Senior Network Engineer

Quick Facts

• Role: Senior Network Engineer

Description

Own enterprise-wide networking business requirements and translate them into HLD/LLD for LAN, WAN, WLAN, and security infrastructure. Design, test, and develop networking infrastructure and supporting services (DNS, IPAM, AAA), enforce security policies, and troubleshoot complex network/security problems in collaboration with internal teams and an MSP. Lead automation and Infrastructure-as-Code (IaC) initiatives using Python, Ansible, and Terraform.

Responsibilities

• Serve as primary point of contact for business requirements across production facilities and R&D environments

• Design, test, and develop enterprise-wide networking across LAN, WAN, WLAN, security, including DNS, IPAM, and AAA

• Enforce network security policies, firewall rulesets, and secure remote access protocols with Cybersecurity teams

• Collaborate with the Managed Service Provider (MSP) to maintain LAN/WAN/WLAN/security and DNS/IPAM/AAA globally

• Act as a Subject Matter Expert (SME): drive continuous improvement, manage configuration, and update HLD/LLD while consulting MSP and internal teams

• Define and optimize operational processes with the MSP, ServiceNow team, and other IT groups

• Lead automation efforts using Python, Ansible, and Terraform to implement IaC

Requirements

• Minimum 5 years of experience in large-scale network and security planning

• Cisco routing/switching experience and enterprise-grade security solutions (Fortinet preferred)

• English proficiency (written and spoken)

• Bachelor’s degree in Computer Information Systems (or related field)

• Knowledge of TCP/IP, STP, DNS, OSPF, and BGP

• Hands-on experience with Cisco Catalyst and Nexus switches, routers, and Cisco ISE

• Proven troubleshooting ability for complex enterprise network problems (e.g., SD-WAN/IPSec performance, certificate management, Wi-Fi quality)

• Understanding of HTTP/HTTPS, web application security (OWASP Top 10), and DNS standards

• Minimum Cisco CCNP (or equivalent knowledge)

• Availability for rotating standby/on-call coverage outside regular working hours

Benefits

• Long-term contract of employment

• Annual reward

• Flexible working hours

• Hybrid work model (3 days from office in Warsaw)

• Medical care with basic dental package, with options to extend to medical center and family members

• Life insurance with possible extended scope

• Sports card, language courses, and extensive training offer

• Festive benefits paid in April and December

• Wellbeing and CSR activities with room for your initiatives