The Middle-Middle Transportation Technology team builds the underlying technology that powers Amazon's middle-mile network across the globe. Middle mile operations has finite resources (Trailers, Containers) to move the loads to serve the customer demands. Often these moves involve moving the loads from Fulfillment center to Delivery Stations. There is always an imbalance created within the middle mile network where resources accumulate at certain places . The Network balance and Equipment Optimization(NBEO) team within Middle Mile, owns systems that reposition the resources (Trailers, Container) at the right place at the right time while minimizing the cost. This is a unique opportunity to work on cutting edge NP Hard problems/Algorithms that saves Amazon MM of $ in freight movements.The ideal SDE will be instrumental in shaping the product direction, developing and tuning algorithms with research scientists, collaborate with stakeholders to model the planning components, and develop scalable systems that help us build a planning flywheel - highest performance, at the lowest cost, and with the best delivery experience. You will work with other tech teams to model and consume inputs such as carrier supply, cost/rates, transit times, and distances in an efficient and automated fashion. The work done on the team will help our transportation systems scale beyond just road transportation to Air, Rail and Ocean to build a truly multi-modal global transportation network.Key job responsibilitiesYour Responsibilities:-Work closely with senior engineers, product managers and business stakeholders to design and implement highly available web servicesWork with research science to develop and model new planning related algorithmsLead a small team of engineers and lead execution of projects while ensuring that engineering best practices are followedAssist directly and indirectly in the continual hiring and mentoring of other SDEsThe ideal candidate will be passionate about solving complex optimization problems and architecting and implementing highly-available distributed systems. You obsess about the customer experience and the needs of the business. Finally, you have a strong focus on operational excellence and take pride in building maintainable systems at scale.We are open to hiring candidates to work out of one of the following locations:Bellevue, WA, USA- 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- 3+ years of full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations experience- Bachelor's degree in computer science or equivalent- Experience programming with at least one modern language such as Java, C++, or C# including object-oriented designOur compensation reflects the cost of labor across several US geographic markets. The base pay for this position ranges from $115,000/year in our lowest geographic market up to $223,600/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. Applicants should apply via our internal or external career site.Amazon is committed to a diverse and inclusive workplace. Amazon is an equal opportunity employ