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← Cala Health

Senior Firmware Engineer, Research

Cala Health
Location
San Mateo, CA
Posted
20 days ago
Department
Hardware
Salary
$125,000 - $175,000
What they actually want (must-haves)
  • BS/MS in Computer Science, Computer Engineering, Electrical Engineering, or related field
  • 5+ years developing embedded firmware, including low-power and small-footprint designs
  • Strong C programming skills and proficiency in Python
  • Bare metal firmware development on microcontrollers (ARM preferred)
  • Experience with ARM Cortex M0, M3, or M4
  • Experience with BLE, including debugging connection and throughput issues in the real world
Nice to have
  • Experience developing firmware in an ISO 13485 medical device quality system
  • Experience supporting devices used in human clinical studies or other regulated research settings
  • Experience developing simple desktop or mobile app prototypes to visualize or analyze sensor data from connected embedded systems
  • RTOS experience with Zephyr, FreeRTOS, Linux, or comparable systems
  • Experience taking a research prototype through to a released product
What the job really is

Cala is looking for a Senior Firmware Engineer to join their R&D team, focusing on developing and testing firmware for clinical studies. The role involves building prototypes, supporting clinical staff, and ensuring that firmware documentation is clear for commercial teams. Candidates will need to adapt to various tasks and work closely with engineers and clinicians in a small team environment.

Things to weigh
  • Hybrid work model with onsite requirement 3 days per week
  • No specific salary details beyond the range provided
  • AI tools are not allowed during interviews and technical testing
  • Small team environment may require flexibility in responsibilities
Job score3.6/5
Benefits1/5
Freshness4/5
Career value4/5
Role clarity4/5
Pay transparency5/5

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