Debugging matters — developers spend more time in the debugger than they spend on writing new code. Apple’s debugger/compiler integration team is looking for an engineer to improve the Swift debugging experience on Windows. This involves work on LLDB, the Swift compiler, and related tools. You will closely collaborate with the Swift and LLVM open-source projects. Our team works at the intersection of compiler and debugger technology: we are responsible for the debugging experience — from generating debug information in our compilers (Clang, Swift, LLVM) to the language plugins in the LLDB debugger. LLDB’s outstanding strength is its powerful expression evaluator that is backed by the actual compiler to JIT expressions typed by the developer into the debugged process and implement them. This flexibility allows LLDB to be used even in contexts outside of traditional debugging: For example, it is also the technology powering the Swift REPL.