
Bring music to your life. For adults and kids. A revolution in music education.
Product: AI-powered 88-key smart piano with built-in computer, touchscreen, and PianoOS
Headquarters: Palo Alto, California
Founder / CEO: Alex Iceman
Employees (approx.): 13
Music education and consumer musical instruments (piano learning/coaching).
Music technology / Consumer musical instruments
โFounder Alex Iceman is reported as the company's funderโ
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Real-Time Hi-Fi Platform โ Musical Instrument Hardware
Polaro is building a reference-grade embedded audio platform for a next-generation digital instrument.
We are hiring a senior engineer whoย owns the real-time audio stack end-to-end .
Owning:
Linux (x86)
RTOS-based MCU (qualcomm or NXP i.MX RT class)
Synthesis โ DSP โ routing โ buffering โ DAC โ amplifier
Zero underruns, pops, drift
Stable clocking and synchronization
Predictable latency under system load
I2S / TDM
DMA / interrupts
Clock topology
ADC/DAC integration
You are responsible for how the instrument actually sounds and behaves in real time.
Required skills (must have)
Interrupts, DMA, lock-free buffers
ISR vs task context
Deterministic scheduling
RTOS (FreeRTOS, Zephyr, similar)
Embedded Linux audio (ALSA, JACK, PipeWire or custom engines)
You must care about transient response, phase coherence, headroom, and latency โ and know how to implement them in firmware.
This role is about shipping a world-class embedded audio system.
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