Senior Mobile App Engineer - React Native & Social Features

Legend Corp; Toronto; On-site; CAD 110,000 - 150,000; Full time

Benefits offered by this job

Annual discretionary bonus

Paid annual leave

Global Legend events

Job summary

Legend Corp is seeking an experienced App Developer to join our small, highly collaborative mobile squad. You will build and evolve our React Native app using Expo, delivering features for social feeds, bet sharing, chat, and interactive experiences.

You’ll work with Product, Design and Engineering to shape the product, improve performance, and contribute to the technical direction of our RN platform. This role emphasizes quality, reliability, and scalable mobile experiences.

Qualifications

• 5+ years of software development experience, including 3+ years building mobile apps with React Native.
• Strong expertise with React, Expo, EAS, and TypeScript.
• Deep knowledge of iOS development, Apple Human Interface Guidelines, and app distribution via TestFlight.
• Proven experience with animations, performance optimization, and responsive mobile design.
• Experience integrating third-party identity providers (e.g., Google, Apple) and handling secure authentication flows.
• Proficiency with testing frameworks (Jest, Detox, Testing Library) and CI/CD workflows in agile environments.
• Familiarity with Git, backend API integration, and client-side data management strategies.

Responsibilities

• Build and evolve our mobile app: Develop, maintain, and optimize our React Native application using Expo, delivering high-quality features that support performance, scalability, and an exceptional user experience.
• Create engaging community experiences: Design and deliver features such as social feeds, bet sharing, chat, and other interactive experiences that encourage users to engage with the app and keep coming back.
• Collaborate across disciplines: Partner closely with Product, Design, and Engineering teams to transform ideas into intuitive, user-centric mobile experiences while contributing to technical discussions and architectural decisions.
• Champion app quality and reliability: Monitor application health using Crashlytics, proactively troubleshoot issues, and continuously improve app performance, stability, and release quality.
• Drive the growth of our mobile platform: Help establish React Native best practices, support other engineers as mobile development expands, and contribute to the technical direction of the app across squads.

Skills

React Native

React

Expo

EAS

TypeScript

iOS development

Apple Human Interface Guidelines

TestFlight

Animations

Performance optimization

CI/CD

Git

Backend API integration

Client-side data management

Tools

Swift

Android development

Google Play distribution

Geolocation

Deep linking

Offline data strategies

Job description

Legend Corp is seeking an experienced App Developer to join our small, highly collaborative mobile squad. You will build and evolve our React Native app using Expo, delivering features for social feeds, bet sharing, chat, and interactive experiences.

You’ll work with Product, Design and Engineering to shape the product, improve performance, and contribute to the technical direction of our RN platform. This role emphasizes quality, reliability, and scalable mobile experiences.