Alexa International is looking for a passionate, talented, and inventive Applied Scientist to help build industry-leading technology with Large Language Models (LLMs) and multimodal systems, requiring strong deep learning and generative models knowledge. You will contribute to developing novel solutions and deliver high-quality results that impact Alexa's international products and services.

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.

Fine-tune/post-train LLMs using techniques like SFT, DPO, RLHF, and RLAIF.

Set up experimentation frameworks for agile model analysis and A/B testing.

Collaborate with partner teams on LLM evaluation frameworks and post-training methodologies.

Contribute to end-to-end delivery of solutions from research to production, including reusable science components.

Communicate solutions clearly to partners and stakeholders.

Contribute to the scientific community through publications and community engagement.