Software Development Engineer II Customer Segmentation

Join the Customer Segmentation team and help build intelligent systems which understand customers better. We do this through a highly available lowlatency web api which in realtime evaluates membership in customer segments (customer groups) defined over customer behavioral events and attributes. These segments are used for hundreds of usecases across Amazon and subsidiaries: automatically applying promotions to customer orders during checkout blocking irrelevant advertisements and personalizing the customer experience across Amazon websites apps and devices even the words spoken by Alexa!

Our growing team owns a critically available 99.99 uptime) lowlatency <40ms) and highvolume > 1 million requests per second) webservice which supports updates segment membership in realtime in as customers take actions (e.g. make a purchase subscribe to Amazon prime etc.. Our realtime updates ensure the most responsive and relevant experience possible for Amazon customers. At the same time we coral large pools of historical customer behavioral data to ensure efficiency.

We need software engineers to help unlock new new usecases for Amazon businesses and consumers ensure the privacy of customers and invent the next generation of worldclass segmentation and targeting software.

Key job responsibilities
Software engineers design build and support targeting software features. The Customer Segmentation team has a strong ownership model where every engineer takes the lead one or more projects at a time. We lead all parts of the project lifecycle:

brainstorming / conception
clarifying customerfacing and technical requirements
designing software
building testing and deploying
providing support and debugging of live systems

In addition our engineers are dedicated to building the best team possible. Engineers are partnered with consultants for project work and mentors/mentees for career development. Within months new engineers are giving back supporting new other members and building a rewarding place to work.

About the team
Customer Segmentation supports hundreds of Amazon and subsidiary internal teams with their consumerfacing features. We partner with teams across the spectrum including: Website Personalization Promotions Payments Music Prime Video Whole Foods Audible features for Businesses customers and Underserved Populations. The scale at which we operate provides opportunity for big impact. And the breadth of experiences we support provides exciting visibility into the ever changing world of Amazon.

Our technical strengths focus around 1 operating a scalable highly available webservice and 2 largescale data processing. Our signature service is a critical dependency for some checkout workflows on the Amazon website and we operate dozens of data pipelines processing >100TB of data daily. Our engineers are frequently solving scaling and efficiency challenges designing distributedsystems and inventing process improvements and new features to guarantee continued availability in the months ahead.

3 years of noninternship professional software development experience
2 years of noninternship design or architecture (design patterns reliability and scaling) of new and existing systems experience
Knowledge of professional software engineering & best practices for full software development life cycle including coding standards software architectures code reviews source control management continuous deployments testing and operational excellence
Experience programming with at least one software programming language
Experience with or interest learning Java and Scala
Datadriven problem solving and debugging skills

3 years of full software development life cycle including coding standards code reviews source control management build processes testing and operations experience
Masters degree in computer science or equivalent
Experience with distributed systems.
Experience with large data sets >100TB) and related technologies: Spark Scala MapReduce etc.
Experience supporting a high volume high availability and lowlatency webservice >99.9 availability >100K requests per second <100ms latency)
Experience communicating with users technical teams and management to collect requirements describe software product features and review technical designs
Strong Mathematical background

Amazon is committed to a diverse and inclusive workplace. Amazon is an equal opportunity employer and does not discriminate on the basis of race national origin gender gender identity sexual orientation protected veteran status disability age 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.

Our compensation reflects the cost of labor across several US geographic markets. The base pay for this position ranges from $129300/year in our lowest geographic market up to $223600/year in our highest geographic market. Pay is based on a number of factors including market location and may vary depending on jobrelated knowledge skills and experience. Amazon is a total compensation company. Dependent on the position offered equity signon 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 This position will remain posted until filled. Applicants should apply via our internal or external career site.