Join us. Rethink IT.

Responsibilities (What he/she will do after join UI):

• Design and build the core synchronization and metadata handling logic for UniFi Drive on macOS, enabling reliable and intuitive access to files across local and cloud environments.
• Build platform-integrated file experiences by working with macOS system behaviors and APIs, with a focus on correctness, performance, and meeting native user expectations.
• Tackle non-trivial system problems that arise in real-world usage, such as handling change, coordination, and edge cases across devices and environments.
• Collaborate closely with backend and infrastructure teams to align on data models, APIs, and end-to-end reliability.
• Work with product and design partners to translate user workflows into robust technical solutions, balancing system constraints with user experience.
• Continuously improve performance, stability, and maintainability through measurement, profiling, and iterative refinement.

Minimum Qualifications (MUST-haves) :

• 3+ years of professional software development experience, or equivalent experience, building and shipping production systems.
• Hands-on development experience on Apple platforms (macOS and/or iOS), with familiarity with the Apple development ecosystem and real-world production workflows.
• Strong computer science fundamentals, with the ability to reason clearly about complex system behavior and trade-offs.
• Ability to build clear mental models, decompose ambiguous problems, and make thoughtful engineering decisions rather than relying solely on predefined patterns or recipes.
• Solid programming skills in Swift or Objective-C, with attention to correctness, readability, and long-term maintainability.
• Proficient with Git and modern development workflows, including code review, incremental delivery, and collaboration within a team.
• Comfortable navigating uncertainty, asking good questions, and working effectively in a fast-evolving platform environment.

Preferred Qualifications (Nice-to-haves / Plus) :

• Familiarity with macOS platform concepts such as file I/O, processes, concurrency, and memory management.
• Experience working with networked or asynchronous systems, including REST APIs, WebSocket, WebRTC, or similar mechanisms.
• Experience designing or implementing synchronization logic or data coordination workflows.
• Background in storage, backup, or data-heavy systems, including NAS or hybrid local–cloud environments.
• Experience optimizing performance, memory usage, or I/O-heavy workflows, or debugging subtle issues in production systems.