Senior Systems Engineer

We are looking for an experienced Senior Systems Engineer to join our small, highly skilled team in Gothenburg. You will be the go-to person for everything from signalling protocol expertise to infrastructure operations, working in direct and daily contact with our telecom operator customers. You will play a central role in keeping our iNode platform running reliably and evolving to meet customer needs. This is a hybrid role based out of our Gothenburg, Sweden office, reporting to the Manager, Operations . Responsibilities: • Analyse customer needs and design new services in close cooperation with customers, suppliers and the technical team. • Implement, configure and test new platforms and services in live operator environments. • Troubleshoot complex issues across signalling, networking and infrastructure layers. • Configure and maintain Linux-based server infrastructure including networking, routing, firewalls and VPN tunnels. • Manage and operate network equipment: Cisco switches, routers and ASA firewalls. • Install and operate physical infrastructure: servers, cabling, fiber, power supplies and UPS. • Monitor systems using OP5/Nagios and manage backup/restore processes (Bacula). • Participate in on-call duty rotation for 24/7 operational support. • Drive continuous optimisation of platform performance and reliability. Qualification and Experience: • Deep knowledge of telecom signalling protocols: SIP, SS7, INAP, Diameter, ENUM. • Linux: Rocky Linux / RedHat — networking, routing, firewall configuration, security hardening and bash scripting. • CLI configuration of VLANs and VPN tunnels. • Hands-on experience with Cisco switches, routers and ASA firewalls. • MySQL / MariaDB: SQL query design and optimisation. • Physical infrastructure: installation and operation of servers, network equipment and cabling. • Strong troubleshooting skills in large, complex, mission-critical systems. • Comfortable working directly with customers under pressure. Good to Have: • Apache / Tomcat, SSL configuration. • OpenVPN, SMTP, SNMP/MIB. • OP5 Monitor (Nagios), Bacula backup/restore. • Xen virtualisation. • Perl scripting. What we offer Opportunity for growth and advancement Great team atmosphere Opportunity to leave your mark through the delivery of innovative ideas to the team Work for a stable and established company About Us: Enghouse Networks Sweden develops and operates IN and SIP/ENUM routing applications for telecom operators. We are forward-thinking specialists providing cost-effective, scalable and future-proof solutions which include rapid development, adaptation, implementation and 24/7 supervision and Managed Services. At the core of all our telecom solutions is our in-house developed iNode system. #LI-EN8 #LI-Onsite