Senior Operating Systems Administrator

Description

Job Summary: Infrastructure professional focused on SAN, virtualization, backup, servers, and containers, responsible for planning, implementing, and administering systems. Key Highlights: 1. SAN administration with focus on architecture and security. 2. Experience in virtualization, backup, and data recovery. 3. Implementation and management of containers (Docker, Kubernetes). Plan, implement, and administer SAN infrastructures, defining architecture, configuring Fibre Channel switches, controllers, HBAs, and storage arrays; Manage provisioning and expansion of volumes, pools, and LUNs, ensuring adequate capacity and performance for servers and applications; Apply storage virtualization, creating dynamic pools, thin provisioning, and tiering policies to optimize resource utilization; Establish and enforce security policies for data at rest and in transit within the SAN, including encryption, zoning, authentication, and access control; Design, deploy, and maintain backup and recovery strategies, selecting hardware (disks, tapes, SSDs) and backup software, configuring schedules, windows, and retention periods; Diagnose and resolve backup/restore incidents, identifying hardware failures, software errors, and data corruption; Administer physical servers (rack, blade, tower), performing installation, configuration, hardening, and lifecycle management; Deploy and manage virtualization platforms (VMware vSphere, Microsoft Hyper\-V, KVM), creating, monitoring, and optimizing virtual machines and high-availability clusters; Install, configure, and maintain Windows Server operating systems and Linux distributions, ensuring updates, permissions, and service roles; Automate routine tasks using PowerShell, Bash, Ansible, Puppet, Chef, or similar tools, reducing manual effort and increasing process reliability; Monitor server, storage, and network performance and capacity, generating proactive alerts and capacity planning reports; Design, deploy, and operate container platforms, building Docker images and orchestrating Kubernetes clusters in production environments; Manage software-defined networking and storage for containers, configuring overlay networks, persistent volumes, and distributed storage solutions; Implement container security practices, including resource isolation, vulnerability scanning, access control, and compliance policies; Document configurations, procedures, and incidents, ensuring traceability, regulatory compliance, and knowledge sharing within the team; Minimum of 3 (three) years of professional experience covering the following tools and knowledge areas: d.1\) Storage Area Network (SAN): d.1\.1\) SAN Architecture: Understanding of physical and logical components of a storage network, including switches, controllers, HBAs (Host Bus Adapters), storage arrays, etc. Storage Protocols: SAN protocols such as Fibre Channel, iSCSI, FCoE, NFS, SMB, etc. d.1\.2\) Storage Provisioning: Provision, expand, and manage storage volumes for servers and applications. d.1\.3\) Storage Virtualization: Storage virtualization technologies to create virtualized storage pools and dynamic provisioning capabilities. d.2\) Security: Implementation of security policies to protect sensitive data stored in SANs. d.3\) Backup: d.3\.1\) Storage Systems: Understanding of different types of storage systems. d.3\.2\) Hard drives, storage arrays, tape drives, solid-state drives (SSDs), etc. d.4\) Information Security: Encryption, authentication, authorization, access control, identity management, and security policies. d.5\) Data Management: Data management including classification, indexing, deduplication, compression, and archiving. d.6\) Problem-Solving Skills: Resolving issues related to backup and data recovery, including identification of hardware failures, software errors, and data corruption. d.7\) Servers: d.7\.1\) Server Hardware: d.7\.2\) Rack\-mount, blade, tower, etc., and their respective functionalities and capacities. d.7\.3\) Virtualization: VMware vSphere, Microsoft Hyper\-V, KVM, etc., to create and manage virtual machines (VMs). d.7\.4\) Operating System: Installation, configuration, and administration of operating systems such as Windows Server, Linux (Red Hat, CentOS, Ubuntu, etc.), and their respective server roles. d.8\) Automation: Automating routine tasks using tools such as PowerShell, Bash scripting, Ansible, Puppet, Chef, etc. d.9\) Monitoring and Diagnostics: Server performance monitoring, problem identification, and effective diagnostics. d.10\) Containers: d.10\.1\) Docker and Kubernetes: Docker for application packaging and Kubernetes for large-scale container orchestration and management. d.10\.2\) Container Deployment: Docker in production environments. d.10\.3\) Container Networking and Storage: Docker, persistent volumes, distributed container storage, etc. Compensation: Up to R$6\.404,69 per month Benefits: * Medical insurance * Meal allowance * Transportation allowance Selection Question(s): * Minimum of 3 (three) years of verifiable professional experience * Experience with Storage Area Network (SAN)? * Experience with SAN architecture? * Experience with security: Implementation of security policies to protect sensitive data stored in SANs? License/Certification: * VCAP (VMware Certified Advanced Professional) certification (Mandatory) * CKA (Certified Kubernetes Administrator) certification (Mandatory) Work Location: On-site