Top Senior iOS Engineer Jobs in NYC, NY

As an iOS Engineer on the Buyer Growth team, you will lead growth initiatives, develop features for our iOS app, and collaborate with various teams to improve user acquisition and retention.

The Founding iOS Engineer will develop the next-generation iOS app for ResortPass. Responsibilities include owning the iOS app, crafting the architecture, collaborating with product and design teams, and establishing best practices. This role emphasizes high-quality user experience, app performance, and team leadership in mobile engineering.

As the lead iOS engineer, you'll own the mobile development lifecycle, collaborate with teams, build apps, and ensure secure data handling.

Design, implement, and optimize high-performance iOS features and apps using Objective-C and related technologies. Work with design teams, conduct code reviews, evaluate tradeoffs, leverage AI tools to accelerate development, and ensure performance, multithreading, and low-power optimizations for Snapchat's camera experiences.

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.

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.

Lead development and delivery of iOS client solutions, collaborate with cross-functional teams, mentor junior engineers, own major platform components, ensure code quality and adherence to Swift idioms, and engage in mobile developer communities.

Own and build Overtone's iOS app end-to-end: architecture, performance, release, and direction. Partner with product and design to ship real-time, voice-led, AI-driven experiences while setting iOS engineering standards, build and release discipline, and mobile strategy as the team scales.

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 the Medal iOS app, owning architecture and shipping features for real-time recording, clipping, feeds, discovery, and chat. Collaborate with designers and backend teams, run experiments, use analytics and user feedback, and maintain high code and UX quality for millions of users.

Lead design-first iOS development for a new collectibles marketplace: architect the app foundation, build high-fidelity animated interfaces, implement networking and real-time updates, ship fast experiments, improve performance and reliability, and set engineering standards while partnering with product and design.

As a Senior iOS Engineer, you will lead the iOS development, establish the architecture, collaborate with stakeholders, and implement high standards in software design and performance.

As a Lead Mobile Developer, you will design and maintain iOS apps, mentor developers, optimize performance, and integrate with backend services while collaborating with cross-functional teams.

Build and ship iOS product features from idea to release using Swift and SwiftUI. Own user-facing experiences (discovery, purchase, opening, collection, wallet, redemption). Collaborate with founders, design, and backend. Use AI-assisted tools to accelerate development, test thoroughly, and maintain high quality.

Build and lead the development of Sesame's iOS companion app while collaborating with engineering, design, and product teams to enhance user experience.

Design, build, test, and maintain iOS applications using Swift (Objective-C a plus). Collaborate with designers, product and backend teams, integrate RESTful APIs, perform unit testing and debugging, participate in code reviews and Agile ceremonies, and support App Store deployment.

Build and scale fan-facing iOS features using Swift and SwiftUI. Collaborate with product, design, and data across international teams, use AI tools to accelerate development, participate in A/B testing and analytics, and maintain high standards for performance, accessibility, and code quality.

The iOS Engineer will design, implement, and test innovative iOS applications while collaborating with clients and staying updated on tech trends.

The iOS Engineer will build foundational Swift frameworks, enhance app performance and reliability, develop internal tooling, and collaborate with product engineering teams.

Build and maintain iOS and tvOS features using Swift and UIKit. Collaborate with Product, Design, Backend, and QA to translate requirements, write clean tested code, investigate bugs and performance, participate in Agile ceremonies, and contribute to documentation and onboarding.

Lead development of native iOS features (food tracking, activity logging, weight trends, AI-driven insights), deliver premium UI/UX with modern Apple frameworks, own flagship initiatives (Lock Screen Widgets, Live Activities, health data integrations), shape app architecture and standards, and collaborate cross-functionally while mentoring engineers.

Lead development of Rogo's native iOS app, implementing features using Swift and SwiftUI, while establishing mobile practices and collaborating with teams.

Join a small team to develop innovative iOS applications focusing on AI, optimize performance, and enhance user experience. Expertise in Swift required.

Build and ship native iOS features for onboarding, accounts, cards, payments, transfers, rewards and AI-assisted journeys. Improve performance, reliability and UX; integrate APIs and authentication; collaborate with product, design, backend and AI teams; own app quality and production issue debugging.