Jobs
My ads
My job alerts
Sign in
Find a job Career Tips Companies
Find

Sr. applied scientist

London
Amazon
Scientist
Posted: 11 October
Offer description

Overview

We are looking for a passionate Applied Scientist to help pioneer the next generation of agentic AI applications for Amazon advertisers. In this role, you will design agentic architectures, develop tools and datasets, and contribute to building systems that can reason, plan, and act autonomously across complex advertiser workflows. You will work at the forefront of applied AI, developing methods for fine-tuning, reinforcement learning, and preference optimization, while helping create evaluation frameworks that ensure safety, reliability, and trust at scale. You will work backwards from the needs of advertisers—delivering customer-facing products that directly help them create, optimize, and grow their campaigns. Beyond building models, you will advance the agent ecosystem by experimenting with and applying core primitives such as tool orchestration, multi-step reasoning, and adaptive preference-driven behavior. This role requires working independently on ambiguous technical problems, collaborating closely with scientists, engineers, and product managers to bring innovative solutions into production.


Key responsibilities

* Lead business, science and engineering strategy and roadmap for Sponsored Products Agentic Advertiser Guidance.
* Design and build agents to guide advertisers in conversational and non-conversational experiences.
* Design and implement advanced model and agent optimization techniques, including supervised fine-tuning, instruction tuning and preference optimization (e.g., DPO/IPO).
* Curate datasets and tools for MCP.
* Build evaluation pipelines for agent workflows, including automated benchmarks, multi-step reasoning tests, and safety guardrails.
* Develop agentic architectures (e.g., CoT, ToT, ReAct) that integrate planning, tool use, and long-horizon reasoning.
* Prototype and iterate on multi-agent orchestration frameworks and workflows.
* Collaborate with peers across engineering and product to bring scientific innovations into production.
* Stay current with the latest research in LLMs, RL, and agent-based AI, and translate findings into practical applications.


About the team

The Sponsored Products and Brands team at Amazon Ads is re-imagining the advertising landscape through the latest generative AI technologies, revolutionizing how millions of customers discover products and engage with brands across Amazon.com and beyond. We are at the forefront of re-inventing advertising experiences, bridging human creativity with artificial intelligence to transform every aspect of the advertising lifecycle from ad creation and optimization to performance analysis and customer insights.

We are a passionate group of innovators dedicated to developing responsible and intelligent AI technologies that balance the needs of advertisers, enhance the shopping experience, and strengthen the marketplace. If you’re energized by solving complex challenges and pushing the boundaries of what’s possible with AI, join us in shaping the future of advertising.

The Advertiser Guidance team within Sponsored Products and Brands is focused on guiding and supporting 1.6MM advertisers to meet their advertising needs of creating and managing ad campaigns. At this scale, the complexity of diverse advertiser goals, campaign types, and market dynamics creates both a massive technical challenge and a transformative opportunity: even small improvements in guidance systems can have outsized impact on advertiser success and Amazon’s retail ecosystem.

Our vision is to build a highly personalized, context-aware agentic advertiser guidance system that leverages LLMs together with tools such as auction simulations, ML models, and optimization algorithms. This agentic framework will operate across both chat and non-chat experiences in the ad console, scaling to natural language queries as well as proactively delivering guidance based on deep understanding of the advertiser. To execute this vision, we collaborate closely with stakeholders across Ad Console, Sales, and Marketing to identify opportunities—from high-level product guidance down to granular keyword recommendations—and deliver them through a tailored, personalized experience. Our work is grounded in state-of-the-art agent architectures, tool integration, reasoning frameworks, and model customization approaches (including tuning, MCP, and preference optimization), ensuring our systems are both scalable and adaptive.


Basic Qualifications

* PhD, or Master’s degree and 6+ years of applied research experience
* 3+ years of building machine learning models for business application experience
* Experience programming in Java, C++, Python or related language
* Experience with neural deep learning methods and machine learning


Preferred Qualifications

* Experience with modeling tools such as R, scikit-learn, Spark MLLib, MxNet, TensorFlow, NumPy, SciPy, etc.
* Experience with large-scale distributed systems such as Hadoop, Spark, etc.

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

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.

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

#J-18808-Ljbffr

Apply
Create E-mail Alert
Job alert activated
Saved
Save
Similar job
Senior scientist
London
Nanomox Ltd
Scientist
Similar job
Protection scientist engineer, intelligence and investigations
London
OpenAI
Scientist
Similar job
Pharmacovigilance scientist manager
London
Amgen, Inc.
Scientist
See more jobs
Similar jobs
Amazon recruitment
Amazon jobs in London
Science jobs in London
jobs London
jobs Greater London
jobs England
Home > Jobs > Science jobs > Scientist jobs > Scientist jobs in London > Sr. Applied Scientist

About Jobijoba

  • Career Advice
  • Company Reviews

Search for jobs

  • Jobs by Job Title
  • Jobs by Industry
  • Jobs by Company
  • Jobs by Location
  • Jobs by Keywords

Contact / Partnership

  • Contact
  • Publish your job offers on Jobijoba

Legal notice - Terms of Service - Privacy Policy - Manage my cookies - Accessibility: Not compliant

© 2025 Jobijoba - All Rights Reserved

Apply
Create E-mail Alert
Job alert activated
Saved
Save