• Design and build machine learning systems that process data sets from the world’s largest consumer services • Use unsupervised machine learning, supervised machine learning, and deep learning to detect fraudulent behavior and catch fraudsters • Build and optimize systems, tools, and validation strategies to support new features • Help design/build distributed real-time systems and features • Use big data technologies (e.g. Spark, Hadoop, HBase, Cassandra) to build large scale machine learning pipelines • Develop new systems on top of real-time streaming technologies (e.g. Kafka, Flink)

**Responsibilities:**As a Senior Software Developer, you will:** - Build new and refine existing feature offerings in one or more of our core products - Explore new technologies for use within our application - Consult with Product Managers and UX Designers about proposed new features - Engage with other feature delivery teams to provide the best possible solutions for our customers - Monitor logs, metrics, and traces as well as provide triage support as needed for our application - Mentor a team of software developers - Provide technical guidance to the team - Build new and refine existing feature offerings in our flagship product - Help set the technical direction of our product and technology offerings

• Be a leader on our product development team, working with software engineers, machine learning engineers, and product leads • Take a leading role in architecture discussions for the components of our product • Work in an agile environment, rapidly delivering shippable features into production • Consider design constraints as you deliver backend APIs meeting front-end requirements, and communicate these ideas regularly with the team

• work and learn in our product development team, gaining mentorship from software engineers, machine learning engineers, and product leads to help develop our product for end-users • ask for help when you need it, make progress when you don't, and learn how to tell the difference • work in an agile environment, rapidly delivering shippable features into production • learn to understand and empathize with our customers who are awesome entrepreneurs growing small and medium sized businesses in their communities