Virtualization Engineer

Own the architecture and core capability development of our Linux virtualization platform and MicroVM stack, with a focus on continuously improving VM startup latency, resource isolation, reliability, and security.

Responsibilities

Design, develop, and optimize the architecture and performance of our Linux virtualization platform. Own the design, implementation, and core capability development of our MicroVM technology stack. Continuously improve VM startup speed, resource isolation, reliability, and security.

Requirements

5+ years of experience in Linux systems or virtualization development. Deep understanding of the Linux kernel, KVM/QEMU architecture, and virtualization fundamentals. Hands-on experience with MicroVM technologies such as Firecracker, Cloud Hypervisor, and Kata Containers. Familiarity with at least one major cloud platform: AWS, GCP, or Azure.

Strong proficiency in C/C++, Rust, or Go, with solid system debugging and performance profiling skills. An experienced Code Agent user who can effectively leverage AI coding tools for complex systems development, debugging, and code review. Ability to conduct in-depth technical collaboration in Chinese, and to read, write, and participate in day-to-day technical communication in English.

Preferred Qualifications

Upstream contributions to open-source projects such as the Linux kernel, KVM, QEMU, Firecracker, Cloud Hypervisor, Kata Containers, or rust-vmm. Core engineering experience on compute or virtualization teams at a major cloud provider, with production experience operating large-scale VM or MicroVM clusters. Deep optimization experience in areas such as VM snapshot and restore, live migration, memory overcommit and deduplication, device passthrough, virtio, or vhost-user.

R&D experience related to AI Agent sandboxes, Serverless infrastructure, or secure container technologies such as E2B or g. Visor. Open-source projects, technical publications/blogs, or equivalent non-public engineering accomplishments that demonstrate strong systems expertise.