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Sharp Brains

Network Engineer

Sharp Brains
Poland ยท Part-time ยท Mid-Senior

The Network Engineer L2 provides advanced operational support, monitoring, and troubleshooting for enterprise network infrastructure. This role focuses on incident resolution, change implementation, and escalation support for Level 1 teams, ensuring high availability, performance, and security of LAN/WAN, WLAN, and security devices.

Key Responsibilities

๐Ÿ”น Operations & Support

  • Provide Tier 2 technical support for escalated network issues (LAN, WAN, WLAN, VPN, Firewalls, Load Balancers).
  • Monitor network performance, availability, and capacity using enterprise monitoring tools.
  • Troubleshoot incidents related to connectivity, routing, switching, wireless, and security appliances.
  • Perform root cause analysis and propose long-term solutions for recurring issues.

๐Ÿ”น Configuration & Implementation

  • Assist in deployment and configuration of network devices (routers, switches, firewalls, wireless controllers, VPN gateways).
  • Support firewall rules, VLAN, routing (static, dynamic protocols like OSPF, EIGRP, BGP) changes as per change management process.
  • Implement and maintain QoS, ACLs, NAT, VPN tunnels, and other network services.
  • Contribute to network upgrades, migrations, and optimization projects.

๐Ÿ”น Security & Compliance

  • Support enforcement of network security policies, including patching and access control.
  • Monitor firewall and intrusion prevention alerts, escalating potential security breaches.
  • Assist in audits, compliance checks, and documentation of network configurations.

๐Ÿ”น Collaboration & Escalation

  • Work closely with Level 1 engineers, providing guidance and mentoring.
  • Escalate complex issues to Level 3 / vendor TAC (Cisco, Juniper, Fortinet, Palo Alto, etc.) when required.
  • Coordinate with cross-functional teams (Server, Cloud, Applications) to resolve interdependent issues.

๐Ÿ”น Documentation & Reporting

  • Maintain accurate documentation of network diagrams, configurations, SOPs, and troubleshooting guides.
  • Provide daily/weekly operational reports on incidents, performance, and changes.
  • Contribute to the knowledge base for frontline support teams.

Required Skills & Experience

โœ… Technical Skills

  • Strong knowledge of Routing & Switching (Cisco/Juniper/HP/Aruba).
  • Experience with firewalls and VPN technologies (Cisco ASA, Palo Alto, Fortinet, CheckPoint).
  • Understanding of wireless technologies (WLC, AP configuration, troubleshooting).
  • Familiarity with load balancers (F5, Citrix Netscaler).
  • Hands-on with monitoring tools (SolarWinds, PRTG, Nagios, Zabbix).
  • Knowledge of ITIL process (Incident, Problem, Change Management).

โœ… Qualifications

Key Skills

Ranked by relevance

vpn firewalls palo alto wireless fortinet wlan high availability firewall switches routers citrix server nagios eigrp cloud ospf acls vlan wan lan asa nat
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Posted
Sep 09, 2025
Type
Part-time
Level
Mid-Senior
Location
Jasionka

Industries

Technology Information Media

Categories

Information Technology

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