Senior MacOS QA Engineer

• 5+ years of QA experience with macOS applications, focusing on security, system level, or compatibility testing
• Strong understanding of macOS internals, including System Extensions, Endpoint Security, XPC, TCC, SIP, Launch Services, and file systems
• Familiarity with macOS diagnostic and monitoring tools such as Console, Activity Monitor, Instruments, fs_usage, dtrace, tcpdump, and lldb
• Experience testing low level products such as VPNs, endpoint security tools, or antivirus software
• Ability to read crash reports and debug logs and identify root causes
• Ability to work independently and investigate issues thoroughly before escalating
• Excellent written communication for clear test case documentation and bug reports

• Test macOS security features spanning system extensions, Endpoint Security, and Network Extension frameworks
• Design and execute manual test plans for system extensions, inter process communication, and low level operating system integration points
• Explore and document edge cases, race conditions, compatibility scenarios, and regressions across macOS versions
• Reproduce and isolate complex issues related to sandboxing, SIP and TCC interactions, launch services, and daemon behaviors
• Work directly with development, support, product, and automation teams to triage, verify, and regress bugs and compatibility issues
• Validate interactions between the platform and third party macOS apps and services
• Collaborate with SDETs to turn exploratory and regression cases into automation candidates
• Maintain close familiarity with changes in macOS releases and how they may impact functionality and compatibility

We only accept CVs submitted in English.