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Applied Scientist, Alexa International Tech
Amazon
On-siteseniorPosted June 3, 2026
About the Role
Develop and deploy novel deep learning algorithms and modeling techniques for Generative AI, LLMs, and multimodal systems, specifically focusing on speech generation for Alexa, from research to large-scale production.
Requirements
Strong deep learning background with expertise in Generative AI, LLMs, and multimodal systems, capable of developing novel algorithms for speech generation and transitioning research to production.
Full Job Description
The Alexa International Tech (AIT) team is looking for a passionate, talented, and inventive Applied Scientist with a strong deep learning background, to build industry-leading Generative Artificial Intelligence (GenAI) technology with Large Language Models (LLMs) and multimodal systems.
As part of this team, you will have the opportunity to work on Niche technology that powers Alexa for hundreds of millions of customers worldwide. You will push the boundaries of what's possible with generative AI, developing novel approaches to make Alexa sound more natural, expressive, and culturally relevant across multiple languages and locales. This is a unique opportunity to combine fundamental research with large-scale production impact, working at the intersection of speech synthesis, large language models, and multimodal AI systems.
Key job responsibilities
As an Applied Scientist in the Alexa International Tech team within Alexa AI, you will work with talented peers to develop novel algorithms and modeling techniques to advance the state of the art in multi-modal models, with a focus on speech generation. You will leverage Amazon's heterogeneous data sources and large-scale computing resources to build machine learning models that deliver natural, expressive, and culturally appropriate speech experiences across multiple languages.
You will design and conduct experiments, prototype new approaches, and iterate rapidly to validate hypotheses. You will publish your findings at top-tier conferences and contribute to Amazon's intellectual property portfolio. You will collaborate closely with engineering teams to transition research prototypes into production systems that serve customers at scale.
This role requires a pragmatic technical leader comfortable with ambiguity, capable of summarizing complex data and models through clear visual and written explanations. You will mentor junior scientists, influence technical direction, and communicate results effectively to both technical and non-technical stakeholders.
A day in the life
You will start your day reviewing experiment results and iterating on model architectures for speech generation. You will collaborate with software engineers to optimize model performance for production deployment, and partner with product managers to align research priorities with customer needs. You will participate in science reviews, paper reading groups, and brainstorming sessions with fellow scientists across the organization. Your work directly impacts how Alexa sounds and communicates with customers in international markets, making every day an opportunity to solve meaningful problems at global scale.
About the team
The Alexa International Tech team is a global team with engineering teams in all 3 regions. Our vision is to build an Alexa assistant that is culturally relevant, linguistically fluent, and locally present. Our team operates with a startup mentality within Amazon, moving fast to deliver breakthrough experiences while maintaining the highest scientific rigor.
As part of this team, you will have the opportunity to work on Niche technology that powers Alexa for hundreds of millions of customers worldwide. You will push the boundaries of what's possible with generative AI, developing novel approaches to make Alexa sound more natural, expressive, and culturally relevant across multiple languages and locales. This is a unique opportunity to combine fundamental research with large-scale production impact, working at the intersection of speech synthesis, large language models, and multimodal AI systems.
Key job responsibilities
As an Applied Scientist in the Alexa International Tech team within Alexa AI, you will work with talented peers to develop novel algorithms and modeling techniques to advance the state of the art in multi-modal models, with a focus on speech generation. You will leverage Amazon's heterogeneous data sources and large-scale computing resources to build machine learning models that deliver natural, expressive, and culturally appropriate speech experiences across multiple languages.
You will design and conduct experiments, prototype new approaches, and iterate rapidly to validate hypotheses. You will publish your findings at top-tier conferences and contribute to Amazon's intellectual property portfolio. You will collaborate closely with engineering teams to transition research prototypes into production systems that serve customers at scale.
This role requires a pragmatic technical leader comfortable with ambiguity, capable of summarizing complex data and models through clear visual and written explanations. You will mentor junior scientists, influence technical direction, and communicate results effectively to both technical and non-technical stakeholders.
A day in the life
You will start your day reviewing experiment results and iterating on model architectures for speech generation. You will collaborate with software engineers to optimize model performance for production deployment, and partner with product managers to align research priorities with customer needs. You will participate in science reviews, paper reading groups, and brainstorming sessions with fellow scientists across the organization. Your work directly impacts how Alexa sounds and communicates with customers in international markets, making every day an opportunity to solve meaningful problems at global scale.
About the team
The Alexa International Tech team is a global team with engineering teams in all 3 regions. Our vision is to build an Alexa assistant that is culturally relevant, linguistically fluent, and locally present. Our team operates with a startup mentality within Amazon, moving fast to deliver breakthrough experiences while maintaining the highest scientific rigor.