Airbnb was born in 2007 when two Hosts welcomed three guests to their San Francisco home, and has since grown to over 4 million Hosts who have welcomed more than 1 billion guest arrivals in almost every country across the globe. Every day, Hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way.

The Community You Will Join:

Everyone at Airbnb thinks about trust, but our team obsesses over it daily. At the core of trust is safety, and thus we spend a significant amount of our time and energy keeping the community safe. The Trust team is responsible for protecting our community and platform from fraud while also ensuring our hosts, guests, homes, and experiences meet our high standards. We constantly work to fight against online fraud (such as monetary loss, compromised accounts, spam and scam in messages, fake inventory, etc.) as well as offline fraud (theft, property damage, personal safety, etc.). We also work on onboarding and screening of users, and think about complex topics like identity and reputation to ensure that every interaction with Airbnb helps build trust in us and our community. Trust Engineering is responsible for the technology vision and development of a complex stack that runs on every key interaction on the platform.

The Difference You Will Make:

Connected Accounts (aka Trust Graph) is a knowledge graph platform that models connections between Airbnb users. It helps identify fraudulent users who try to circumvent existing defenses by creating duplicate accounts or collude to execute fraudulent transactions. We also build and maintain various ML models trained on top of this graph data model. As a Senior Software Engineer on the team, you will be owning and driving critical initiatives that help maintain the Trust and Safety of Airbnb platform. This role requires strong cross-functional collaboration with various product and platform teams to help shape the long term technical vision for the team.

A Typical Day: 

Your contributions take a variety of shapes:

• Hands on backend engineering work spanning product enhancements, core infrastructure upgrades as well as improving ML model serving.
• Work closely with other trust defense and platform teams to tackle the changing landscape of fraud attacks by coming up with innovative solutions to detect fraud via knowledge graphs.
• Being a collaborative teammate that can help elevate the rest of the engineering organization.
• Drive (responsible and accountable for) projects with large open-ended scope spanning a product or platform, and contribute to organizational priorities.

Your Expertise:

• 6+ years of backend engineering software development experience
• Bachelor’s and/or Master’s degree, preferably in CS, or equivalent experience
• Strong programming (Scala / Python / Java/ C++ or equivalent) skills for hands-on IC work
• Experience with designing and building large scale production systems or features
• Passion for delivering products end-to-end: from ideation through planning and scoping to implementation and experimental A/B testing.
• Outstanding communication and interpersonal skills and detail oriented.
• Capable of making data driven decisions and articulating tradeoffs in any technical decisions.
• Mentorship to junior developers
• Experience in knowledge graph systems is a plus.

Your Location:

This position is US - Remote Eligible. The role may include occasional work at an Airbnb office or attendance at offsites, as agreed to with your manager. While the position is Remote Eligible, you must live in a state where Airbnb, Inc. has a registered entity. Click here for the up-to-date list of excluded states. This list is continuously evolving, so please check back with us if the state you live in is on the exclusion list. If your position is employed by another Airbnb entity, your recruiter will inform you what states you are eligible to work from. 

Our Commitment To Inclusion & Belonging:

Airbnb is committed to working with the broadest talent pool possible. We believe diverse ideas foster innovation and engagement, and allow us to attract creatively-led people, and to develop the best products, services and solutions. All qualified individuals are encouraged to apply.

We strive to also provide a disability inclusive application and interview process. If you are a candidate with a disability and require reasonable accommodation in order to submit an application, please contact us at: reasonableaccommodations@airbnb.com. Please include your full name, the role you’re applying for and the accommodation necessary to assist you with the recruiting process. 

We ask that you only reach out to us if you are a candidate whose disability prevents you from being able to complete our online application. 

How We'll Take Care of You:

Our job titles may span more than one career level. The actual base pay is dependent upon many factors, such as: training, transferable skills, work experience, business needs and market demands. The base pay range is subject to change and may be modified in the future. This role may also be eligible for bonus, equity, benefits, and Employee Travel Credits.