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Zazz

Senior React Native Engineer-Canada

  • Toronto, ON, Canada
  • Greater Toronto Area, Canada, Canada

Full-time

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The original listing is kept below for reference.

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Job type
Full-time
Closing date
Posting language
English
Posted

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Original job description

Archived listing. The details below describe a past opening.

Role summary. Lead engineer on the delivery team. Owns the highest-complexity screens and integrations.

Responsibilities.

  • Deliver highest-complexity screens and integrations across three delivery waves.
  • Set engineering patterns, reference implementations, and code standards for the team.
  • Pair with the client's engineers on paired-programming and knowledge transfer.
  • Own payment integration, Auth0 identity flow, and push notification architecture at code level.
  • Lead pull request reviews.
  • Contribute to Architecture Decision Records.
  • Support the four self-sufficiency exercises during hypercare (deploy hotfix, onboard from KB, restore during simulated P1, extend using established patterns).

Must-have technical experience

  • 8+ years mobile engineering, minimum 5 years hands-on React Native in production.
  • Direct production experience with React Native 0.76+ and the New Architecture (Bridgeless, TurboModules, Fabric).
  • Strong TypeScript, comfortable with strict mode.
  • Hands-on with Hermes engine and Expo SDK 52 prebuild.
  • Direct experience with TanStack Query and Zustand.
  • Detox authorship for end-to-end mobile tests, both iOS and Android.
  • Prior integration of Apple Pay and Google Pay (tokenised payment handles).
  • Prior integration of Auth0 or equivalent OIDC identity in mobile.
  • Prior implementation of APNs and FCM push notifications, including token migration on version upgrades.
  • Universal Links and App Links deep-link routing.

Native platform expertise (required).

  • Comfortable reading and writing native iOS (Swift or Objective-C) and native Android (Kotlin or Java) at the level required to author or maintain TurboModules bridging native SDKs into React Native.
  • Prior experience with iOS Keychain and Android Keystore for secure token storage.

Migration and replatform experience (required).

  • Direct experience on at least one mobile replatform from native to React Native, in production.
  • Understanding of auth token migration, push token re-registration, cached data reconciliation on first launch after replatform.

Industry background (preferred).

  • Regulated Canadian mobile experience (public sector, transportation, financial services).
  • Bilingual (English and French) app delivery experience.
  • WCAG 2.1 or 2.2 accessibility delivery.
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More about this job

Responsibilities

Lead delivery of the most complex React Native screens and integrations across three delivery waves, while establishing engineering patterns, reference implementations, and code standards. Own payment, identity, and push notification integrations; review pull requests, contribute to architecture decisions, pair with client engineers, and support hypercare self-sufficiency exercises.

Requirements

Requires at least eight years of mobile engineering experience, including five years of production React Native experience and hands-on work with React Native 0.76+ and its New Architecture. Candidates must also have native iOS and Android development expertise, production replatforming experience, and experience with payments, identity, push notifications, secure token storage, and mobile end-to-end testing.

Skills

  • React Native
  • TypeScript
  • React Native New Architecture
  • Swift
  • Objective-C
  • Kotlin
  • Java
  • TurboModules
  • Fabric
  • Hermes
  • Expo
  • TanStack Query
  • Zustand
  • Detox
  • Apple Pay and Google Pay
  • Auth0 and OIDC

Visa sponsorship

Not detected in the job text

Categories

  • Software
  • Technology
  • Engineering
  • Management & Leadership

Keywords

  • React Native 0.76+
  • React Native New Architecture
  • Bridgeless
  • TurboModules
  • Fabric
  • TypeScript
  • Hermes
  • Expo SDK 52
  • TanStack Query
  • Zustand
  • Detox
  • Apple Pay
  • Google Pay
  • Auth0
  • OIDC
  • APNs
  • FCM
  • Universal Links
  • App Links
  • Swift
  • Objective-C
  • Kotlin
  • Java
  • iOS Keychain
  • Android Keystore
  • Mobile Replatforming
  • Token Migration
  • Pull Request Reviews
  • Architecture Decision Records
  • WCAG 2.1/2.2

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