Signal Processing Developer

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: TYPE OF WORK

Gig

: SALARY

$1500 - $2000 / month

: HOURS PER WEEK

TBD

: DATE UPDATED

Feb 13, 2026

JOB OVERVIEW

We’re building a camera-based biometric measurement system for a mobile health app. The core technology: remote photoplethysmography (rPPG) — using the phone camera to measure heart rate variability without any hardware.

The Technical Challenge

• React Native (Expo bare workflow) mobile app

• Fingertip PPG via rear camera + flash (primary method)

• Face rPPG via front camera (secondary/accessibility method)

• Real-time signal processing: RGB extraction ? bandpass filter ? POS/CHROM algorithm ? RR intervals ? RMSSD + coherence

• Signal quality gating (SNR-based: HIGH / MEDIUM / LOW / NONE)

• Coherence score (0.0–1.0) drives real-time Lottie animation parameters

• Offline-first: all computation on-device, zero API calls, zero per-session cost

SKILL REQUIREMENT

Python Mobile Development Swift

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Job Post	Reporter	Rank	Reason	Date

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Signal Processing Developer

Please login or register as jobseeker to apply for this job.

TYPE OF WORK

SALARY

HOURS PER WEEK

DATE UPDATED

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