Mozilla is seeking a Senior Software Engineer to join the Privacy Team and advance the Firefox Web Platform. You will work on privacy protections, anti-tracking, and threat intelligence, contributing to Gecko and the broader browser stack. This role supports a remote arrangement within Spain, collaborating across Europe and the US. Adecuado candidates have 4+ years in C++/Rust, strong memory-safety and multi-threading knowledge, and a track record of delivering complex features on tight schedules.