Responsibilities

Every agent on Baseten Sandboxes runs in its own microVM. Agents call models, reach tools and APIs, expose services, and more and more often talk to each other. Networking built into today's cloud providers was not designed for very large numbers of isolated machines that suspend, resume, and exchange data constantly.
The Agent Infra team builds its own networking stack for sandboxes, designed from the start for that scale. It runs in user space, with VPP (FD.io) as its main data plane technology, and is built from virtualized network functions (VNF/NFV): carrier-grade, low-latency packet processing designed for very large numbers of agents. In September 2026, Baseten acquired Blaxel, whose sandboxes, storage, and networking are the foundation for Baseten Sandboxes.
You'll build multi-tenant virtual private networking that connects each customer's agents and services privately and securely, using modern overlay technologies.
We are building a cloud, not just using one. We want engineers who expose the network as a programmable API and write the code, not operators who push router and switch configuration. The team is small and ownership is big: we ship in weeks and months, not multi-year programs.
This role is separate from Baseten's GPU-to-GPU networking. Here you'll own how sandboxes connect to each other, to Baseten services, to customer networks, and to the internet.
If you've built user-space data planes, virtualized network functions, or multi-tenant cloud networking and want to design one for agents, we'd love to talk.
EXAMPLE INITIATIVES
Blaxel is joining Baseten to build the future of agentic infrastructure
Securing the open frontier with NVIDIA OpenShell and Blaxel sandboxes
Baseten Sandboxes documentation
Design and build the user-space, VPP-based data plane that connects microVM sandboxes to each other, to Baseten services, and to the internet
Build multi-tenant virtual private networking and overlays (for example EVPN, GENEVE, VXLAN) across regions

Software Engineer, Networking (Agent Infra) at Baseten · LumiJobs

Software Engineer, Networking (Agent Infra)

Responsibilities

Qualification

Required

Preferred

Benefits

Company

Baseten

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