Top iOS Developer Jobs in Cincinnati, OH

Reverse engineer, debug, develop, and test virtual iOS devices on a proprietary hypervisor. Port new iOS versions, build virtual peripherals/drivers, optimize performance and reliability, create automated test infrastructure, collaborate with hardware modeling, QA, and product teams, and produce internal technical documentation.

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.

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.

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.

Design and build e-commerce iOS applications, integrate with back-end services, ensure performance and responsiveness, collaborate to define and ship features, identify and fix bugs and bottlenecks, maintain code quality and automation, and lead and mentor junior developers.

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.

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

Founding iOS Engineer to build the app's core intelligence layer. Must implement production CallKit and on-device continuous Speech Framework recognition, integrate with SwiftUI/CoreData, and optionally add Dynamic Island Live Activity via WidgetKit. Equity-only founding role; product details under NDA.