C++ Software Engineer — Systems

About UsVast.ai's cloud powers AI projects and businesses all over the world. We are democratizing and decentralizing AI computing—reshaping our future for the benefit of humanity.We are a growing and highly motivated team dedicated to an ambitious technical plan. Our structure is flat, our ambitions are out‑sized, and leadership is earned by shipping excellence.We seek engineers with strong intrinsic drive, a true passion for advancing the state of the art, and a mix of architecture, coding, and communication skills.LOCATION: On-site at our office in San Francisco or Westwood, Los Angeles.About the RoleAs a Systems Software Engineer, you will work on key performance critical systems such as the daemon which orchestrates every host in our fleet. You will improve the performance, reliability and capability of our infrastructure and containerization technologies including monitoring and telemetry.Full-timeOn-site at either our SF or LA officesTech StackC, C++, Python, LinuxIdeal ExperienceProgramming: Strong programming skills in at least one language, ideally C++Linux and Virtualization: Extensive knowledge of Linux kernel internals, containerization technologies, and virtualizationIsolation Techniques: Deep understanding of workload and network isolation techniques in multi-tenant environmentsCloud Security: Experience in securing and hardening cloud infrastructure, particularly in environments with untrusted workloadsMulti-tenant Security: Strong background in workload and network isolation, network security, and cloud-native security practices GPU Security: Experience with GPU programming and an understanding of GPU-specific security concerns.Key ResponsibilitiesExpand and extend our GPU cloud daemonDesign and deploy market-based resource management systemsHarden code and infrastructure to meet zero‑trust standards Benchmark, profile, and eliminate bottlenecks across hypervisor, container, and network layersInterview Process (≈ 1 week)After submitting your application, our technical team reviews your credentials. If selected, you'll proceed through the following stages:15 min - Initial screening (virtual)45 min - Quick dive into Vast, systems and architectures (virtual)1 hour - LLM-assisted coding assessment (virtual)2 hours - Meet and greet with coding assessment (on-site)Annual Salary Range$120,000 – $180,000 + equity + benefitsVast.ai is hiring across all experience levels with compensation commensurate with background, experience and potential.BenefitsComprehensive health, dental, vision, and life insurance401(k) with company match Meaningful early-stage equityOnsite meals, snacks, and close collaboration with founders/tech leadersAmbitious, fast-paced startup culture where initiative is rewarded