Job Summary: We’re looking for an experienced Senior System Administrator with deep expertise in Node.js server environments , Linux systems , and enterprise network infrastructure . This role involves managing system stability, optimizing performance, and ensuring robust security across our IT landscape. If you're a tech leader with hands-on skills and a passion for clean, scalable systems—let’s talk. Key Responsibilities: 🔧 System Administration Install, configure, and maintain Linux (Ubuntu, CentOS, RHEL) and Windows servers. Monitor and enhance system performance, scalability, and availability. Manage user accounts, backups, patches, and security protocols. Automate administrative tasks using Shell, Ansible, or Puppet. ⚙️ Node.js Server Management Deploy, monitor, and optimize Node.js applications in production. Manage process tools like PM2 or systemd. Troubleshoot performance issues and ensure secure server operations. Monitor server logs, memory, and CPU utilization. 🌐 Network Administration Configure and maintain routers, switches, firewalls, VPNs, DNS, and subnets. Monitor LAN/WAN environments and ensure network stability. Implement network security measures and intrusion detection systems. ☁️ DevOps & Cloud Integration (Preferred) Deploy and manage infrastructure on AWS, Azure, or GCP. Set up CI/CD pipelines for Node.js applications. Use tools like Nagios, Zabbix, Grafana, Prometheus, or ELK Stack. (Optional) Implement Infrastructure-as-Code using Terraform or CloudFormation. 🔐 Security & Compliance Enforce firewall, antivirus, and data protection measures. Perform regular audits, risk assessments, and vulnerability scans. Ensure compliance with security standards and internal policies. Required Skills & Qualifications: Minimum 6 years in system, network, and server administration. Expertise in Node.js server environments and Linux administration. Strong knowledge of networking (DNS, DHCP, NAT, VPN, firewalls). Scripting proficiency (Bash/Python). Familiarity with Git and version control systems. Knowledge of Docker/Kubernetes is a plus. Relevant certifications (RHCE, CCNA/CCNP, CompTIA Network+/Security+) are a strong advantage. Soft Skills: Strong problem-solving and analytical thinking. Clear communication and documentation skills. Ability to lead during incidents and work independently. Collaborative and proactive mindset. Preferred Qualifications: Experience with high-availability systems and failover architecture. Familiarity with observability tools like ELK Stack or Datadog. Background in DevOps and modern CI/CD workflows. Ready to join a team that values reliability, security, and smart infrastructure? Let’s build resilient systems together. Show more Show less