Mobile App Developer Jobs (NOW HIRING)

Location: New York (Office)

On-site | Full-time

Compensation: $185K - $300K

Our client is developing a next-generation mobile trading platform designed to redefine the future of finance. Unlike simplified retail applications, this platform offers a full-featured trading experience, including live market data, complex order types, and multi-venue execution.

The Mobile Engineer will be responsible for bringing the power of professional trading terminals to a mobile form factor. The role involves tackling sophisticated engineering challenges, such as maintaining synchronized real-time price feeds and ensuring system performance remains stable during periods of high market volatility. This position is ideal for a developer who excels in high-bandwidth, in-person collaborative environments and is passionate about building ambitious systems from the ground up.

Key Responsibilities

• iOS App Development: Design and implement features that remain highly responsive during market volatility and process real-time data with maximum efficiency.
• Trading Interface Design: Build gesture-driven mobile UIs that maintain the information density of professional terminals on smaller screens while preserving full functionality for power users.
• Data Visualization: Develop high-performance, interactive charting tools and real-time visualizations to assist users in making informed, data-driven trading decisions.
• Wallet & Security Integration: Implement native integrations with mobile wallets and biometric authentication, managing on-device transaction signing and secure key management.
• System Architecture: Integrate complex REST APIs and WebSocket streams while managing robust client-side cached states to ensure data integrity.
• DevOps & Quality Assurance: Configure and maintain CI/CD pipelines for automated builds, previews, and testing to ensure seamless production rollouts and rollbacks.

Interview Process

1. Initial Interview: Discussion with the Founder / CEO.
2. Assessment: A take-home technical test.
3. Technical Evaluation: A comprehensive technical interview and an onsite coding session.
4. Final Review: A final interview with the leadership team to confirm alignment.

Requirements

• Production iOS Experience: 3+ years of experience shipping iOS applications using Swift, with a strong preference for backgrounds in fintech, trading, or real-time data environments.
• Design Sensibility: A strong eye for UI/UX with the ability to wireframe, prototype, and make informed design decisions regarding information hierarchy and gesture-driven interfaces.
• App Store Proficiency: Proven track record of shipping apps through the Apple App Store, with a deep understanding of the full release cycle from provisioning to production.
• Platform Expertise: Deep knowledge of iOS performance characteristics, memory management, and background processing.
• Real-Time Systems: Experience building applications that handle live data streams, including managing WebSocket connections, reconnection logic, and UI responsiveness.

Core Attributes

• Ownership Mindset: Comfortable taking the lead on architectural decisions and driving feature development from ideation to launch.
• In-Person Collaboration: A preference for working in a high-intensity, in-person engineering environment.
• Work Authorization: Must be authorized to work in the United States.

Benefits

• Competitive Compensation: Top-tier base salary plus an equity stake in the organization.
• Health & Wellness: Comprehensive medical, dental, and vision insurance with HSA options.
• Retirement: 401(k) or equivalent retirement plan with an employer match.
• Time Off: Generous paid vacation and holiday policy.
• Culture: A flat, engineering-driven environment where technical excellence and innovative ideas are prioritized.

Due to the high volume of applications we anticipate, we regret that we are unable to provide individual feedback to all candidates. If you do not hear back from us within 4 weeks of your application, please assume that you have not been successful on this occasion. We genuinely appreciate your interest and wish you the best in your job search.

Commitment to Equality and Accessibility:

At MLabs, we are committed to offer equal opportunities to all candidates. We ensure no discrimination, accessible job adverts, and providing information in accessible formats. Our goal is to foster a diverse, inclusive workplace with equal opportunities for all. If you need any reasonable adjustments during any part of the hiring process or you would like to see the job-advert in an accessible format please let us know at the earliest opportunity by emailing human-resources@mlabs.city.

MLabs Ltd collects and processes the personal information you provide such as your contact details, work history, resume, and other relevant data for recruitment purposes only. This information is managed securely in accordance with MLabs Ltd's Privacy Policy and Information Security Policy, and in compliance with applicable data protection laws. Your data may be shared only with clients and trusted partners where necessary for recruitment purposes. You may request the deletion of your data or withdraw your consent at any time by contacting legal@mlabs.city.