Proton (privacy & productivity) is hiring multiple full-time, Europe-based (hybrid onsite) roles, primarily Mail desktop-related positions and other product roles. New Rust-based client architecture. Job listings hosted on Greenhouse.

SIG is a global quantitative trading firm founded with an entrepreneurial mindset and a rigorous analytical approach to decision making. As one of the largest proprietary trading firms in the world we are experts in trading all listed financial prod…