my team at apple (the Swift performance team) is hiring another engineer! we work on the SIL IR, SIL and LLVM optimization passes for Swift, and language features supporting systems and high-performance programming in Swift. the position is in-person but could be in Cupertino or London https://jobs.apple.com/en-us/details/200641786-0836/swift-compiler-backend-engineer?team=SFTWR