Senior Applied Scientist, Alexa Sensitive Content Intelligence (ASCI)

The Mission Build AI safety systems that protect millions of Alexa customers every day. As conversational AI evolves, youll solve challenging problems in Responsible AI by ensuring LLMs provide safe, trustworthy responses, building AI systems that understand nuanced human values across cultures, and maintaining customer trust at scale.

What Youll Build Youll pioneer breakthrough solutions in Responsible AI at Amazons scale. Imagine training models that set new safety standards, designing automated testing systems that hunt for vulnerabilities before they surface, and certifying the systems that power millions of daily conversations. Youll create intelligent evaluation systems that judge responses with human-level insight, build models that truly understand what makes interactions safe and delightful, and craft feedback mechanisms that help Alexa+ grasp the nuances of complex customer conversations. Heres where it gets even more exciting: youll build AI agents that act as your teams safety net-automatically detecting and fixing production issues in real-time, often before anyone notices there was a problem. Your innovations wont just improve Alexa+; theyll fundamentally shape how it learns, evolves, and earns customer trust. As Alexa+ continues to delight customers, your work ensures it becomes more trustworthy, safer, and deeply aligned with customer needs and expectations.

Your work directly protects customer trust at Amazons scale. Every innovation you create-from novel safety mechanisms to sophisticated evaluation techniques-shapes how millions of people interact with AI confidently. Youre not just building products; youre defining industry standards for responsible AI.

This is frontier research with immediate real-world impact. Youll tackle problems that require innovative solutions: training models that remain truthful and grounded across diverse contexts, building reward models that capture the nuanced spectrum of human values across cultures and languages, and creating automated systems that continuously discover and address potential issues before customers encounter them. Youll collaborate with world-class scientists, product managers, and engineers to transform state-of-the-art ideas into production systems serving millions.

What Were Looking For

• Deep expertise in state-of-the-art NLP and Large Language Models
• Track record of building scalable ML systems
• Passion for impactful research-where frontier science meets real-world responsibility at scale
• Excitement about solving problems that will shape the future of AI

Ready to work on AI safety challenges that define the industry? Join us.

Key Job Responsibilities This is where youll make your mark. Youll architect breakthrough Responsible AI solutions that become industry benchmarks, pioneering algorithms that eliminate false information, designing frameworks that hunt down vulnerabilities before bad actors find them, and developing models that understand human values across every culture we serve. Working with world-class engineers and scientists, youll push the boundaries of model training-transforming bold research into production systems that protect millions of customers daily while withstanding attacks and delivering exceptional experiences.

But heres what makes this role truly special: youll shape the future. Youll lead certification processes, advance optimization techniques, build evaluation systems that reason like humans, and mentor the next generation of AI safety experts. Every innovation you drive will set new standards for trustworthy AI at the worlds largest scale.

A Day in the Life As a Responsible AI Scientist, youre at the frontier of AI safety-experimenting with breakthrough techniques that push the boundaries of whats possible. You partner with engineering to transform research into production-ready solutions, tackling complex optimization challenges. You brainstorm with Product teams, translating ambitious visions into concrete objectives that drive real impact. Your expertise shapes critical deployment decisions as you review impactful work and guide go/no-go calls. You mentor the next generation of AI safety leaders, watching ideas spark and capabilities grow. This is where science meets impact-building AI thats not just intelligent, but trustworthy and aligned with human values.

About the Team Our team pioneers Responsible AI for conversational assistants. We ensure Alexa delivers safe, trustworthy experiences across all devices, modalities, and languages worldwide. We work on frontier AI safety challenges-and were looking for scientists who want to help shape the future of trustworthy AI.