We believe everyone should be able to participate and thrive in the economy. So we’re building tools that make commerce easier and more accessible to all. We started with a little white credit card reader but haven’t stopped there. Our new reader helps our sellers accept chip cards and NFC payments, and our Cash app lets people pay each other back instantly. We’re empowering the independent electrician to send invoices, setting up the favorite food truck with a delivery option, helping the ice cream shop pay its employees, and giving the burgeoning coffee chain capital for a second, third, and fourth location. Let’s shorten the distance between having an idea and making a living from it. And make it easier for customers to shop and pay at their favorite businesses. We’re here to help sellers of all sizes start, run, and grow their business—and helping them grow their business is good business for everyone.

We build the technology that allows Square to ensure that our sellers’ mobile devices are safe for Software PIN in Chip and PIN markets. We are a full-stack engineering team responsible for in-app remote attestation for Android and iOS, back end tamper response services, data platform, and anomaly detection. We stay on top of mobile security vulnerabilities, threats, and attacks in the wild to design and implement detections.

We’re looking for more server engineers interested in owning server-side features that support our remote attestation, tamper detection, and response capabilities.

You will:

• Develop detections for mobile security threats for Android and iOS
• Research and respond to changes in mobile platforms, threats, and attacks in the wild
• Analyze device telemetry data to detect attacks and identify anomalies
• Work cross-functionally with our mobile client, risk, and hardware teams
• Apply cryptographic primitives and protocols to remote attestation and data protection

You have:

• 4+ years of relevant professional experience
• A background in software engineering with a deep passion for protecting against and hunting for mobile threats
• Demonstrated experience developing, deploying, and monitoring secure systems

Even better:

• Security experience/background
• Data Science experience/background

At Square, we value diversity and always treat all employees and job applicants based on merit, qualifications, competence, and talent. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. We will consider for employment qualified applicants with criminal histories in a manner consistent with the requirements of the San Francisco Fair Chance Ordinance.