Zazz

IT Services and IT Consulting · Canada

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13 days ago
Technical Architect (React Native) - Canada
Zazz
Vaughan, ON · Woodbridge South, Ontario
Full-time
23 days ago
React Native Engineer - Canada
Zazz
ON · Woodbridge South, Ontario
Full-time
28 days ago
Lead React Native Engineer - Canada
Zazz
Vaughan, ON · Woodbridge South, Ontario
Full-time

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28 days ago

Zazz

Lead React Native Engineer - Canada

Vaughan, ON, Canada
Woodbridge South, Ontario, Canada

Full-time

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At a glance

Automatically prepared from the listing. Check the original description for the full requirements.

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Responsibilities

The lead engineer will own high-complexity screens and integrations while setting engineering patterns and code standards for the delivery team. They are responsible for leading pull request reviews, contributing to architecture decisions, and supporting hypercare exercises.

Requirements

Candidates must have over 8 years of mobile engineering experience, including at least 5 years of hands-on production experience with React Native. Proficiency in native iOS and Android development, along with experience in mobile replatforming and secure token storage, is required.

Experience

10+ years

Working hours

40 hours per week

Job type

Full-time

Work arrangement

On-site

Skills

React Native
TypeScript
Swift
Objective-C
Kotlin
Java
Hermes Engine
Expo SDK
TanStack Query
Zustand
Detox
Auth0
Apple Pay
Google Pay
APNs
FCM

Visa sponsorship

Not detected in the job text

Keywords

React Native
TypeScript
Mobile Engineering
Swift
Objective-C
Kotlin
Java
Hermes
Expo SDK
TanStack Query
Zustand
Detox
Auth0
OIDC
APNs
FCM
Apple Pay
Google Pay
Universal Links
App Links
TurboModules
Fabric
Bridgeless
Replatforming
Accessibility
WCAG
Architecture Decision Records
Hypercare
iOS Keychain
Android Keystore

Original job description

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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Details last changed Sep 16, 2026. About these details

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