Square, Inc. | Software Engineer, Mobile Security | New York (preferred), San Francisco (for senior or exceptional candidates) | <a href="
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.
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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

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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.

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Who we're looking for:
  reverse engineers familiar with C

  mobile engineers familiar with C and with Android or iOS internals

  backend engineers

  an engineering manager (NYC only)

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Tech we use: C, Java, Objective-C, Python, Ruby MySQL, Vertica, Spark
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If this matches your background and interests, we'd love to talk to you -- email me at REDACTED_EMAIL