Senior Network Engineer - Hybrid & Security Solutions

Tieto Corp.; Poznań; Hybrid; PLN 180,000 - 260,000; Full time

Job summary

Tieto is seeking a Senior Network Engineer in Poznań to design, implement, and operate complex network and security solutions across LAN, WLAN, WAN, VPN, and firewall environments.

You will troubleshoot, monitor performance, and ensure reliability and security of customer networks, while supporting on-site engineers and remote teams. The role requires 5+ years of experience and strong Cisco/ Fortinet/Check Point expertise.

Qualifications

• 5+ years of experience in network administration.
• 5+ years of experience maintaining Cisco, Fortinet, or Check Point NGFW environments.
• Strong knowledge of L2/L3 networking protocols (STP, LACP, L2 security, 802.1X, OSPF, BGP).
• TCP/IP stack protocols (DNS, DHCP, SMTP, SNMP, ICMP).
• Hands-on wireless deployment and troubleshooting.
• Experience with VPN solutions and encryption services.
• Experience with network monitoring tools.
• Basic Windows and Linux OS understanding.
• Strong troubleshooting and analytical skills.
• Customer-focused mindset and strong communication skills.
• English proficiency at Upper-Intermediate level or higher.

Responsibilities

• Design, configure, implement, and operate complex network and security solutions.
• Troubleshoot LAN, WLAN, WAN, VPN, firewall, and NGFW environments.
• Perform patch management of network solutions.
• Monitor network performance and capacity and identify opportunities for improvement.
• Analyze network issues and their impact on customers’ business.
• Secure network systems by establishing and enforcing policies, standards, and guidelines.
• Monitor network operational status, gather and prioritize technical information, and provide reporting.
• Provide remote technical support to on-site engineers and end users/customers.
• Analyze technical requirements and translate them into suitable network solutions.
• Proactively identify and propose improvements to services and solutions.
• Stay up to date with relevant network technologies, services, and products.

Skills

Network administration

Troubleshooting

Analytical skills

Customer focus

English proficiency

Tools

Cisco

Fortinet

Check Point

Job description

Tieto is seeking a Senior Network Engineer in Poznań to design, implement, and operate complex network and security solutions across LAN, WLAN, WAN, VPN, and firewall environments.

You will troubleshoot, monitor performance, and ensure reliability and security of customer networks, while supporting on-site engineers and remote teams. The role requires 5+ years of experience and strong Cisco/ Fortinet/Check Point expertise.