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Software Engineer - Android Connected Devices

Cash App

$185,200 - $326,800
Dec 8, 2025
San Francisco, CA, US
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Square is looking to solve hard technical problems at the intersection of hardware, product, and platform to create memorable and seamless experiences for Square's ecosystem, spanning from internal teams to merchants.

Requirements

  • Strong experience building production mobile apps in Java and Kotlin
  • A background in building reliable systems that perform consistently in a variety of environments
  • Hands on experience connecting mobile apps to hardware through BLE, USB, or related methods

Responsibilities

  • Build and improve the mobile experiences that power Square’s connected hardware products using Java and Kotlin
  • Work across the full mobile stack, from networking to UI, to create smooth and reliable hardware integrations
  • Develop systems that stay reliable and resilient so sellers can accept and report payments in any network or device conditions
  • Partner closely with cross functional engineers to ship high quality features
  • Work with product managers and designers to shape product scope and deliver clear, intuitive user experiences
  • Use customer feedback to guide improvements and strengthen overall product quality
  • Work directly on mobile and hardware integrations including BLE, USB, and similar technologies

Other

  • At least 8 years of relevant industry experience
  • A history of working closely with hardware, software, and product teams
  • A customer first mindset and a comfort level solving complex problems across different parts of the ecosystem
  • We believe in being fair, and are committed to an inclusive interview experience, including providing reasonable accommodations to disabled applicants throughout the recruitment process.
  • Block is an equal opportunity employer evaluating all employees and job applicants without regard to identity or any legally legally protected class.