Mobile Engineer (Fintech)

TL;DR

Mobile Engineer (iOS, Fintech): Designing and implementing a full-featured mobile trading platform with an accent on real-time data processing, complex order types, and sophisticated gesture-driven UIs. Focus on maintaining system performance during high market volatility, secure wallet integration, and robust client-side state management.

Location: On-site in New York, USA. Must be authorized to work in the United States.

Salary: $185,000–$300,000

Company

Our client is developing a next-generation mobile trading platform designed to redefine the future of finance.

What you will do

• Design and implement highly responsive iOS app features for real-time data processing and market volatility.
• Build gesture-driven mobile UIs for professional trading on smaller screens.
• Develop high-performance, interactive charting tools and real-time data visualizations.
• Integrate native mobile wallets and biometric authentication with secure key management.
• Integrate complex REST APIs and WebSocket streams while managing client-side cached states.
• Configure and maintain CI/CD pipelines for automated builds, previews, and testing.

Requirements

• 3+ years of experience shipping iOS applications using Swift, preferably in fintech, trading, or real-time data environments.
• Strong eye for UI/UX with the ability to wireframe, prototype, and make informed design decisions.
• Proven track record of shipping apps through the Apple App Store, with a deep understanding of the full release cycle.
• Deep knowledge of iOS performance characteristics, memory management, and background processing.
• Experience building applications that handle live data streams, including managing WebSocket connections, reconnection logic, and UI responsiveness.
• Must be authorized to work in the United States.

Culture & Benefits

• Competitive base salary plus an equity stake in the organization.
• Comprehensive medical, dental, and vision insurance with HSA options.
• 401(k) or equivalent retirement plan with an employer match.
• Generous paid vacation and holiday policy.
• A flat, engineering-driven environment where technical excellence and innovative ideas are prioritized.
• Preference for working in a high-intensity, in-person engineering environment.

Hiring process

• Initial Interview with the Founder / CEO.
• A take-home technical test.
• A comprehensive technical interview and an onsite coding session.
• A final interview with the leadership team to confirm alignment.