Engineering Team Lead, Sandbox

Job summary

Responsibilities

This is a people-leadership role from day one. You will manage the team — hiring, coaching, performance, growth paths, honest feedback — while staying close to the code: roughly half your time in architecture decisions and the hardest technical problems the team faces, the other half leading your…

• Build the isolation layer: microVMs or containers, namespaces, cgroups, seccomp, snapshot and restore.
• Own the security boundary. Customers run code they didn't write and can't fully trust — your systems make that safe.
• Scale to fleets: creation latency, density, and lifecycle management for thousands of concurrent environments.
• Write Go alongside your team and own the architecture and the hardest implementation decisions.
• Grow the engineers, not just the software — set the standard for ownership and coach people past their comfort zone.

What they're looking for

• 2+ years of real people leadership. You have managed engineers — hired, coached, given honest feedback, and grown them.
• Deep Linux internals: namespaces, cgroups, seccomp, virtualization — ideally microVMs of the Firecracker class.
• You have shipped production systems in Go. Not dabbled. Shipped.
• You understand network isolation at the packet level — not just firewall rules.
• Performance instincts: you know what a syscall costs, and you have the profiles to prove you've cared.

Tech stack

• Kubernetes