X1 is building the smartest credit card ever made. We power over $800M in annualized spending and are rapidly growing.

We have been featured in publications like Business Insider, Fast Company, Forbes, Inc., Money, CNBC, CNET, Nasdaq, TechCrunch and Wired. 

We have raised over $60M from some of the most iconic investors in Silicon Valley, who founded Google Analytics, Y Combinator Continuity, PayPal, Affirm, Box, Yelp, and more. These include David Sacks, Max Levchin, Wesley Chan, CEOs of Yelp, Box, and Y Combinator Continuity, The Chainsmokers, and Jared Leto.

Build world class consumer finance software to serve X1's customers.

An elite engineering team with alumni from Affirm, Stripe, Google, Pinterest, Y Combinator, Stanford, MIT, and more.

As an engineer focused on our underwriting and fraud systems, you will design and scale these critical systems helping rapidly grow the business, expanding to new customer segments all while managing risk. This spans a wide range of problems across our underwriting models, identity verification pipelines, fraud classifiers, and more all in our modern Scala based stack.

- An undergraduate or graduate computer science degree (or a related field)

- Strong computer science fundamentals

- Strong programming experience with any one language

- Prior Scala experience is not required

- Good communication skills

- Hungry to learn and grow alongside a growing business

- Basic training or experience in statistical inference

As an early team member at X1 you will be a critical voice and have significant influence over the direction of the company. We will compensate you well, invest deeply in your development, and ensure this is the single best work experience of your life. If you think you’d be a good fit, we’d love to hear from you.

To learn more, see https://x1.co/