Top Senior iOS Engineer Jobs in NYC, NY

Own and enhance the native iOS application by building polished, performant features; architect scalable and maintainable code; write unit and functional tests; debug production issues; collaborate with Design and Product; contribute to product decisions; refactor code; and improve engineering processes. The role requires strong native iOS and Swift experience, with GraphQL, SwiftUI, and Combine preferred.

Develop and maintain native iOS applications using Swift, focusing on performance, scalability, usability, and robust architecture. Partner with product, design, and engineering teams on planning and delivery; troubleshoot complex issues; write tests; maintain CI/CD workflows; and improve code quality. The role includes technical leadership, mentoring junior engineers, documentation, code reviews, and staying current with iOS technologies and development practices.

Develop and maintain native iOS, tvOS, and visionOS applications for ABC News across Apple devices. Build high-quality, performant features, integrate backend and third-party services, resolve production issues, and guide full application lifecycles. Lead feature ownership, improve team processes, mentor engineers, conduct code reviews, collaborate with stakeholders, and promote sustainable architecture and continuous learning.

Develop native iOS, tvOS, and visionOS applications for ABC News products used by millions. Build tested, performant features; integrate backend systems and services; resolve production issues; guide agile development; own feature delivery; and mentor engineers through code reviews and pair programming. Collaborate with technical and non-technical stakeholders to create sustainable solutions and improve team processes.

Design, build, and maintain high-performance native iOS applications using Swift and SwiftUI/UIKit. Collaborate with product, design, and backend teams to implement features, write clean MVVM-based code, test and debug, integrate RESTful APIs, and optimize app performance for a flagship wealth-management mobile platform.

Lead hands-on development of user-facing Android and iOS applications, taking ownership from design through production release. Build maintainable, well-tested features, optimize performance, debug unfamiliar systems, and manage app-store publishing. Collaborate with product, design, backend, and users in an agile, remote environment. Use AI coding agents responsibly to accelerate implementation, testing, reviews, infrastructure work, and incident investigation.

Build, test, release, and maintain native Android and iOS applications across a portfolio of consumer mobile products. Use Kotlin, Swift, modern mobile frameworks, automated testing, analytics, experimentation, and AI coding agents to deliver high-quality software. Collaborate with product, design, marketing, operations, and engineering teams, measure user impact, manage app-store releases, and adapt across codebases and product pods.

Design and build native iOS features for investment and cash accounts, write automated tests, integrate with design systems and backend APIs, own projects end-to-end, collaborate with cross-functional teams, mentor peers, and support production iOS app and CI through on-call rotations.

Join a fintech company as an iOS Engineer to enhance mobile products, collaborating cross-functionally and driving impactful features from design to launch.

As a Mobile iOS Developer Intern, you will develop and maintain the iOS app using AI-driven tools. Responsibilities include feature implementation, collaborating with teams, writing effective prompts, and enhancing user interfaces with AI.

Own Android and iOS mobile development for a large consumer VPN product. Inherit and modernize existing codebases, integrate native VPN networking libraries, improve security, testing, CI/CD, release management, and app-store compliance. Collaborate with product, design, backend, DevOps, and marketing teams to deliver reliable user-facing features. Diagnose networking issues across mobile and Go components, optimize connection performance, and use AI coding agents responsibly.

Integrate secure identity and authentication capabilities into native iOS and Android applications supporting a Federal DoD ICAM platform. Responsibilities include implementing Okta SDKs, OAuth/OIDC, PKCE, FIDO2/WebAuthn, passkeys, CAC/PIV credentials, biometric authentication, secure token storage, enrollment and recovery workflows, and mobile security controls. The role also supports NIST compliance, Zero Trust principles, CI/CD, troubleshooting, and collaboration with Federal cybersecurity and mobile engineering teams.

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.

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 design and implementation of privacy-first iOS apps, build and iterate Cloaked Pay screens, own mobile payments, ship UI-heavy SwiftUI features, integrate REST/GraphQL APIs, use Core Data/offline storage, develop iOS and Safari extensions, enforce architecture and testing best practices, mentor engineers, and collaborate across design, backend, and product.

As an iOS Engineer at Geo, you will develop user interfaces, own the app architecture, and write high-performance code.

Design, build, test, and maintain iOS applications using Swift and Objective-C. Collaborate with cross-functional teams, fix bugs, optimize performance, and evaluate new technologies to improve development efficiency.

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.

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 an iOS Engineer at Ramp, you'll develop and enhance the mobile app, establish engineering standards, and collaborate with cross-functional teams.

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

As a Senior iOS Engineer, you will develop features for Duolingo's short-form lessons, collaborate on software projects, mentor junior engineers, and optimize applications. Responsibilities include building iOS apps in Swift and enhancing user engagement in educational content.

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.