Top Senior iOS Developer Jobs in NYC, NY

Develop and lead iOS software solutions using Swift, collaborate with engineering, UX/UI, quality, and product teams, and deliver high-quality mobile experiences. Participate in Agile ceremonies, advocate for mobile platforms, review code, resolve technical obstacles, improve engineering practices, and mentor junior and mid-level engineers. Own major platform components, engage across mobile and backend disciplines, and provide subject-matter-expert leadership for mobile development.

Design, architect, implement, and optimize high-performance iOS camera features (primarily Objective-C). Develop and launch stable mobile features, collaborate with Design, perform code reviews, and leverage AI tools responsibly to accelerate development while ensuring performance, security, and production quality.

Build and ship Swift-first iOS features that surface AI/LLM-driven conversational and context-aware experiences. Architect performant, privacy-conscious apps using modern concurrency, SwiftUI, networking (REST/WebSockets/streaming), offline storage, background tasks, and analytics-driven iteration. Collaborate with product, design, and backend teams and use AI-assisted development tools while maintaining high code quality and testing standards.

The Senior iOS Engineer will lead the iOS team, design and develop app features, ensure reliability, and collaborate across functions while navigating Apple ecosystem updates.

Lead development of secure, high-quality iOS applications using SwiftUI; design, implement, test, and maintain production code; drive team adoption of enterprise AI-assisted engineering, automation, and resilient CI/CD practices; mentor engineers; evaluate vendors and integrations to improve operational stability and security.

Lead development of iOS client solutions, partner with cross-functional teams, participate in Agile delivery, mentor engineers, own major mobile components, review code, advocate mobile best practices, and stay current with mobile technologies.

Lead design and delivery of iOS client solutions, collaborate with product, UX, QA and backend teams, participate in Agile ceremonies, mentor junior engineers, review code and enforce Swift best practices, own major components and platform needs, advocate mobile platform and improve cross-team processes.

Lead architecture, build, test, and scale Gusto's iOS app and mobile infrastructure. Improve build pipelines, automated testing, release processes, and foundational services (push, accessibility, localization). Collaborate across product, design, security, and infrastructure teams; prototype, iterate, and launch customer-focused features while mentoring engineers.

Design, build, and maintain high-quality iOS applications for patient care. Lead architectural efforts, improve app performance, and mentor teammates.

Lead design and delivery of iOS client solutions, collaborate with cross-functional teams, mentor engineers, review code, drive platform initiatives, and advocate mobile best practices while ensuring high-quality Agile delivery.

Founding iOS engineer to own end-to-end development of Harmonic's first iOS app: design and ship polished, AI-native mobile experiences, set architecture, testing and CI/CD, create reusable components, and mentor future mobile hires.

As a Senior iOS Engineer, you will lead feature development and architectural decisions for iOS/watchOS while mentoring other engineers and collaborating across teams to build high-quality consumer apps.

As a Staff iOS Engineer, you will lead mobile app architecture, collaborate with teams, improve development practices, mentor engineers, and stay updated with industry trends.

Design and develop the iOS app for Suno, focusing on performance and user experience. Mentor team members and set technical direction.

Own and architect Polymarket's iOS product, build real-time trading experiences that handle live market data and fast-moving prices, lead iOS engineering standards, collaborate with product/design/backend, and mentor mobile engineers to ship high-quality production releases.

Lead architecture and development of Credit Genie’s iOS apps using Swift (Swift 6). Implement UX from design mocks, collaborate with product/marketing/engineering, improve development practices, mentor engineers, contribute across the development lifecycle, and evaluate emerging technologies to scale the app.

The Senior iOS Engineer will develop and maintain iOS applications, build cross-platform apps using Flutter, and collaborate with teams to enhance productivity and performance for clients.

Design and build high-performance iOS trading interfaces handling real-time market data, complex order flows, and rich charting. Lead architecture, improve performance and observability, mentor engineers, collaborate with product/design/backend, and drive technical direction for pro-grade crypto trading on mobile.

Senior iOS Developer to design and build secure, high-performance iOS apps using Swift (SwiftUI/UIKit). Implement webview integrations (WKWebView/ASWeb), ASWebAuthenticationSession for OAuth/SSO, JavaScript interop, and native features (camera, push, maps). Ensure responsive web content handling and secure data management. Remote role but must be Bangalore-based with weekly (~1 hour) client office visit to collect a device.

As a Senior iOS Engineer at Hinge, you'll develop user-facing features, collaborate cross-functionally, and maintain app architecture, enhancing user experience and engagement.

Lead ownership of the iOS platform: build offline-first apps with local persistence and sync, real-time communication, media capture/uploads, location/scheduling, and polished, accessible UI/UX for multiple user roles.

Design, build, and maintain scalable, high-performance iOS applications using Swift. Deliver end-to-end features, integrate with back-end services, implement animations and Auto Layout, ensure test coverage and CI/CD, profile and optimize performance, and mentor team members.

The role involves designing, developing, and maintaining iOS applications, driving technical architecture, and promoting knowledge sharing within the team.

As a Senior iOS Software Engineer, you will develop and maintain native iOS applications using Swift, mentor junior engineers, and collaborate on software projects.

Lead development and improvement of a production iOS app used by tens of thousands. Own architecture, UI, networking, local persistence, and automated tests. Collaborate with Android and backend teams, diagnose async and device-specific issues, use Xcode Instruments, CI, and crash/analytics tooling, and drive product-minded technical decisions.