Senior Mobile Engineer

🔥 12 hours ago

🇺🇸 United States – Remote

💵 $155k - $200k / year

⏰ Full Time

🟠 Senior

🖥 Software Engineer

👻 Ghost score 0%

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Topstep

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2012

💸 Finance

💳 Fintech

🤝 B2B

Finance • Fintech • B2B

Topstep is a company that provides a platform for futures traders to develop their skills and potentially earn funding through their unique Trading Combine program. The program allows traders to demonstrate their abilities in a simulated trading environment, and those who meet the criteria can unlock a funded trading account within a short period. With over 10,000 traders and support features like coaching, community engagement, and educational resources, Topstep aims to help individuals become successful traders while minimizing their financial risk.

📋 Description

• Help build out Topstep's mobile MVP in React Native and TypeScript, integrating with GraphQL APIs across trader and trading experiences • Establish mobile architecture patterns, reusable components, and engineering practices • Own mobile features end-to-end from technical design through App Store and Play Store releases, monitoring, and iteration • Partner with product and design to translate trader needs into intuitive, accessible experiences • Design for high volumes of real-time updates while keeping screens responsive and information current across devices and network conditions • Build quality through testing, monitoring, performance optimization, and secure handling of trader information • Bring mobile expertise into cross-functional feature teams • Mentor engineers through reviews and pairing • Champion mobile-first thinking across the organization • Support the mobile experience in production, investigate issues, improve reliability, and participate in agreed support or on-call responsibilities after onboarding

🎯 Requirements

• 5+ years of professional experience building and shipping production mobile applications, including several years of hands-on React Native development • Deep React Native expertise and strong TypeScript and modern JavaScript foundation, including navigation, state management, hooks, and component design • Experience shipping applications to both iOS and Android, including platform-specific differences, mobile build and release pipelines, and app-store distribution • Experience integrating GraphQL APIs, including client caching, mutations, and error handling • Experience improving mobile performance and reliability through profiling, secure session handling, and debugging production issues • Practical experience writing unit, integration, and end-to-end tests for mobile applications • Track record of owning features end-to-end and helping other engineers through technical decisions, code reviews, reusable components, and mentoring • Clear communication and pragmatic engineering judgment, including explaining mobile constraints, building consensus, and balancing long-term architecture with MVP delivery • Preferred: Experience with real-time data integration using WebSockets or similar streaming connections • Preferred: Native iOS or Android development, including work at the React Native/native boundary • Preferred: Experience with complex mobile interfaces such as charts, animations, or gesture handling • Preferred: Familiarity with Expo or comparable React Native tooling • Preferred: Experience building trading, financial, or fintech products

🏖️ Benefits

• Seven Company-paid Holidays • Generous Family Leave • Paid time off is front-loaded • Competitive 401(k) matching • Health, dental, and vision insurance for full-time employees • Bonus for taking 5 consecutive vacation days • Food and groceries budget • Contributions towards health and wellness • Performance-based bonus

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