Network Security Engineer

Network Security Engineer

The Role

We are looking for a motivated Network \& Security Engineer to join our Infrastructure \& Network Engineering team.

Our team designs, operates and secures the company’s data\-center, office and telecommunications networks. We manage switching, routing, firewalls, VPNs, internet connectivity, inter\-site connections and network services across multiple locations.

Your primary focus will be Intellico’s network and security infrastructure, including Cisco networking, Palo Alto firewalls, BGP routing and traffic monitoring. The position also includes selected data\-center, corporate IT and telecommunications responsibilities.

You will work closely with the team to ensure secure and reliable connectivity for Intellico’s infrastructure and messaging platforms.

Key Responsibilities

Design, operate and maintain data\-center, office and inter\-site networks

Configure and support Cisco switches, routers and related network infrastructure

Operate Palo Alto firewalls and maintain firewall security policies

Manage site\-to\-site VPNs, remote\-access VPNs and external partner connections

Operate BGP routing and internet edge traffic steering

Manage VLANs, routing, NAT, network segmentation and IP address spaces

Manage internet upstreams, carrier connections and connectivity between colocation sites

Plan and implement network architecture changes, upgrades and lifecycle activities

Monitor network availability, performance, capacity and traffic flows

Troubleshoot routing, latency, packet loss, DNS, firewall, VPN and connectivity incidents

Capture and analyze network and protocol traffic using Wireshark

Maintain network diagrams, configuration backups, inventories and operational runbooks

Implement network segmentation, infrastructure hardening and vulnerability remediation

Review firewall rules, access controls, firmware versions and security configurations

Support installation, cabling and replacement of network hardware at colocation sites

Support Proxmox, Linux, DNS, DHCP, NTP and other infrastructure services where required

Support network\-level troubleshooting of SMPP, SCTP and SS7/SIGTRAN connectivity

Provide secondary support for office networks, Wi\-Fi and corporate IT services

Participate in incident management, infrastructure changes and the compensated on\-call rotation

Requirements

Good hands\-on knowledge of TCP/IP networking

Experience with Ethernet, VLANs, switching, routing and network segmentation

Practical understanding of firewalls, NAT, access controls and VPN technologies

Experience with Cisco or comparable enterprise network equipment

Experience with Palo Alto or comparable firewall platforms is an advantage

Knowledge of BGP, internet routing and multi\-site connectivity is an advantage

Practical experience with Wireshark and packet\-level troubleshooting

Understanding of network monitoring, capacity management and configuration backup

Basic Linux and infrastructure administration knowledge

Knowledge of Proxmox, Ceph, ZFS or virtualization environments is an advantage

SMPP, SCTP, SS7 or SIGTRAN knowledge is an advantage

Strong soft skills, including analytical thinking, teamwork, ownership and communication

Education in IT, networking, cybersecurity, computer science or a related field, e.g.:

Informatiker/in EFZ, Fachrichtung Plattformentwicklung

ICT\-System\- und Netzwerktechniker/in mit eidg. Fachausweis

Cyber Security Specialist mit eidg. Fachausweis

A comparable technical or university qualification

Fluent in English, German is an advantage, resident in Switzerland

Practicalities

Location: Freienbach, Switzerland

Employment: Permanent, full\-time position, 80%\-100%

Working model: Primarily office\-based, with up to two home\-office days per week where operational responsibilities allow

Schedule: Normal working hours with participation in an on\-call rotation

Travel: Occasional visits to other Intellico offices and colocation facilities

What We Offer

Hands\-on responsibility for networks connecting offices, data centers, platforms and telecommunications partners

Exposure to switching, routing, firewalls, BGP, VPNs and telecom connectivity

The possibility to develop toward network architecture, cybersecurity or telecom engineering

Meaningful responsibility in a small team without unnecessary organizational layers

High\-quality technical equipment and a modern, comfortable office in Freienbach close to public transport jpid9e65614jm jit0832jm jiy26jm