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Overview Join a highly technical engineering team as a Telecom Infrastructure Network Engineer, responsible for operating and maintaining telecom and data center infrastructure that underpins business-critical messaging platforms. You will manage carrier connectivity and protocol-level troubleshooting across SMPP, SS7/SIGTRAN, and related technologies, ensuring reliability across multiple data center environments. The role also covers enterprise networking, virtualization, storage, and core services, with hands-on work in Linux, Proxmox, Ceph, and ZFS.

You will participate in incident response, infrastructure improvements, and on-call rotations while documenting processes and supporting colocation Verantwortungsbereiche Manage SMPP and SS7/SIGTRAN connectivity with carriers, customers, and mobile network operators Onboard and test new telecom interconnections Troubleshoot protocol-level issues involving SMPP, SCTP, M3UA, and related technologies Manage Cisco-based networking environments, Palo Alto firewalls, VPNs, VLANs, BGP, and internet connectivity Work with Linux systems, Proxmox virtualization, Ceph and ZFS storage Maintain DNS, DHCP, NTP, backups, and high-availability services Participate in incident management, infrastructure improvements, and on-call rotation Maintain documentation and support physical infrastructure in colocation facilities Zentrale Anforderungen Solid hands-on experience with TCP/IP networking Linux

administration Structured technical troubleshooting Wireshark and packet-level analysis essential Knowledge of telecommunications protocols such as SMPP, SS7, SIGTRAN, SCTP, or M3UA (advantage) Familiarity with switching, routing, VLANs, firewalls, VPNs, DNS, and enterprise networking concepts Experience with Cisco, Palo Alto, Proxmox, or comparable technologies (advantage) Exposure to virtualization, storage environments, backup solutions, and high-availability concepts (advantage) Analytical and solution-oriented mindset Fluent English Swiss or EU citizenship (visa sponsorship not available) Analytical thinking Problem solving Team collaboration TCP/IP networking Linux administration Wireshark packet analysis