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Square, Inc. | Software Engineer, Mobile Security | New York (preferred), San Francisco (for senior or exceptional candidates) | https://squareup.com/careers Square's Mobile Security team is hiring in our SoHo, NYC office. We're a full-stack engineering team building Square's software tamper detection and remote attestation system. ---- What we do: research iOS and Android attacks and countermeasures build backend services to filter and analyze system-level telemetry from the millions of devices running our software develop heuristics and models to detect malicious activity collaborate with Square's mobile, hardware, and anti-fraud teams ---- Why it's cool: We work across many disciplines: security, mobile, backend, data infrastructure, data science. Our system is critical: without it, some Square products couldn't exist. Several companies have built systems like this; ours is the most advanced. We catch real hackers and criminals. ---- Who we're looking for: reverse engineers familiar with C mobile engineers familiar with C and with Android or iOS internals an engineering manager (NYC only) ---- Tech we use: C, Java, Objective-C, Python, Ruby MySQL, Vertica, Spark ---- If this matches your background and interests, we'd love to talk to you -- email me at neal@squareup.com