Network Infrastructure Engineer

About this role

We are looking for a Network Infrastructure Engineer to support and develop network infrastructure in a production/trading environment. Key Responsibilities Administer and develop network infrastructure based on Cisco Nexus. Configure and maintain VLAN, LACP, vPC, routing, BGP, and VPN ендпоінтс. Work with Palo Alto Networks, including firewall policies, NAT, routing, Site-to-Site VPN, and troubleshooting. Build and maintain connectivity between data centers, providers, and partners.

Organize cross-connects in data centers and coordinate with providers and remote hands. Configure and maintain AWS Direct Connect and Azure ExpressRoute / VPN connectivity. Troubleshoot network issues in production environments, including latency, packet loss, routing, firewall, VPN, and physical connectivity issues. Support network connectivity for Windows and Linux servers. Monitor the availability and health of network infrastructure.

Document, standardize, and automate network equipment configuration using Ansible. Manage cloud network infrastructure using Terraform / Infrastructure as Code. Participate in designing and maintaining fault-tolerant and highly available network architecture. Requirements 5+ years of experience in Network Infrastructure Engineering role. Strong knowledge of TCP/IP, VLAN, STP, LACP, NAT, ACL, DNS, and routing. Hands-on experience with BGP.

Experience with Git and CI/CD practices for Infrastructure as Code. Experience administering Cisco network equipment, preferably Cisco Nexus. Hands-on experience with Palo Alto Networks or similar enterprise firewalls. Experience configuring and troubleshooting IPsec Site-to-Site VPNs. Understanding of Data Center networking and cross-connect connectivity. Practical understanding of networking in AWS and/or Azure. Experience using Ansible for network infrastructure configuration and automation.

Experience using Terraform. Systematic approach to troubleshooting and experience handling production incidents. Experience with network monitoring and logging tools such as SNMP, Syslog, Grafana, Zabbix, or similar solutions. English proficiency at B1+ (sufficient for working with technical documentation and communicating with international providers). Nice to Have: Experience with AWS Direct Connect / Azure ExpressRoute.