Senior Software Engineer

Risk Engineering works to protect Square and our customers $25B+ in payments from fraud and payment disputes. We build systems to detect and respond to potential fraud threats, provide outstanding tools to agents for investigating fraud events, and give our customers seamless web and mobile experiences to manage and fight payment disputes. Our mission is to protect Square, protect our customers, and make a complicated and sometimes painful process understandable to all.

Fraud Risk is looking for a Senior Software Engineer to help us build solutions that further these goals. You will collaborate with teams across the company on new product and market launches to fight fraud and make realtime data available for scalable ML-based fraud decisioning. Help us solve these challenging problems with data science, machine learning, and efficient tooling!

You will:

• Work with teams and roles across Square to develop new solutions and improve existing processes addressing fraud
• Develop essential tooling to act quickly on potential fraud
• Design fault-tolerant systems so the team can be brave, move fast, and break things, without ever showing a negative impact to customers
• Advocate and model engineering best practices
• Mentor other engineers

Requirements

You have:

• 5+ years of software engineering experience
• Interest in working full-stack across multiple technical domains, including backend microservices and internal tooling
• Experience building products end to end - technical design, implementation, testing, launch, and maintenance
• Metrics-oriented mindset: you want your work to be measurable and impactful
• Comfortable working with a globally distributed team of data scientists, engineers, and risk experts

Technologies we use and teach:

• Java, Guice, Google Cloud Platform, Amazon Web Services
• Go, Ruby on Rails, Ember, React, GraphQL
• Protocol Buffers
• MySQL, Hibernate, jOOQ