> Markdown version of [/jobs/ext/4577824-privacy-focused-senior-software-engineer-rust-c](https://www.wearedevelopers.com/jobs/ext/4577824-privacy-focused-senior-software-engineer-rust-c). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Privacy-Focused Senior Software Engineer (Rust/C++) - **Company:** Mozilla - **Location:** Tarragona, Spain - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), C++ (Programming Language), Firefox, Gecko (Software), Web Platforms, Rust (Programming Language), Multithreading - **Published:** November 5, 2026 - **Apply:** https://www.buscojobs.com.es/privacy-focused-senior-software-engineer-rust-c-en-tarragona-ID-378774595 ## About the Role As part of a distributed team across Europe and the US, you will improve Gecko and contribute high-quality C++, Rust, and JavaScript code. A strong background in memory safety and multi-threaded systems is essential. #J-*****-Ljbffr ## Description Mozilla is seeking a Senior Software Engineer to join the Privacy Team and advance the Firefox Web Platform from Spain. You will help implement privacy protections, anti-tracking features, and threat intelligence to safeguard millions of users.As part of a distributed team across Europe and the US, you will improve Gecko and contribute high-quality C++, Rust, and JavaScript code. A strong background in memory safety and multi-threaded systems is essential.#J-*****-Ljbffr