Mobile App Engineer
We're a fast-moving team committed to tackling complex challenges and delivering impactful technology in the Crypto ecosystem. We prioritize shipping results over endless theorizing and stay relentlessly focused on delivering real user value. We are hiring exclusively for in-person, full-time, in NYC.
About Fullstack
Open Positions Frontend Engineer Join our Product & Platform team to build and maintain the applications that power our services, collaborating with designers, backend engineers, and product managers to deliver responsive, high-performance user interfaces. NYC, NY Full-time 3+ years experience $185-300k + Equity Blockchain Engineer Join our Infrastructure & Platform team to architect and deploy highly reliable, scalable blockchain services with lightning-fast performance. You'll lead the development of mission-critical core infrastructure that powers our products. NYC, NY Full-time 2+ years experience $200-400k + Equity Software Engineer Join our Infrastructure & Platform team to shape scalable high performance systems and services. You will design and operate core components such as compute, storage and networking while working closely with the product team to deliver exceptional user experiences. NYC, NY Full-time 3+ years experience $185-400k + Equity
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will design and implement high-performance iOS features for a full-featured mobile trading app. You will build gesture-driven trading interfaces and interactive charts, integrate native wallet support and biometric authentication, manage transaction signing and on-device key security, and integrate REST APIs and WebSocket streams while maintaining client-side cached state. You will also configure CI/CD pipelines, ensure quality through automated testing, and optimize the app to remain responsive under volatile market conditions.
Requirements
- 3+ years shipping iOS applications in Swift
- Experience with App Store release processes and provisioning
- Deep understanding of iOS performance characteristics, memory management, and background processing
- Experience building real-time systems and managing WebSocket connections and reconnection strategies
- Strong UI/UX design sensibility, wireframing, and prototyping experience
- Ability to make architectural decisions and lead feature development
- Comfortable collaborating in high-bandwidth in-person engineering environments
- Authorized to work in the United States
Responsibilities
- Design responsive iOS features that handle real-time market data
- Build gesture-driven trading interfaces with high information density
- Develop high-performance interactive charts and data visualizations
- Integrate native mobile wallet support and biometric authentication
- Implement secure on-device transaction signing and key management
- Integrate REST APIs and WebSocket streams and manage cached client state
- Configure and maintain CI/CD pipelines, automated builds, previews, and testing
Benefits
- Comprehensive medical, dental, and vision insurance with HSA options
- Generous paid vacation and holidays
- Retirement plan with employer match
