Job Description
We are looking for a Strong K3s Developer with 5+ years of hands-on experience in Kubernetes and, specifically, K3s environments. In this pivotal role, you will be responsible for designing, implementing, and maintaining robust and scalable K3s clusters, primarily in edge computing architectures. You will play a critical part in ensuring the reliability, performance, and security of our containerized applications, working closely with cross-functional teams to drive our Industrial Edge Strategy
Responsibilities
- K3s Cluster Management: Design, deploy, configure, and manage K3s clusters primarily on-prem but also on Cloud as needed. This includes managing single-node edge clusters to multi-node high-availability deployments.
- Infrastructure as Code & Automation: Implement and maintain GitOps workflows using tools like ArgoCD and Flux for declarative application management and infrastructure automation. Define, validate, and manage Kubernetes manifests, Helm charts, and Custom Resource Definitions (CRDs).
- Application Deployment & Optimization: Develop and maintain software for edge devices, ensuring seamless integration with cloud services. Optimize K3s performance on constrained hardware and in air-gapped systems, ensuring efficient resource utilization.
- Operations & Reliability: Monitor and maintain cluster health, including networking, storage, and node availability. Develop and implement self-healing, scaling, and failover strategies for hybrid deployments. Establish and maintain robust backup/restore, upgrade, and security hardening processes.
- Networking & Security: Deep understanding and configuration of Kubernetes Container Network Interface (CNI) plugins and network policy management. Troubleshoot container runtimes, DNS resolution, and overlay networking issues. Enforce network policies, RBAC, secrets management, and container security best practices.
- Collaboration & Documentation: Work closely with DevOps, SRE, platform, and hardware teams to align K3s cluster deployments with overall platform goals. Document cluster provisioning, deployment flows, operational runbooks, and Disaster Recovery procedures. Train internal teams on K3s management and declarative deployment practices.
- Innovation: Stay current with advancements in K3s, Kubernetes, and edge computing technologies, evaluating and recommending new tools, technologies, and processes to enhance our platform.
Qualifications
- Bachelor's degree in Computer Science, Engineering, or a related field.
- 5+ years of hands-on experience managing and operating Kubernetes/K3s platform components and lifecycle operations.
- Proven experience with K3s deployment and lifecycle management, specifically in hybrid and edge computing environments.
- Strong understanding of multi-node hybrid clusters across x86, ARM, and accelerators.
- Expertise in containerization technologies, including Docker and container runtimes (containerd, CRI-O).
- Proficiency with GitOps tools (e.g., ArgoCD, Flux) and declarative deployment workflows.
- Extensive experience with Helm charts for application packaging and deployment.
- Strong scripting skills in languages such as Go, Bash, Python, along with proficiency in YAML/JSON configuration and REST API development.
- Solid understanding of cloud platforms (GCP) and their integration with Kubernetes.
- Demonstrated experience with CI/CD pipeline implementation and automation.
- Familiarity with monitoring and logging tools like Prometheus and Grafana.
- Experience with Infrastructure as Code tools such as Terraform or Ansible.
- Excellent problem-solving, debugging, and troubleshooting skills in complex distributed systems.
- Strong communication and collaboration abilities, with a track record of working effectively in cross-functional teams.
- Certified Kubernetes Application Developer (CKAD), Certified Kubernetes Administrator (CKA), or Certified Kubernetes Security Specialist (CKS) certifications.
