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About the Role

Pocket is building a premium hardware plus software product in the AI voice recorder space. We are obsessed with quality and speed and are scaling very fast in the US and European markets. We aim to build a device experience that can become the category leader.

Responsibilities

Read schematics and datasheets
Bring up peripherals
Follow a problem from an app symptom down to the driver or hardware
Understand how embedded devices interface with phones or other hosts over Bluetooth/BLE, USB or Wi-Fi
Write Git-compatible code with tests that catch failures on real hardware
Take ownership and communicate clearly across teams
Turn intermittent field reports into reproducible issues and verified fixes

Requirements

Ability to read schematics and datasheets
Ability to bring up peripherals
Ability to follow a problem from an app symptom down to the driver or hardware
Understanding of how embedded devices interface with phones or other hosts over Bluetooth/BLE, USB or Wi-Fi, including commands, status reporting, disconnects, retries, compatibility and partial transfers, or the ability to learn this quickly
Proficiency with Git, maintainable code, and tests that catch failures on real hardware
High ownership and clear communication across teams
Ability to turn an intermittent field report into a reproducible issue and a verified fix
Audio-device firmware experience (voice recorders, microphones, headsets, wearables, or other products where capture quality and uninterrupted recording matter) is a strong plus
Experience with microphone and ADC signal paths, I²S/PDM, PCM/WAV, Opus or MP3 codecs, gain control, filtering, noise suppression or voice activity detection, and the ability to measure audio quality and explain the tradeoffs, is a strong plus
Experience with Zephyr or a similar RTOS, ARM Cortex-M, Actions Semiconductor platforms, or vendor SDKs and proprietary DSP components is a strong plus
Experience with flash or SD storage, FAT or LittleFS, recording recovery after power loss, and preserving files during concurrent recording and sync is a strong plus
Experience with low-power consumer electronics, bootloaders, secure boot or signed updates, Python scripting, CI and production test fixtures is a strong plus
Experience integrating firmware with iOS or Android companion apps, designing BLE GATT services or device SDK interfaces, and debugging interoperability across phone models, OS versions and app background states is a strong plus
Experience taking embedded products from prototype through manufacturing and supporting devices already in customers’ hands is a strong plus

Skills

Bluetooth/BLE
USB
Wi-Fi
Git
Audio-device firmware
Microphone and ADC signal paths
I²S/PDM
PCM/WAV
Opus
MP3 codecs
Gain control
Filtering
Noise suppression
Voice activity detection
Zephyr
RTOS
ARM Cortex-M
Actions Semiconductor platforms
Vendor SDKs
DSP components
Flash storage
SD storage
FAT
LittleFS
Python scripting
CI
iOS
Android

Location

San Francisco

Work Type

Full-time
In person

Experience Level

Open to any experience level
No minimum years of experience

Education Level

Degree in Electrical Engineering, Computer Engineering, Computer Science, or equivalent practical experience

Salary/Compensations

$160K–$250K

About the Company

Pocket is a Y Combinator W26 company building a premium hardware plus software product in the AI voice recorder space.
We are obsessed with quality and speed.
We are scaling very fast in the US and European markets and building a device experience that can become the category leader.