Software Development Engineer, Amazon Search Navigation AI

The Amazon Search Navigation AI team helps customers go from a broad search intent to the few products that fit their needs so they can make a confident purchase decision. We generate highly relevant context-aware and personalized search refinements. We also decide the order they appear in across Amazons Search Navigation experiences guiding customers to the most relevant results. The team owns Search Navigations P0 metrics and defect guardrails which keep performance and reliability high for hundreds of millions of customers.


We are reinventing search refinement with generative AI. Our recently launched Smart Refinement experience uses large language models (LLMs) served online to turn product specifications into natural-language suggestions that match how customers think such as for colder weather or lightweight for travel. Each suggestion is personalized to the customers context. Next we are building multi-turn conversational refinement where each interaction builds on the last and helps customers narrow their intent in fewer steps.

We build and run the engineering systems behind this work including the Navigation Experience Service (NES). NES connects to Amazons core search systems serves more than 3 billion queries worldwide every day and runs real-time LLM inference at global scale under strict latency and cost limits. Our platform supports launches of new navigation content and UIs and it makes fast offline and online experimentation possible.

We are looking for a Software Development Engineer who is a pragmatic problem solver comfortable with ambiguity and curious about applied science. You will build and improve the Search Navigation platform including the systems that serve LLMs in real time and work closely with Applied Scientists to take new models from research into production.

Key job responsibilities
1. Design build and operate large-scale distributed low-latency services that power Amazon Search Navigation experiences worldwide
2. Build and optimize online LLM serving for Smart Refinement and multi-turn conversational refinement with a focus on latency reliability and cost
3. Work with Applied Scientists Product Managers and Program Managers to define requirements and integrate models into production systems
4. Build scalable data pipelines that process large volumes of search and behavioral data for feature generation model training and evaluation
5. Design run and analyze online A/B experiments to measure the impact of new models and features
6. Contribute to operational excellence for critical services including monitoring on-call and P0 metrics and defect guardrails
7. Write high-quality well-tested code and take part in design and code reviews

- 3 years of non-internship professional software development experience
- 3 years of non-internship design or architecture (design patterns reliability and scaling) of new and existing systems experience
- 3 years of software development engineer or related occupational experience
- 3 years of designing and developing large-scale multi-tiered multi-threaded embedded or distributed software applications tools systems and services using: C# C Java or Perl experience
- 3 years of Object Oriented Design experience
- Experience programming with at least one software programming language

- Bachelors degree in computer science or equivalent
- Experience in developing and deploying LLMs in production on GPUs Neuron TPU or other AI acceleration hardware
- Experience in machine learning data mining information retrieval statistics or natural language processing
- Experience with Machine Learning and Large Language Model fundamentals including architecture training/inference lifecycles and optimization of model execution

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

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 WA Seattle - 143700.00 - 194400.00 USD annually