as posted. The group does not include this job.