Senior Software Engineer, Notebooks

Build and ship medium-to-large features for the notebook service, container runtimes, and UI, taking ownership from ambiguous problem statements through production and post-launch. Drive platform initiatives including runtime management, patching, environment reproducibility, security/compliance, and observability. Extend the product to run reliably in regulated and air-gapped environments, collaborating cross-functionally with product managers, designers, and platform teams while mentoring junior engineers and participating in on-call.