Position: Tier 2 Technical Support Engineer
Company: IT-Rex
Experience required: 3y
English level: intermediate

Description:
Harmonic is a leading provider of innovative broadband solutions that deliver video, voice and data to telecom providers around the world.
Harmonic EDGE team works on developing the industry’s first software-based CCAP solution. This solution allows cable operator companies to deliver the IP-based data, video, and voice services to millions of customers.
GlobalLogic team is involved in development, manual and automated testing, as well as in solution integration at customers’ head.
Requirements:
1) Experience with support of Linux based operating systems.
We expect that you know:
– how systemd works (systemctl, journalctl)
– main networking tools (ifconfig, netstat, iptables)
– how to work with file system (fsck, fstab, mount, lsblk)
– how to identify and troubleshoot performance issues on the system
– basic bash scripting (while, for, sed, awk, timeout, printf)
2) Experience with support of networking environment.
We expect that you:
– have good experience with tcpdump and wireshark
– know OSI model with detailed description of each layer
– have good DHCP understanding (messaging, relays, optional fields)
– know on the basic level main routing protocols (OSPF, BGP, EIGRP)
– have good understanding on how packets/frames traverse the network (MAC tables, ARP, encapsulation/decapsulation)
– have basic understanding of IGMP + PIM
– good spoken English
Would be a plus:
– Experience with Salesforce / Jira / Confluence
– Knowledge of Zabbix / Grafana
– Expereince with PostgreSQL / Prometheus
– Python scripting (telebot, pyzabbix)
– Black-Box testing
– Experience with Pacemaker / RabbitMQ / GlusterFS
– Understanding of DOCSIS