
Senior Software Engineer, Sandboxes (London or East Coast Preferred)
Role requires designing, developing, and improving sandbox runtime infrastructure (disposable, isolated microVMs with per-sandbox Docker daemons) across macOS, Windows, and Linux. The position seeks a product-minded engineer with 8+ years of experience in secure isolation, runtime/container/VM infrastructure, reliability and performance, and cross-team technical leadership. Location preference includes London or US East Coast; Docker is remote-first and lists a US salary range ($160,900–$260,700) and considers visa sponsorship on a case-by-case basis.