Embedded Audio Firmware Engineer for Mobile & BLE

Digitailor; San Francisco (CA); On-site; USD 160,000 - 250,000; Full time

Job summary

Pocket is seeking an embedded firmware engineer for an in‑person role in San Francisco, 6 days a week. You’ll read schematics, bring up peripherals, and trace issues from app symptoms to drivers on Bluetooth/BLE, USB or Wi‑Fi.

You should have a degree in EE/CS or equivalent, strong debugging skills on real hardware, and comfort with RTOS like Zephyr or ARM Cortex‑M platforms. Prior audio‑FW or codec experience is a plus.

Qualifications

• Ability to read schematics and datasheets, bring up peripherals and follow a problem from an app symptom to driver/hardware.
• Understanding of embedded device interfacing with phones over Bluetooth/BLE, USB or Wi‑Fi with commands, status, retries, compatibility.
• Open to any experience level with no minimum years; show what you’ve built and how you solve embedded problems.
• Audio‑device firmware experience is a strong plus; experience with mic/ADC paths, I²S/PDM, PCM/WAV, codecs is valuable.
• Experience with Zephyr or similar RTOS, ARM Cortex‑M platforms or vendor SDKs is a strong plus.
• Experience with flash/SD storage, FAT or LittleFS, recovery after power loss, and preserving files during concurrent recording/sync is a strong plus.
• Experience integrating firmware with iOS/Android apps, BLE GATT services, and device SDK interfaces is a strong plus.
• Experience taking embedded products from prototype to manufacturing and supporting devices in customers’ hands is a strong plus.

Responsibilities

Skills

Schematic reading

Peripherals bring-up

Bluetooth/BLE/USB/Wi‑Fi interfaces

Problem reproduction from field

Ownership & cross-team communication

Embedded systems fundamentals

Audio firmware concepts

Debugging across phones/OS versions

Education

Bachelor's degree in EE/CE/CS or equivalent

Tools

Git

Zephyr RTOS

ARM Cortex‑M

Python scripting

Job description

Pocket is seeking an embedded firmware engineer for an in‑person role in San Francisco, 6 days a week. You’ll read schematics, bring up peripherals, and trace issues from app symptoms to drivers on Bluetooth/BLE, USB or Wi‑Fi.

You should have a degree in EE/CS or equivalent, strong debugging skills on real hardware, and comfort with RTOS like Zephyr or ARM Cortex‑M platforms. Prior audio‑FW or codec experience is a plus.