Top iOS Developer Jobs in Washington, DC

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.

Develop and maintain robust, accessible, and performant native iOS applications using modern Swift technologies and architectures. Collaborate with product, architecture, UX, and platform teams to define roadmaps, engineering standards, tooling, and design patterns. Build product features and UI infrastructure, write automated tests, modernize codebases, support App Store releases, and contribute through code reviews, mentoring, pair programming, and mobile engineering expertise.

Build and ship native iOS features in Swift, manage EAS builds and App Store submissions, and contribute to React Native and TypeScript code when needed. Work within Supabase and related backend systems, submit reviewed GitHub pull requests, debug test-user feedback, identify launch requirements, and communicate progress and blockers independently. This is project-based, part-time work reporting directly to the founder.

Build and maintain production-grade iOS applications using Swift and SwiftUI, integrating AI features through backend APIs. Design reliable AI interaction patterns, optimize performance, memory, battery, and latency, and support monitoring, feedback capture, and root-cause analysis. Collaborate with backend and ML engineers on API behavior, reliability, and user trust while shipping stable App Store experiences.

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 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.

Build and maintain performant, accessible consumer-facing experiences for Netflix’s iOS app using Swift and GraphQL. Collaborate with product managers, designers, and engineers to scope projects, refine interfaces, develop shared infrastructure, and make architectural trade-offs. Teams may focus on client foundations, server-driven UI, advertising frameworks, or ad insertion. Responsibilities include writing robust maintainable code, automation, documentation, and supporting high-quality, scalable mobile experiences.

Develop and ship production-quality mobile apps using React Native and native iOS/Android technologies. Write performant, maintainable code, participate in design discussions, support prototyping and internal testing, and test/debug across multiple mobile devices.

Develop high-quality, performant, accessible consumer-facing experiences for Netflix’s iOS app using Swift and GraphQL. Responsibilities include building maintainable code, automation, documentation, server-driven UI infrastructure, and ad experiences. Collaborate with product managers, designers, and engineering teams to scope projects, refine interfaces, design scalable solutions, and balance business, product, and architectural trade-offs.

Lead quality strategy and testing for the iOS Games SDK. Design and implement automated tests, build supporting tools and infrastructure, debug SDK issues, perform manual testing for hard-to-automate features, create test games and samples, and analyze operational data to improve test stability and developer experience.

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

Build and maintain high-performance iOS mobile applications using React Native. Collaborate with designers, product, and backend teams to implement features, integrate RESTful APIs, optimize performance, debug issues, write clean code, participate in code reviews, and keep up with mobile development best practices.

Lead ownership of the iOS platform: build offline-first apps with local persistence and sync, real-time communication, media capture/uploads, location/scheduling, and polished, accessible UI/UX for multiple user roles.

Lead design and development of high-performance, offline-capable iOS (iPad) and Android apps for mission-critical drone operations. Build real-time maps, video streaming, telemetry overlays; integrate with hardware; optimize battery, memory, and latency; implement offline-first sync; collaborate with backend/hardware teams; mentor engineers and establish CI/CD, testing, and security best practices.

The Core iOS Senior Engineer will lead mobile development projects, troubleshoot issues, and contribute to code reviews, requiring strong experience in Objective-C and mobile software development.

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.

Develop and maintain iOS applications, ensuring compliance, code reviews, and collaboration with teams while optimizing performance and security.

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.

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.