2+ years of hands-on Linux administration (command-line proficiency required). Experience in Windows/macOS troubleshooting and support. Familiarity with networking (TCP/IP, VPN, DNS, DHCP). Knowledge of Git, Docker, and virtualization tools. Scripting skills (Bash/Python) for automation. Certifications like RHCSA, CompTIA Linux+, Microsoft, or Apple are a plus. Key Responsibilities Linux Systems Administration Install, configure, and maintain Linux servers/workstations (Ubuntu, CentOS, Debian). Manage user access, permissions, and security policies. Monitor system performance, troubleshoot issues, and optimize resources. Automate repetitive tasks using Bash/Python scripting. Manage Git repositories and Docker containers. Windows & macOS Support Provide Level 1/2 technical support for Windows/macOS (software, hardware, network issues). Deploy updates, patches, and security compliance measures. Integrate Windows/macOS devices with Linux systems (file sharing, authentication). Networking & Security Configure and maintain routers, switches, firewalls, and VPNs. Manage DNS, DHCP, and network monitoring tools. Implement security measures (firewalls, intrusion detection, audits). Documentation & User Support Maintain system documentation, IT policies, and procedures. Resolve employee IT issues via helpdesk tickets, email, or in-person support. Backup & Recovery Design and test backup strategies (local/cloud). Ensure data integrity and rapid disaster recovery.

Deep expertise in AWS/Azure (EC2, VPC, CloudWatch, cost optimization, Reserved Instances). Strong knowledge of Docker, Kubernetes, and container orchestration. Proficiency in Infrastructure-as-Code (Terraform, CloudFormation, Helm). Experience with CI/CD pipelines (GitHub Actions, Jenkins, Azure DevOps). Strong background in networking (VPN, static routes, HAProxy, Nginx, OpenSSH). Hands-on experience with security best practices (IAM, firewalls, DDoS protection, certificate management). Familiarity with monitoring tools (Prometheus, Grafana, ELK Stack). Scripting skills in Bash/PowerShell/Python for automation. Knowledge of Proxmox, VM management, and hardware troubleshooting. Experience with Kafka/Zookeeper, AWS Lambda, and API Gateway. Key Responsibilities Design, implement, and maintain highly available, scalable cloud infrastructure. Optimize AWS/Azure cost structures while ensuring performance and reliability. Automate deployments, monitoring, and recovery processes using CI/CD tools. Manage Kubernetes clusters, Docker environments, and microservices architecture. Implement security best practices for authentication, network policies, and data protection. Troubleshoot and resolve system outages, performance bottlenecks, and deployment failures. Collaborate with development teams to streamline build, test, and release pipelines. Ensure 24/7 system uptime with proactive monitoring and incident response. Document infrastructure, processes, and disaster recovery plans.