Software Dev Engineer II, Stores Foundational AI SFAI

Join us in building the systems that enable Amazons AI to learn from real-world customer behavior and continuously improve at massive scale.

As a Software Development Engineer II you will solve challenging data and distributed-systems problems at the center of Amazons next-generation shopping AI. You will build scalable data platforms and intelligence capabilities that transform billions of customer interactions into high-quality training data learning signals and insights that directly improve large language models agentic systems and customer experiences.

You will own important components spanning data ingestion behavioral analysis dataset generation and experimentation and evaluation for large language models and AI agents. Working closely with applied scientists and experienced engineers you will turn complex research and product needs into reliable production systems and help pioneer automated agent-driven workflows for continuous model improvement.

Key job responsibilities
1 Design build and operate scalable systems that transform real customer interactions into high-quality datasets behavioral signals and actionable insights for model training post-training and evaluation.

2 Develop data intelligence capabilities to analyze customer behavior identify meaningful patterns and model quality gaps and discover signals that improve large language models and agentic systems.

3 Build reliable pipelines and self-service tools for data ingestion filtering sampling aggregation dataset generation quality validation and exploratory analysis.

4 Partner with applied scientists to define metrics analyze experiments evaluate training data effectiveness and translate findings into improved data recipes and learning signals.

5 Develop automated and agent-driven workflows for data curation anomaly detection experimentation evaluation and continuous model improvement while maintaining high standards for privacy security scalability and operational excellence.

- 3 years of non-internship professional software development experience
- 2 years of non-internship design or architecture (design patterns reliability and scaling) of new and existing systems experience
- Experience programming with at least one software programming language
- Knowledge of Machine Learning and LLM fundamentals including transformer architecture training/inference lifecycles and optimization techniques

- Knowledge of ML frameworks including JAX PyTorch vLLM SGLang Dynamo TorchXLA and TensorRT
- Knowledge of system performance memory management and parallel computing principles
- Experience with CUDA/C/Kernel development

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

Los Angeles County applicants: Job duties for this position include: work safely and cooperatively with other employees supervisors and staff; adhere to standards of excellence despite stressful conditions; communicate effectively and respectfully with employees supervisors and staff to ensure exceptional customer service; and follow all federal state and local laws and Company policies. Criminal history may have a direct adverse and negative relationship with some of the material job duties of this position. These include the duties and responsibilities listed above as well as the abilities to adhere to company policies exercise sound judgment effectively manage stress and work safely and respectfully with others exhibit trustworthiness and professionalism and safeguard business operations and the Companys reputation. Pursuant to the Los Angeles County Fair Chance Ordinance we will consider for employment qualified applicants with arrest and conviction records.

Our inclusive culture empowers Amazonians to deliver the best results for our customers. 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. If the country/region youre applying in isnt listed please contact your Recruiting Partner.

The base salary range for this position is listed below. Your Amazon package will include sign-on payments and restricted stock units (RSUs). Final compensation will be determined based on factors including experience qualifications and location. Amazon also offers comprehensive benefits including health insurance (medical dental vision prescription Basic Life & AD&D insurance and option for 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 CA Palo Alto - 165200.00 - 223600.00 USD annually
USA WA Seattle - 143700.00 - 194400.00 USD annually