Senior Mobile Engineer (React Native)

FanFixApp, LLC; United States; Remote; USD 160,000 - 230,000; Full time

Benefits offered by this job

Base salary $160K-$230K

Employer-sponsored health insurance

401k

PTO / holidays

Parental leave

Job summary

Fanfix is seeking a Senior Mobile Engineer to design, build, and maintain scalable native mobile experiences for iOS and Android using React Native and Expo. You will collaborate with product, design, and backend teams to deliver fast, polished apps with robust tests and performance monitoring.

Ideal candidates have deep expertise in TypeScript, UI frameworks, and modern mobile tooling. This remote role reports to the Lead Application Engineer and thrives in a fast-moving startup environment.

Qualifications

• Extensive experience building cross-platform apps with React Native, including navigation, animations, and performance optimization.
• Proven Expo SDK, EAS Build/Submit/Update, and OTA delivery workflows.
• Familiar with TypeScript for clean, type-safe, and maintainable codebases.
• Familiarity with modern React Native UI frameworks such as NativeWind and shadcn/ui.
• Deep understanding of app startup time, bundle optimization, memory management, and frame-rate stability.
• Experience integrating GraphQL or REST APIs with React Query or Apollo Client.
• Knowledge of bridging native modules, managing platform-specific configurations, and integrating third-party SDKs.
• Proficient with Jest and React Native Testing Library; experience with Detox or Maestro.
• Attention to detail in UI, state management, and platform-specific behavior.
• Self-driven with ownership of features from conception to completion.

Responsibilities

• Design, build, and maintain native app features with high performance.
• Collaborate with product, design, and backend engineers to craft pixel-perfect experiences.
• Write robust unit and integration tests to ensure quality.
• Continuously improve app performance and startup time.
• Own key mobile features from ideation to release.
• Contribute to Fanfix mobile architecture and tooling.
• Mentor junior engineers to strengthen native expertise.

Skills

React Native

Expo & EAS

TypeScript

UI Frameworks

Mobile Performance

API Integration

Cross-Platform Dev

Testing

Attention to Detail

Initiative

Tools

TestFlight

Google Play Console

React Query

Apollo Client

Detox

Maestro

Sentry

Expo Application Services

Turborepo

Radix primitives

Job description

Company Overview

Fanfixis a premier content platform dedicated to empowering creators and fostering meaningful connections with their fans. We provide a safe, brand-friendly environment where creators can pursue their passions and monetize their work. With a global community of over 7 million fans, our platform enables engagement through features like direct messaging, memberships, tipping, and exclusive content.We’recommitted to continuous innovation, building high-performance web applications that elevate the creator and fan experience.

Role Overview

Asa Senior Mobile Engineer atFanfix,you’lldesign and develop scalable mobile applications using React Native and Expo. Working closely with product, design, and backend teams,you’lldeliver fast, reliable, and visually polished native experiences on iOS and Android. Withexpertisein TypeScript,NativeWind, and modern mobile UI frameworks,you’llensure code quality, maintainability, and scalability while improving app performance and mentoring other engineers. This role is suited for a proactive engineer who thrives in a fast-paced startup environment and is passionate about crafting smooth, high-quality mobile experiences.You’llreport to theLead Application Engineer.

*Remote Position

Requirements

• React Native:Extensive experience building cross-platform apps with React Native, including navigation, animations, and performance optimization.
• Expo & EAS:Proven experience with Expo SDK, EAS Build/Submit/Update, and OTA delivery workflows.
• TypeScript:Strong command of TypeScript for clean, type-safe, and maintainable codebases.
• UI Frameworks:Familiarity with modern React Native UI frameworks such asNativeWindandshadcn/ui.
• Mobile Performance:Deep understanding of app startup time, bundle optimization, memory management, and frame-rate stability.
• API Integration:Proven experience integratingGraphQLor REST APIs using tools such as React Query or Apollo Client.
• Cross-Platform Development:Knowledge of bridging native modules, managing platform-specific configurations, and integrating third-party SDKs.
• Testing:Proficient with Jest and React Native Testing Library, plus experience with end-to-end frameworks such as Detox or Maestro.
• Attention to Detail:Demonstratesprecision in UI execution, state management, and platform-specific behavior.
• Initiative:Self-driven, with the ability to take ownership of projects and deliver features from conception to completion.

Preferred Qualifications

• Design Systems:Experience contributing to ormaintaininga shared cross-platform design system (e.g.,shadcn/ui+NativeWind+ Radix primitives).
• App Distribution:Familiarity with TestFlight, Google Play Console, and automated release pipelines.
• CI/CD Experience:Understanding ofGitHub Actions, EAS Build pipelines, and remote caching inmonorepoenvironments.
• Feature Flags & Analytics: Experience integratingPostHog,LaunchDarkly, or similar tools for analytics and feature rollout.
• Observability:Familiarity with Sentry, Expo Application Services, or equivalent tools for monitoring app health and stability.
• MonorepoDevelopment:Comfortable working inTurborepowith shared packages, utilities, and backend adapters.
• Proactive Problem Solver:Anticipatesand resolves performance and UX challenges early. Technical Innovator: Passionate about adopting new mobile technologies and improving development velocity.
• Adaptability:Thrives in a fast-moving startup environment with evolving priorities and product goals.

Responsibilities

• Application Development:Design, build, andmaintainnative app features that deliver exceptional performance, scalability, and user experience.
• Collaboration:Partner with product managers, designers, and backend engineers to create intuitive, pixel-perfect mobile experiences.
• Testing & Quality:Write andmaintainrobust unit and integration tests to ensure code quality and stability.
• Performance Optimization:Continuously improve app performance, startup time, and responsiveness.
• Feature Ownership:Take ownership of key mobile features or modules from ideation to release.
• Architecture Contribution:Participatein technical planning and help shape the future ofFanfix’smobile architecture and tooling.
• Mentorship:Guide and support junior and mid-level engineers to strengthen the team’s nativeexpertise.

Benefits

• Compensation: Base salary ($160K - $230K) + Annual Bonus
• 100% Employer sponsored medical, dental and vision insurance, including all dependents!
• 401k
• Generous PTO / paid holidays
• Parental leave
• Fun working environment at a high growth tech startup!