Fulfillment by Amazon (FBA) is a service that enables third-party sellers to outsource fulfillment to Amazon, and use Amazon's world-class science and logistics infrastructure to fulfill customers world-wide with fast delivery promise. FBA team is looking for an experienced and creative Principal Research Scientist with strong modeling and analytical skills to join our cross-domain group of data scientists, applied scientists, research scientists, and economists. This is a high-impact role with opportunities to develop systems and analyze initiatives that contribute billions of dollars to the business. As a lead research scientist in the team, you will be responsible for designing and implementing cutting edge optimization models, building automated inventory and logistic management systems while collaborating with business and software teams to solve key challenges facing the worldwide FBA business. Such challenges include 1) designing inventory, inbound, capacity, revenue, and workforce management systems for new FBA business initiatives, 2) developing, improving, and maintaining optimization models to help FBA sellers grow their business, 3) ensuring worldwide Amazon customers have access to the largest selection of products through FBA sellers, as well as 4) driving out costs across end-to-end FBA supply chain. Unlike many companies who buy existing off-the-shelf planning systems, we are responsible for studying, designing, and building systems to suit Amazon's particular needs. Our team members have an opportunity to be on the forefront of supply chain thought leadership by working on some of the most difficult problems in the industry with some of the best product managers, research scientists, statisticians, economists and software developers in the business.The successful candidate will have a strong quantitative background and can thrive in an environment that leverages operations research, statistics, machine learning, econometrics, and data analytics. Solid research experience in Operations Research, or a related field, such as statistics or machine learning, is required. We are seeking someone who can thrive in a fast-paced, high-energy and fun work environment where the team delivers value incrementally and frequently. We value highly technical people who know their subject matter deeply and are willing to learn new areas. We look for individuals who know how to deliver results and show a desire to develop themselves, their colleagues, and their careers.A day in the lifeIn this role, you will be a technical leader in Operations Research with significant scope, impact, and high visibility. Your solutions will lead to billions of dollars of impact on either the topline or the bottom line of Amazon's business. You will work closely with Product Managers, Software Engineers, and other Scientists, to deeply understand FBA Seller business problems and priorities. You will design and launch new systems. You will solve real world pricing, inventory, transportation, and location problems with millions of unique products involving hundreds of thousands of Selling Partners and tens of millions of customers around the world. Throughout the process, you will be supported by a team of research and data scientists, as well as product managers, and software engineers. You will also collaborate with the broader decision and research science community in Amazon to expand the horizon of your work and mentor engineers and scientists. You will be entrepreneurial, wear many hats, and work in a fast-paced, high-energy, highly collaborative environment.About the teamSellers are a critical part of Amazon's ecosystem to deliver on our vision of offering the Earth's largest selection and lowest prices. Fulfillment by Amazon (FBA) is a service that allows sellers to outsource order fulfillment to Amazon, allowing sellers to leverage Amazon's world-class facilities to provide customers Prime delivery promise. S