Senior Systems Engineer

Enghouse Systems Limited; Göteborgs kommun; Hybrid; SEK 600,633 - 819,045; Full time

Benefits offered by this job

Opportunity for growth and advancement

Great team atmosphere

Innovative work environment

Stability of established company

Job summary

Enghouse Systems Limited in Gothenburg, Sweden is searching for a Senior Systems Engineer to join their expert team. This hybrid position involves ensuring the reliability of the iNode platform and working closely with telecom operator customers.

The ideal candidate should have deep knowledge of telecom protocols, excellent Linux and networking skills, along with hands-on experience with Cisco equipment. This role promises opportunities for growth and a great team atmosphere.

Qualifications

• Deep knowledge of telecom signalling protocols: SIP, SS7, INAP, Diameter, ENUM.
• Experience in Linux networking and firewall configuration.
• Hands-on with Cisco network equipment and MySQL/MariaDB.
• Strong troubleshooting skills in complex systems.

Responsibilities

• Analyse customer needs and design new services.
• Implement and configure platforms in live environments.
• Troubleshoot complex issues across various layers.
• Manage Linux server infrastructure and network equipment.
• Drive continuous optimisation of platform performance.

Skills

Telecom signalling protocols (SIP, SS7, INAP, Diameter, ENUM)

Linux (Rocky Linux / RedHat)

Cisco equipment (switches, routers, ASA firewalls)

MySQL / MariaDB

Troubleshooting skills

Job description

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 teamatmosphere
• 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.