Mobile Engineer - React Native

About the role

This role is based at our client site in St Louis, MO, but a hybrid working model is acceptable.

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.

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.

Qualifications

• 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.

Skills

• 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.

Benefits

Competitive compensation
Comprehensive insurance options
Matching contributions through the 401(k) plan and the share purchase plan
Paid time off for vacation, holidays, and sick time
Paid parental leave
Learning opportunities and tuition assistance
Wellness and Well being programs

Pay

A reasonable estimate of the current range for this role in the U.S. is $89,600.00 - $176,300.00.

Schedule

The role must be performed at the client site in St Louis, MO, but a hybrid working model is acceptable.