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Applied Scientist II, Alexa International Tech

Amazon· Alexa International Tech
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Bengalurufull-timePosted 1mo ago

About the role

Applied Scientist role focusing on large language models, ASR, TTS, and Speech-to-Speech for Alexa International, leveraging multimodal data and multilingual capabilities to advance international products and services.

Responsibilities

  • Analyze, understand, and model customer behavior and the customer experience based on large-scale data.
  • Build novel online & offline evaluation metrics and methodologies for multimodal personal digital assistants.
  • Drive research in ASR, TTS, and Speech-to-Speech (S2S) model training and fine-tuning
  • Advance multilingual speech recognition and synthesis using LLM-based architectures
  • Fine-tune/post-train LLMs using techniques like SFT, DPO, RLHF, and RLAIF.
  • Collaborate with partner teams on evaluation frameworks and post-training methodologies.
  • Communicate solutions clearly to partners and stakeholders.
  • Contribute to the scientific community through publications and community engagement.

Qualifications

  • 3+ years of building machine learning models for business application experience
  • PhD, or Master's degree and 4+ years of CS, CE, ML or related field experience
  • 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
  • Experience programming in Java, C++, Python or related language
  • Deep expertise in ASR/TTS architectures, end-to-end speech models, and LLM integration with speech systems

Skills

Required:Machine learning model developmentASR/TTS architecturesLLM integration with speech systems

Benefits

  • Not specified in the description
Last updated Oct 25, 2026. Interested? Apply on the company site.

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