Linux & Network Administrator

Job description

Job Description – Linux & Network Administrator Company Name: Altius Customer Service Pvt. Ltd. Industry: BPO / IT-Enabled Services Job Role: Linux & Network Administrator Employment Type: Full-Time Job Summary Altius Customer Service Pvt. Ltd. is seeking a skilled Linux & Network Administrator to manage and maintain our Linux-based server infrastructure and network environment. The ideal candidate will be responsible for ensuring system uptime, network security, and smooth IT operations supporting BPO business processes. Key Responsibilities Linux Administration  Install, configure, and maintain Linux servers (Ubuntu, CentOS, RHEL, Debian).  Perform routine system monitoring, log analysis, and basic troubleshooting.  Manage users, groups, permissions, and access controls.  Handle file system management including disk partitions, mounting/unmounting, and storage monitoring.  Manage system services using systemctl (start, stop, enable, status).  Monitor system performance and processes using tools like top, htop, ps, and kill.  Apply security patches and updates using package managers (apt, yum, dnf, rpm). Network Administration  Monitor and manage network devices including routers, switches, firewalls, and access points.  Configure and support basic network services such as DHCP, DNS, NAT, and VLANs.  Troubleshoot LAN/WAN connectivity and performance issues.  Ensure network availability and performance monitoring.  Implement and maintain basic firewall rules and access control policies.  Support secure connectivity using protocols like SSH and HTTPS. Required Skills & Technical Knowledge Linux Skills  Strong hands-on experience with Linux distributions: Ubuntu, CentOS, RHEL, Debian.  Proficiency in package management (apt, yum, dnf, rpm).  User and group administration (useradd, passwd, chmod, chown).  File system and disk management.  Process and service management. Networking Skills  Good understanding of IP addressing, subnetting, CIDR notation.  Knowledge of public vs private IP addressing.  Basic routing concepts (static routes, default gateway).  Switching fundamentals: MAC addresses, ARP, broadcast domains.  VLAN configuration and concepts.  Familiarity with common protocols: DHCP, DNS, HTTP/HTTPS, FTP, SSH, SNMP.  Network troubleshooting using tools like ping, traceroute, ip, ifconfig, netstat, nslookup. Preferred Qualifications  Diploma / Bachelor’s degree in IT, Computer Science, or related field.  1–4 years of experience in Linux and network administration (BPO/IT services experience preferred).  Basic knowledge of network security and firewall configurations.  Ability to work in a 24/7 support or shift-based environment (if required).