Fullstack Mobile Developer (React Native, Supabase) - PT - NA/LATAM/EMEA

Arc Full-time

United States

25 days ago

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Role details

Contract type

Temporary contract

Employment type

Part-time (≤ 32 hours)

Experience level

Expert

Experience required

5 years minimum

Working hours

Regular working hours

Job source

arc.dev

Tech stack

Java (Programming Language) Computer Animation Application Programming Interfaces (APIs) Amazon Cloudfront Amazon S3 IOS Applications Apple IOS Push Technology Mobile Application Software PostgreSQL Systems Integration Visual Effects

+7 more

Firebase Backend Kotlin Stripe Cloudflare React Native Google Play

Job description

Build a single React Native codebase targeting both iOS and Google Play from the existing Lovable front end and written spec
Stand up backend infrastructure: Supabase (auth, data), Stripe/RevenueCat (in-app purchases), push notifications (local + remote)
Integrate pre-generated narrated audio (11Labs-generated files) into each practice, syncing playback timing to on-screen content and breathwork pacing
Recreate custom animations already built on the front end (organic “diffuse color” pulse/heartbeat effect, milestone and ritual-completion animations)
Implement haptic feedback tied to practice pacing and completions
Architect and implement object storage + CDN delivery for a growing library of audio practices and ambient soundscapes

Requirements

Demonstrated custom animation work - organic motion or non-trivial visual effects beyond standard Animated API usage
Experience writing or integrating native iOS (Swift/Objective-C) and Android (Kotlin/Java) modules from a React Native project
Supabase or equivalent backend integration experience
In-app purchase implementation (Stripe, RevenueCat, or equivalent)
Push notification implementation (local and remote)
Comfortable working from a detailed written spec without design handholding
Experience designing object storage + CDN delivery for media assets in a production mobile app (e.g., S3 + CloudFront, Cloudflare R2, Supabase Storage, Firebase Storage) - able to recommend the architecture, not just wire up playback, * WidgetKit (iOS) or Jetpack Glance (Android) home screen widget experience
HealthKit or Health Connect integration
Core Haptics (iOS) or custom VibrationEffect (Android)
Experience with variable/display web fonts (e.g., Cormorant Garamond) in a native context
Familiarity with breathwork, wellness, or mindfulness app conventions