Oxbow Talent
Senior macOS Systems Engineer
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Senior macOS Systems Engineer
Senior macOS Systems Engineer
Location: Europe only (must have right to work)
This role does not offer sponsorship.
About the Role
Most macOS roles focus on application development. This is not one of them.
This is a senior engineering position for someone with hands-on experience working closely with the macOS operating system. You will design and maintain complex desktop software where reliability, security, and performance are absolute priorities.
The company is an established software business with a global customer base. Their fully remote engineering culture supports an impactful product used in demanding enterprise environments, where the macOS client plays a critical role in daily user interactions.
Key Focus Areas
You will drive core macOS client engineering, specialising in:
- File synchronisation
- Operating system integration
- System-level behaviour
Work primarily in Swift, operating well below the UI layer. The role involves:
- Designing and maintaining components that interact with the OS
- Managing file system state, handling background processes
- Ensuring secure communication between services
- Guaranteeing a reliable desktop experience at scale
This is ideal if you thrive on challenging debugging, have deep knowledge of macOS beyond surface-level development, and want long-term ownership of complex engineering problems.
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Why This Role Stands Out
Most Swift roles revolve around UI development. This is significantly deeper:
- Master concurrency, filesystem behaviour, OS-level permissions, and secure inter-process communication
- Engage in performance debugging, production-grade desktop engineering
- Achieve meaningful technical autonomy in a remote-first culture
- Collaborate effectively with cross-functional teams (platform, backend, Q&A, product)
Benefits include:
- Fully remote position across Europe
- Strong package, annual bonus, professional training support
- Full reimbursement for work equipment and operational home costs
Core Responsibilities
- Design, building and maintaining system-level components for a macOS desktop client
- Work primarily in modern Swift, integrating async/await and structured concurrency
- Develop features interacting with:
- Macintosh filesystem and file state
- Background processes
- Desktop integrations
- Maintain solutions for secure component communication between:
- Backend services,
- UI layers, and
- Other system-level components
- Employ tools to debug complex macOS issues, leveraging:
- Xcode, LLDB, Instruments, or equivalent tools
- Expand automated test coverage across:
- Unit tests
- Integration scenarios
- Production-like environments
- Contribute to workflows for:
- Building, packaging, and CI/CD optimisation
- Collaborate closely with:
- Teams in Q&A, backend, UI, and cross-platform engineering
- Integrate modern AI coding tools into development workflows
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Required Experience & Skills
- Strong commercial-level expertise in Swift
- Deep understanding of:
- macOS internals (processes, concurrency, I/O, memory management, permissions)
- macOS system APIs and lower-level desktop application architecture
- Proven expertise in:
- Filesystem behaviour (notifications, metadata, locking, renames, caching, edge cases)
- Experience with typed API or RPC-style communication
- Specialist debugging skills for macOS (tools like Xcode, LLDB, Instruments)
- Ability to operate independently in a fully remote engineering team
- Fluent written/spoken English for collaborative communication
Salary: Up to 90,000 € (depending on experience)
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