Sr Software Engineer-macOS

Job Description Senior Software Engineer, Client Applications (macOS) Location: Riyadh, Saudi Arabia Role Overview Our client is seeking a highly skilled Senior Software Engineer, Client Applications (macOS) to join their team in Riyadh, Saudi Arabia.

This role will focus on the core sync and operating system integration layer of the client desktop application on macOS.

The primary emphasis is on system-level development in Swift, leveraging Apple’s File Provider framework and a strong understanding of macOS internals, filesystems, and OS integration.

The successful candidate will design and implement core sync and filesystem logic, integrate with Finder and macOS system services, and collaborate closely with QA, UI, and backend teams to deliver a robust desktop client experience.

This is a fully office-based role in Riyadh.

Key Responsibilities **Design, develop, and maintain system-level components for the desktop application on macOS using Swift 5.5 and above.** Work with Apple File Provider, File Provider domain management, and Endpoint Security / ESClient to handle filesystem events, placeholders, hydration/dehydration, and user actions. **Implement and maintain gRPC services and clients, along with JSON/REST-based APIs where required, to connect low-level system components with higher-level layers such as Electron / TypeScript UI and server-side services.** Contribute to Windows system components in modern C++ using the Windows Cloud Files API (CFAPI) where applicable. **Develop and maintain automated test coverage, including unit tests (gtest) and integration tests (Python + pytest).** Integrate with Finder for file badges, context menus, and other extensions using File Provider and PlugInKit. **Debug complex system-level issues using Xcode, LLDB, Instruments, and other macOS system tools.** Contribute to build and CI/CD pipelines, including Jenkins, Xcode build tools, Swift Package Manager, and shell scripting. **Collaborate effectively with UI, QA, Windows engineering, and backend teams to deliver stable, high-performance client applications.**

**Key Skills & Experience 1) Swift / macOS System Programming** Strong hands-on experience with Swift (Swift 5.5 and above) in a commercial environment. **Strong experience with async/await, actors, and structured concurrency.** Solid understanding of macOS internals, including: o processes o Grand Central Dispatch o concurrency primitives o synchronization o I/O o memory management o security entitlements **Hands-on experience with macOS / POSIX and Apple framework APIs, including: o Foundation o FileProvider o EndpointSecurity o XPC** Experience building multithreaded and asynchronous applications using Swift structured concurrency. 2) Filesystems, Sync & Networking **Strong understanding of filesystem behavior, including: o notifications o metadata handling o caching o locking o renames o symbolic links / junctions** Experience in or strong exposure to sync clients, backup applications, cloud storage, or related desktop platforms. **Familiarity with networked applications and protocols such as HTTP/HTTPS, TLS, and proxies from a development perspective. 3) APIs, Testing & Debugging** Experience working with RPC / typed APIs, such as gRPC, JSON/REST, or similar service communication frameworks. **Hands-on experience building automated tests, including: o unit tests in gtest o integration tests in Python + pytest** Strong debugging and troubleshooting capability on macOS using: o Xcode o LLDB o Instruments o Console.app o fs_usage o log stream 4) Collaboration & Work Style **Ability to work independently and take ownership of complex technical subsystems.** Comfortable collaborating with UI, QA, Windows/C++ engineers, and backend services teams. **Good communication skills in English and prior experience working in a globally distributed team.** Comfortable using AI-assisted coding tools such as GitHub Copilot, Cursor, Claude Code, or similar tools as part of the daily development workflow. Nice to Have **Experience with Apple File Provider or other virtual filesystem / sync APIs.** Experience building macOS installers, including PKG / DMG creation, notarization, hardened runtime, and Gatekeeper compliance. **Familiarity with Swift Package Manager (SPM) for dependency management.** Experience with XPC services for secure inter-process communication on macOS. **Familiarity with macOS sandboxing, entitlements, code signing, and Apple notarization pipelines.** Experience with Jenkins or similar CI systems. **Exposure to large language model APIs (e.g. OpenAI, Anthropic) or a general awareness of how AI-assisted tooling is influencing modern engineering workflows.** Scripting skills in shell scripting on macOS/Linux and/or basic PowerShell for cross platform CI tasks. **Background in cloud storage, sync clients, security/endpoint products, or distributed systems.** Strong awareness of security best practices when working at the OS and filesystem layer.

Candidate Profile We are looking for a technically strong macOS systems engineer who combines deep Swift/macOS expertise with strong ownership, debugging capability, and the ability to collaborate across a distributed product engineering environment.

Candidates who meet the majority of the core requirements, even if not every nice-to-have item, are encouraged to apply.

What Our Client Offers **Opportunity to work with a highly skilled engineering team building a world-class product** Structured learning, training, and development opportunities **Mentorship and support for ongoing technical and career growth** Competitive salary with annual bonus potential **Fully onsite role in Riyadh with flexible working hours outside company core collaboration windows** Paid annual leave and public holidays as per company policy **Additional employee benefits including birthday leave, volunteer day leave, and selected work-related reimbursements** Exposure to a global engineering environment and modern development practices Additional Information Please note that background security checks will be conducted for all successful candidates prior to joining.