Top Senior iOS Engineer Jobs in NYC, NY

Design, build, and maintain test automation frameworks, CI/CD infrastructure, build systems, and reporting tools for flagship streaming mobile apps. Collaborate with engineering teams to implement full-stack quality solutions, document and train users on automation tooling, investigate framework/environment issues, and contribute to platform and quality engineering initiatives.

As a Senior iOS Engineer, you will enhance the rider mobile app, manage infrastructure services, and resolve critical production issues.

Build and maintain Compass iOS applications by designing, scoping, and implementing features with Swift and modern iOS practices. Collaborate with product, design, and engineers, perform code reviews, write tests, and produce clear documentation and runbooks. Contribute engineering-led initiatives to improve platform speed, quality, and operational excellence.

The Senior iOS Engineer will architect and develop connectivity features for the Oura iOS app, collaborating with firmware teams and ensuring high code quality.

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.

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.

Design, build, and maintain Branch's iOS apps by implementing robust architectures and complex UIs. Improve engineering standards, tools, and CI/CD pipelines, manage project priorities and deadlines, and collaborate with product, design, and cross-functional teams to deliver scalable mobile features.

Lead iOS development for Thunderbird: design and improve mobile architecture, optimize performance and security, debug and test across unit/integration/automation, review and document technical decisions, own projects end-to-end, and collaborate with product, UX, and open-source contributors to deliver a scalable, accessible, and maintainable iOS app.

Lead design and development of Thunderbird's iOS app, improving architecture, performance, reliability, security, and accessibility. Own projects end-to-end, debug and test at unit/integration/automated levels, review code, mentor contributors, and document technical decisions while collaborating with product, UX, and open-source community.

Lead design and implement deep mobile platform integrations (primarily iOS) across the Graykey product. Debug across layers (Python, native C/C++, OS userspace and kernel), analyze crash dumps and disassembled binaries, drive features from design through production, mentor engineers, and collaborate with firmware and product teams to ensure reliable multi‑device, multi‑OS operation.

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.

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

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

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.

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 lead product decisions, ship code for the iOS app, and enhance the app's architecture, ensuring a user-centric experience.

Lead iOS test strategy and execution for large implementations. Create test plans, perform functional/regression/performance testing, build and maintain automated tests (XCTest/XCUITest/Appium), run compatibility and performance assessments, triage defects with developers, and maintain test documentation and metrics.

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.

The Senior iOS Engineer will drive key engineering decisions, enhance the iOS app, and engage in product strategy discussions. Responsibilities include shipping production code and maintaining app architecture.

As a Senior iOS SDK Engineer, you'll design, implement, and optimize core SDK features, maintain integrations with ad networks, and improve SDK usability by collaborating with publishers and product teams.

Design, build, and maintain high-quality iOS apps. Collaborate with PMs and designers, mentor engineers, and manage code ownership.

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 design, build, and launch new features for Ramp's iOS app. Own roadmap prioritization, code quality, reviews, and mentor engineers while partnering with Product and Design to iterate from feedback to production.

Own and ship the mobile app end-to-end: design architecture, implement native iOS/Android features (push, background tasks), integrate anti-smishing and verification-code protections, manage builds/releases and crash reporting, and collaborate with product, design, and security teams.

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.