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Cartesian Systems

Software Engineer (Mobile & Sensing)

Cambridge, MAmidAdded today

About this role

Cartesian seeks a mobile engineer to build SDKs and end-user applications for an indoor inventory positioning system deployed across retail stores globally. You'll own the full development lifecycle, integrate with diverse hardware peripherals (RFID, barcode readers), and work autonomously in a small, MIT-founded team based in Cambridge.

What you'll do

  • Design and develop mobile SDKs and end-user applications that collect sensor data and provide real-time spatial positioning feedback
  • Integrate mobile applications with peripheral hardware including RFID scanners, barcode readers, and third-party systems
  • Own complete project lifecycle from prototyping new features to shipping and maintaining production systems
  • Collaborate cross-functionally with business, sales, and customers to define requirements and prioritize work
  • Ensure mobile applications are performant, maintainable, and handle complex data streaming scenarios
  • Contribute to backend systems and infrastructure as needed to support mobile functionality

What they're looking for

  • Mobile development (iOS and/or Android)
  • Hardware integration and sensor data handling
  • SDK design and architecture
  • Real-time data collection and streaming
  • Testing on physical hardware and devices
  • Systems thinking and end-to-end project ownership
  • Backend development (preferred)
  • Clear technical communication and documentation
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Cartesian Systems

Cartesian Systems builds an indoor spatial intelligence platform for retail that uses machine learning to enable positioning and perception capabilities. The company is hiring ML Scientists and engineers to develop and deploy perception models and features for enterprise retail customers.

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Likely interview questions

  • Walk us through a complex mobile project you owned end-to-end. How did you handle unknowns and prioritize across technical quality and business needs?
  • Describe your experience integrating mobile apps with external hardware. What challenges arose and how did you solve them?
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