Filip works on compilers and language runtime systems at Apple and in particular on the WebKit open source project. He is ever finishing his PhD in computer science at the S3 Lab at Purdue University. His research interests include memory management (specifically, garbage collection), real-time systems, concurrency, programming languages and compilers. Most of his research has involved various Java virtual machines, including Jikes RVM, Ovm, and Fiji VM. He was variously on the core team of all three. These days most of his work involves WebKit’s excellent JavaScript engine, which is called JavaScriptCore, mostly on the optimizing just-in-time (JIT) compiler and its dynamic type inference engine, but also the interpreter, object model, and garbage collector. He also sometimes commit things to LLVM.