Boris Spasojevic is a Principle Researcher at Oracle Labs, working on GraalVM. His research is currently focused profile-guided optimizations and inlining for AOT compiled JVM programs. Previously he worked on language-agnostic runtime optimizations for dynamic languages, language-agnostic developer tools and implications of polyglot development. Boris received his PhD from the University of Bern on the topic of software ecosystem-aware developer tools.