Description As a Principal Software Engineer, you bring structure to ambiguous business problems and use science, logic, and practical experience to decompose them into straightforward, scalable solutions. You set the standard for scientific excellence and make decisions that affect the way we build and integrate algorithms. Your solutions are exemplary in terms of system design, clarity, efficiency, and extensibility. You tackle intrinsically hard problems; you're interested in learning; and you acquire skills and expertise as needed.Your expertise is deep and broad; you’re hands on, producing both detailed technical work and high-level architectural designs. Principal Engineers are pragmatic visionaries who can translate business needs into workable technology solutions. Their expertise is deep and broad. They are hands on, producing both detailed technical work and high-level architectural designs. Key job responsibilities - Serve as a technical lead on our most demanding, cross-functional projects. - Ensure the quality of architecture and design of systems. - Functionally decompose complex problems into simple, straight-forward solutions. - Fully and completely understand system interdependencies and limitations. - Possess expert knowledge in performance, scalability, enterprise system architecture, and engineering best practices. - Leverage knowledge of internal and industry prior art in design decisions. - Effectively research and benchmark Amazon technology against other competing systems in the industry. - Contribute intellectual property through patents. - Assist in the career development of others, actively mentoring individuals and the community on advanced technical issues and helping managers guide the career growth of their team members. - Exert technical influence over multiple teams, increasing their productivity and effectiveness by sharing your deep knowledge and experience. Basic Qualifications - Bachelor’s degree in computer science or other engineering field - 10+ years of experience - Previous experience with leading the delivery of large-scale systems focused on large language models including the data preparation, modeling, and evaluation stages including distillation, supervised fine tuning, and policy optimization - Previous experience with deep learning, transformers models, and frameworks like PyTorch or Tensor Flow Preferred Qualifications - Master’s degree or higher preferred - Previous experience mentoring and developing junior engineers 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 Company’s 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 https://amazon.jobs/content/en/how-we-hire/accommodations for more information. If the country/region you’re applying in isn’t listed, please contact your Recruiting Partner. Our compensation reflects the cost of labor across several US geographic markets. The base pay for this position ranges from $180,100/year in our lowest geographic market up to $311,200/year in our highest geographic market. Pay is based on a number of factors including market location and may vary depending on job-related knowledge, skills, and experience. Amazon is a total compensation company. Dependent on the position offered, equity, sign-on payments, and other forms of compensation may be provided as part of a total compensation package, in addition to a full range of medical, financial, and/or other benefits. For more information, please visit https://www.aboutamazon.com/workplace/employee-benefits . This position will remain posted until filled. Applicants should apply via our internal or external career site.