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Senior Software Engineer, Core Cloud Engineering

Vultr

$120,000 - $150,000
Dec 5, 2025
Remote, US
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Vultr is seeking a Senior Software Engineer, Core Cloud Engineering to enhance its high-performance cloud infrastructure by improving hypervisor API integration, networking automation, and performance optimization to support its growing global platform serving 1.5 million users.

Requirements

  • Proficiency in compiled languages like Rust (preferred), C, and Go, with experience in PHP for integration tasks.
  • Strong experience with hypervisor technologies such as libvirt, QEMU, and KVM.
  • In-depth knowledge of networking protocols and tools, particularly BGP, Open vSwitch (OVS), and related automation frameworks.
  • Advanced skills in performance profiling, tuning, and optimization across I/O, network, and storage layers.
  • Familiarity with database systems and concepts, with a preference for MySQL.
  • Expertise in Linux systems administration and low-level troubleshooting.
  • Experience building and maintaining CI/CD pipelines with tools like Gitlab.

Responsibilities

  • Design, implement, and maintain low-level integrations with hypervisor technologies like libvirt, QEMU, and KVM to enhance platform capabilities.
  • Develop and maintain automation around Open vSwitch (OVS), BGP routing, and other networking components to streamline datacenter operations.
  • Analyze and optimize hypervisor performance across I/O, networking, and storage subsystems to meet scalability and efficiency goals.
  • Write efficient and maintainable code in Rust, C, and Go for high-performance services, ensuring reliability and maintainability.
  • Build and enhance tooling for automated hypervisor provisioning, monitoring, and management.
  • Work closely with other engineering teams to align development efforts with reliability, scalability, and business objectives.
  • Produce high-quality technical documentation for APIs, systems, and processes to support team collaboration and scalability.

Other

  • Effective communication and collaboration abilities to work cross-functionally with teams and stakeholders.
  • A commitment to continuous learning and fostering a culture of technical excellence.
  • Mentorship: Share knowledge with team members, helping to grow expertise in low-level systems and performance engineering.