MTS V, Software Developer - PaaS

Panasonic-posted 3 months ago
$138,000 - $231,000/Yr
Full-time
OR
5,001-10,000 employees
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The K3s Network Engineer will focus on networking for K3s clusters deployed across hybrid architectures (x86, ARM, accelerators). The role involves designing, implementing, and maintaining cluster networking that integrates with external systems. This includes writing Kubernetes controllers, managing IP address allocation, configuring VLANs outside of K3s and exposing them inside, extending networking with Multus CNI, and ensuring clusters support advanced CNI (Cilium/Calico) and bare-metal load balancing. The engineer ensures application and infrastructure networking is reliable, scalable, and secure.

  • Design and implement networking for K3s hybrid clusters with support for multi-interface and multi-network scenarios.
  • Configure, extend, and optimize CNI plugins, with a focus on Multus and Cilium/Calico.
  • Enable workloads to use VLAN-backed networks, SR-IOV, or multiple interfaces when required.
  • Deploy and manage bare-metal load balancers (e.g., MetalLB, BGP) for reliable service exposure.
  • Develop custom Kubernetes controllers/operators to manage networking resources declaratively (e.g., IP pools, VLAN assignments, DNS records).
  • Automate network provisioning and reconciliation logic across hybrid environments.
  • Ensure CRDs and controllers integrate cleanly with GitOps pipelines and declarative workflows.
  • Integrate cluster networking with upstream DNS servers for service discovery and external resolution.
  • Manage IP address allocation across nodes, pods, and external interfaces.
  • Implement IPAM solutions that handle hybrid hardware and multi-tenant use cases.
  • Bridge cluster networking with underlay/overlay networks (e.g., VLANs, BGP).
  • Ensure external VLANs can be safely consumed by workloads within K3s.
  • Work with hardware teams on NIC configuration and firmware support for consistent network naming.
  • Implement network policies, encryption, and isolation across multiple CNIs.
  • Integrate monitoring and observability for networking (e.g., Cilium Hubble, Prometheus metrics, custom metrics from controllers).
  • Validate that network paths comply with security and compliance requirements.
  • Work closely with DevOps, SRE, and Hardware teams to align networking design with PaaS requirements.
  • Document networking architecture, CRDs, controllers, and operational runbooks.
  • Provide knowledge transfer to internal teams on advanced networking with Multus, VLANs, and bare-metal load balancers.
  • Bachelor of Science Degree in Computer Sciences, Computer Engineering or Software Engineering, or equivalent experience.
  • 15 + years of experience in software engineering, with significant exposure with Kubernetes/K3s networking, including CNIs.
  • Hands-on experience with Multus CNI for multi-network attachment definitions.
  • Strong knowledge of Cilium or Calico for advanced networking, security, and observability.
  • Experience with bare-metal load balancers (MetalLB, BGP).
  • Proficiency in developing Kubernetes controllers/operators in Go (controller-runtime, Kubebuilder, or Operator SDK).
  • Experience with IP address management (IPAM) and DHCP/DNS integration.
  • VLAN configuration and bridging external networks into Kubernetes.
  • Proficiency in Linux networking (netlink, iproute2, eBPF tools).
  • Strong debugging skills for pod, node, and external system networking.
  • Security expertise in multi-network Kubernetes (RBAC, network policies, encryption).
  • Flexible paid time off for exempt salaried employees.
  • 14 vacation days per year + 7 sick days + 3 personal days for non-exempt hourly employees.
  • 11 company paid holidays per year.
  • Medical insurance offerings from Aetna and Kaiser.
  • Dental PPO and DMO options & Vision insurance through EyeMed or VSP.
  • 401K with 50% match on up to 8% contribution, fully vested from day 1.
  • Wellness Program, Counseling services, FSA & HSA.
  • Life Insurance for employee, spouse and child, AD&D Insurance.
  • Long-term and Short-term disability, Critical Illness Insurance, Accident Insurance.
  • Legal Assistance, Pet Insurance, Identity Theft Protection.
  • Dependent Care FLSA, Education Assistance, Commuter Program, Employee Purchase Program.
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