Applied Scientist

Amazon Inc.; Bengaluru; On-site; INR 3,500,000 - 7,000,000; Full time

Job summary

Amazon Kindle Direct Publishing (KDP) in Bengaluru is hiring scientists to build the multi-agent system behind the author support assistant, enabling orchestration across specialized agents and tools. You will design multimodal models for book attributes, powering similar-book search, catalog quality, and recommendations.

You will post-train and deploy models with superior accuracy and speed, collaborating with global teams and running rigorous experiments.

Qualifications

• PhD or Master in CS/CE/ML required or equivalent.
• 3+ years of building ML models for business applications.
• Experience programming in Java, C++, Python or related language.

Responsibilities

• Build the multi-agent system behind KDP's author support assistant and orchestrate across agents and tools.
• Develop multimodal models of book attributes for similar-book search, catalog quality, and recommendations.
• Post-train open models and deploy them where they beat generic models on accuracy, cost, or speed.
• Collaborate with US scientists and engineering partners, run offline/online experiments, and present clear readouts.

Skills

PhD / Master in CS/CE/ML

3+ years ML model building

Java

C++

Python

Education

PhD or Master in CS/CE/ML

Tools

Java

C++

Python

SQL

Job description

Description

Help millions of authors around the world get their books published, discovered, and supported. As one of the first scientists on our new team in Bengaluru, you'll help turn ideas into models authors rely on every day, building agentic solutions with large language models (LLMs), multimodal models, and fine-tuning.

Key job responsibilities

• Build the multi-agent system behind KDP's author support assistant: orchestration across specialized agents and tools, personalization, and the evaluation that drives its continuous improvement.
• Build multimodal models of book attributes, and use them for similar-book search across languages, catalog quality, and category and keyword recommendations.
• Post-train open models on KDP expertise (for example with supervised fine-tuning and reinforcement learning), and deploy them where they beat general-purpose models on accuracy, cost, or speed.
• Work closely with our scientists in the US and with engineering partners to take your work to production, design rigorous offline and online experiments, and write clear readouts with recommendations.

About The Team

Kindle Direct Publishing (KDP) lets anyone publish a book. We are the science organization for Amazon's Books business, now building our science teams in Bengaluru. Our team works in three connected areas: a support assistant that answers authors' questions from their own account data, in every language KDP supports; multimodal models that use book attributes to keep the catalog trustworthy and help authors reach the right readers; and fine-tuned models that power the assistant and catalog models with KDP expertise. We serve authors, from first-time writers to full-time publishers. You will work closely with engineering, product, and policy partners. We value safety before speed and shared foundations over one-off fixes. Scientists here get dedicated time for innovation, which can lead to patents and conference papers.

Basic Qualifications

• PhD, or a Master's degree and experience in CS, CE, ML or related field
• 3+ years of building machine learning models for business application experience
• Experience programming in Java, C++, Python or related language

Preferred Qualifications

• Experience building LLM-based agents or multimodal generative AI workflows, including tool use, retrieval-augmented generation, or evaluation
• Experience fine-tuning or post-training models, including with reinforcement learning
• Experience with large-scale retrieval, embeddings, or ranking, including text and image embeddings
• Experience with multilingual natural language processing or computer vision
• Experience with SQL and large-scale data processing
• Experience in patents or publications at top-tier peer-reviewed conferences or journals
• Demonstrated experience leveraging generative AI tools to enhance workflow efficiency and productivity, with the ability to craft effective prompts and critically evaluate AI-generated outputs in a professional setting

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.

Company - ADCI - Karnataka

Job ID: A10593286