Telecom & Infrastructure Engineer

03 September 2026
80 – 100%
Permanent position
German (Fluent), English (Fluent)
Zürich

About the job

An internationally active technology company develops and operates business-critical messaging and communication platforms. To expand the Infrastructure & Network Engineering team, we are looking for an experienced individual with a focus on telecommunications connectivity, networking, and Linux infrastructure.

Your Responsibilities

Operation and maintenance of SMPP connections with customers, carriers, and mobile network operators
Operation and support of SS7 and SIGTRAN connections with external telecommunications partners
Analysis and resolution of faults at protocol and connectivity level
Support with onboarding, testing, and activation of new SMPP and SS7/SIGTRAN connections
Troubleshooting SMPP, SCTP, M3UA, and other communication and session issues
Operation and further development of data centre, office, and site networks based on Cisco technologies
Administration of firewalls, VPNs, VLANs, NAT, and network segmentation
Support with BGP routing, internet connectivity, IP address management, and external partner connections
Analysis of routing, latency, packet loss, DNS, and firewall issues using tools such as Wireshark
Operation and further development of virtualised infrastructures with Proxmox, Linux, Ceph, and ZFS
Administration and troubleshooting of Linux systems as well as central infrastructure services such as DNS, DHCP, NTP, and certificates
Support with backup, restore, high availability, and disaster recovery
Contribution to documentation and on-call duty

Our Requirements

Completed training or further education in computer science, system engineering, or networking, e.g. computer scientist EFZ, ICT system and network technician, or comparable qualification
Good knowledge of TCP/IP and modern network and communication concepts
Practical experience with Linux systems and structured technical troubleshooting
Experience with Wireshark or comparable packet analysis tools
Ideally experience in the telecommunications environment as well as with SMPP, SS7, or SIGTRAN
Knowledge of SCTP, M3UA, or comparable protocols is an advantage
Good knowledge of switching, routing, VLAN, NAT, DNS, and network segmentation
Experience with firewalls and VPNs, ideally Cisco and/or Palo Alto
Knowledge of BGP and internet edge routing is an advantage
Experience with virtualisation solutions such as Proxmox, VMware, or comparable technologies
Knowledge of storage technologies such as Ceph or ZFS as well as experience with server hardware is an advantage
Independent, solution-oriented, and structured working style
Strong team and communication skills as well as high personal responsibility
Very good English skills; German skills are a plus
Residence in Switzerland

Your Prospects

Technically demanding tasks at the interface of telecommunications, network, and infrastructure
Diverse technology environment with SMPP, SS7/SIGTRAN, IP networking, firewalls, and Linux
High scope for design and responsibility in a small, specialised team
Opportunity for professional development towards telecom engineering, network engineering, or service operations
Modern working environment and high-quality technical equipment
Flexible working model with home office options depending on operational possibilities
Permanent employment with 80-100% workload and paid on-call rotation

Categories:

IT / Telecommunications, Business- / Requirement Analyst / Process Management, Networks / Security / Hardware