Mobile Engineer - React Native

CGI•St Louis, MO

14h•Hybrid

About The Position

Excellent opportunity to grow skills and autonomously own your work. From design to implementation, have a strong voice in how the client approaches mobile development and a very large real world impact. Work on meaningful products supporting agriculture, sustainability, and digital transformation. Collaborative and innovative engineering environment. Opportunity to shape mobile platform strategy, architecture, and engineering culture. Growth through technical leadership, mentorship, and complex product challenges. This role must be performed at our client site in St Louis, MO, however a hybrid working model is acceptable.

Requirements

10+ years of software engineering or mobile development experience.
5+ years of React Native, JavaScript, and TypeScript experience.
Strong knowledge of React Native architecture, hooks, navigation, rendering, native modules, and state management.
Strong mobile architecture experience, including modular design, reusable components, and scalable code organization.
Experience with performance tuning, debugging, profiling, memory optimization, and crash analysis.
Experience building offline first apps with local databases, secure storage, caching, sync, and background processing.
Experience integrating APIs, GraphQL, Firebase, analytics, crash reporting, and mobile SDKs.
Native Android experience with Kotlin/Java or native iOS experience with Swift/Objective C.
Knowledge of App Store and Play Store deployment, signing, certificates, provisioning, versioning, and rollouts.
Experience with CI/CD tools such as GitHub Actions, Azure DevOps, Fastlane, or Jenkins.
Strong understanding of mobile security, testing frameworks, observability, logging, and production monitoring.
Serve as a technical leader and trusted advisor for mobile initiatives.
Drive architecture consistency and engineering quality across teams.
Lead complex technical initiatives from discovery to production release.
Mentor engineers and promote strong engineering practices.
Partner with product and design teams to shape roadmap decisions.
Communicate technical concepts clearly to technical and non technical stakeholders.
Bachelor's degree in Computer Science, Engineering, IT, or equivalent practical experience.
Strong problem solving, debugging, decision making, and communication skills.
Ability to lead technical work and influence teams without formal authority.
Ownership mindset with a passion for building reliable, secure, user centered mobile applications.

Nice To Haves

Enterprise scale mobile app experience.
Experience in agriculture, sustainability, field operations, logistics, IoT, geospatial, or data driven domains.
Experience with maps, location services, geofencing, background tracking, camera, Bluetooth, sensors, or device hardware.
Knowledge of accessibility, design systems, monorepos, feature flags, A/B testing, and remote configuration.
Experience with Agile/Scrum teams and cloud platforms such as AWS, Azure, or Google Cloud.

Responsibilities

Build and maintain cross platform mobile apps using React Native, JavaScript, and TypeScript.
Lead mobile architecture for scalability, performance, reliability, security, and maintainability.
Define coding standards, reusable patterns, shared libraries, and engineering best practices.
Optimize app startup time, memory usage, rendering, network performance, bundle size, and offline behavior.
Integrate REST APIs, GraphQL, Firebase, analytics, crash reporting, push notifications, and third party SDKs.
Build offline first features, including local storage, caching, sync, background processing, and conflict resolution.
Develop native Android or iOS modules when required.
Collaborate with product, design, backend, QA, security, and business teams.
Drive decisions on state management, testing, CI/CD, release processes, and mobile tooling.
Lead app releases, App Store and Play Store readiness, phased rollouts, and production monitoring.
Troubleshoot complex production issues related to crashes, performance, authentication, sync, and devices.
Mentor engineers through code reviews, design reviews, documentation, and technical guidance.
Identify technical debt, platform risks, and opportunities for modernization.