대리급

Required Qualifications/Skills
* 3+ years of relevant industry work experience
* Caring attitude
* Good customer interaction and communication skills.
* Strong listening skills.
* Strong analytical and troubleshooting skills
* Customer focused with a pro-active and responsive approach
* Self-learning
* Knowledge of Oracle Linux, RedHat, CentOS, SUSE/SLES, Ubuntu and/or other Linux platforms
* Experience managing and troubleshooting Linux servers in production settings
* Good knowledge of Linux networking (network services, samba, NFS, SSH, NTP, configuration, bonding, VLANs, tuning, general diagnostics)
* Good system diagnosis skills (kdump, vmstat, sar, iostat, mpstat, loadavg, /proc filesystem)
* Familiarity with systemd, kernel modules, sudo, user management
* General exposure to Linux storage components (mpath/multipathing, md, LVM, filesystems)
* Linux package management (rpm, yum/dnf) Additional Qualifications/Skills
* Strong written and verbal communication skills in English and Korean
* Empathic awareness
* Good negotiation skills
* Ability to express and describe complex situations in a simple and effective way
* Ability to summarize a detailed conversation in a brief and clear way * Decision making in ambiguous situations
* Excellent system-level debugging skills (dtrace, systemtap, BPF, module debugging, debugfs, sysfs, vmcore analysis)
* Excellent knowledge of the Linux OS internals (syscalls, kernel threads, memory management, slabcache, hugepages, OOM, run queues), particularly networking (sockets, buffers, windowing)
* Experience in diagnosing network configuration issues and network performance (ifconfig, ip, BPF, netstat, ss, TCP, UDP, tuning, routing, traceroute)
* Sound experience in network packet analysis and troubleshooting (tcpdump, wireshark etc.)
* Good exposure to Linux authentication (pam.d, openldap etc.)
* General Linux security awareness (SELinux)
* Knowledge and experience with IPSec, SWAN, DHCP, NAT, IPv6, Firewall technologies (iptables/firewalld)
* Knowledge of network routing protocols (e.g. BGP, RIPv2, OSPF)
* Experience with enterprise grade storage systems (SAN, NAS, RAID)
* Filesystem diagnosis and troubleshooting (ext4, btrfs, xfs, ocfs2 etc.)
* Experience with Linux storage management (dm, mpath, udev, LVM)
* Knowledge with XWindows, Linux desktop GUI (KDE, Gnome etc.)
* Linux printing (PPD, CUPS)
* Experience with Linux server clustering (Corosync/Pacemaker, RHCS, Oracle Clusterware)
* Experience with Virtualization and Cloud (Public or Private) Infrastructures
* Experience in Azure or AWS based Cloud Architecture and migration is a plus
* Experience working on remote management systems like ILOM, IMM, DRAC etc.
* Experience working in Linux containers (Docker, LXC, Kata) and orchestration technologies (Kubernetes) (Cloud Native)


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