Senior Applied Scientist, Amazon AWS Agentic AI, AWS AI Fundamental Research

Amazons is looking for a passionate, talented, and inventive Applied Scientist with a strong machine learning background to help build industry‑leading technology in generative AI and foundational models.

The Senior Applied Scientist will lead the design and development of agentic evaluation frameworks and evaluation/critic model training that assess the quality and effectiveness of AI agents y will define evaluation methodologies, create benchmarks, and build evaluation models and automated systems that measure agent performance across critical dimensions. The scientist will stay at the forefront of the rapidly evolving field by studying and adopting state‑of‑the‑art methods, conducting original research to advance the science of agent and evaluation.

They will own the end‑to‑end lifecycle from research and data curation through model training to production deployment, working closely with engineering to deliver evaluation capabilities as managed AWS services. They will collaborate with cross‑functional stakeholders to translate science insights into actionable improvements, mentor junior scientists, and contribute to the broader research community.

• 3+ years of building machine learning models for business application experience
• PhD, or Master’s degree and 6+ years of applied research experience
• Experience programming in Java, C++, Python or a related language
• Experience with neural deep learning methods and machine learning

• Experience with modeling tools such as R, scikit‑learn, Spark MLLib, MxNet, Tensorflow, numpy, scipy etc.
• Experience with large‑scale distributed systems such as Hadoop, Spark etc.

Amazon also offers comprehensive benefits including health insurance (medical, dental, vision, prescription, Basic Life & AD&D insurance and optional Supplemental life plans, EAP, Mental Health Support, Medical Advice Line, Flexible Spending Accounts, Adoption and Surrogacy Reimbursement coverage), 401(k) matching, paid time off, and parental leave. Learn more about our benefits at (Use the "Apply for this Job" box below)..

USA, CA, Santa Clara -  -  USD annually

Amazons is an equal opportunity employer and does not discriminate on the basis of protected veteran status, disability, or other legally protected status.

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  for more information.