Top iOS Developer Jobs in San Diego, CA

Lead design and implementation of Neighborhoods mobile experiences across Cash App and Square. Shape cross-team architecture, stay hands-on with iOS development (SwiftUI, Workflow), drive integrations for discovery, ordering, loyalty, and fulfillment, mentor engineers, and apply AI-assisted workflows to accelerate development and quality.

Lead technical direction and architecture for Neighborhoods mobile across Cash App and Square. Drive cross-organizational integration, remain hands-on in iOS development (SwiftUI, Workflow), apply AI-native engineering practices, mentor engineers, and collaborate with backend, web, Android, product, and design partners to deliver reliable, scalable mobile experiences.

Lead cross-team iOS engineering for Neighborhoods across Cash App and Square: define architecture, stay hands-on with SwiftUI/Workflow codebases, deliver integrated loyalty/ordering features, mentor engineers, and adopt AI-native workflows to accelerate development and quality.

Lead technical direction and architecture for Neighborhoods mobile experiences across Cash App and Square. Drive cross-organizational mobile initiatives, stay hands-on in iOS development, partner with backend/web/Android teams, mentor engineers, and apply AI-assisted workflows to accelerate feature development and quality.

Develop and maintain high-quality iOS applications and shared mobile components. Design reusable UI components and frameworks, collaborate with designers and cross-functional teams, ensure accessibility and performance, write unit and automated tests, perform code reviews, mentor engineers, and contribute to CI and modern development workflows.

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.

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.

Lead development and commercialization of intradermal biosensor software, authoring tested mobile/server/GUI code and SDKs, ensuring regulatory quality-system compliance, mentoring engineers, estimating capacity, and maintaining production services.

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.

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.

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.

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.

Work directly with the founder to implement and ship native iOS features in Swift, manage EAS builds and App Store submissions, and coordinate cross-platform work with the React Native/TypeScript codebase. Open PRs for every change, provide weekly written updates, and participate in biweekly syncs. Part-time (up to 10 hrs/week) contract role focused on delivering scoped tasks and clear communication.

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.

The Associate AWS Developer will implement features in full-stack applications, collaborate with teams, write clean code, and learn cloud development.

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

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.

Develop and maintain iOS applications using Swift and SwiftUI with AI features, optimize performance, and collaborate with backend and ML engineers.