Mobile Packet Core Engineer

Giesecke+Devrient

. Operate and maintain IP and mobile packet core networks .

Posted 10/27/2026full-timeSant Joan Despí • SpainMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in operating and maintaining IP and mobile packet core networks, with a strong focus on incident management, service requests, and SLA compliance. Proficient in troubleshooting, network integration, and supporting customer projects while ensuring high availability and performance across critical infrastructures.

Highest-signal resume keywords

IP Network ManagementDiameter LTE SignallingLinux OS (CentOS)Cloud Services (AWS, Azure)Telecoms Technologies

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

IP NetworksVLANsRouting FundamentalsBGPIPSEC VPNWiresharkMySQLPostgreSQLVirtualisation TechnologiesContainerisation Technologies

Soft Skills

CollaborationTroubleshootingDocumentation

Tools & Technologies

DockerVMwareGTP v1/v2SIPDRA/STPHSS/HLRP-GWOCSPCRF

Certifications & Qualifications

Telecoms QualificationsElectronic QualificationsIP Network Qualifications

Industry Keywords

Mobile Roaming ArchitectureSignalling InterconnectGRX/IPX Providers2G/3G Networking4G LTE5G Technologies

Tech Stack

Tools & technologies

AWSAzureCloudDockerLinuxMySQLPostgresSwitchingVMware

About the role

Key responsibilities & impact

Operate and maintain IP and mobile packet core networks
Manage incidents, service requests, changes and problems
Support customer projects, deployments and network integration
Conduct troubleshooting and escalate to R&D when required
Maintain accurate documentation and ensure SLA compliance
Collaborate with NOC and cross-functional teams globally
Support reporting, monitoring and service improvement efforts
Deploy and support mobile core and IP network services
Ensure availability and performance across critical infrastructures
Run G+D’s network and support new customer projects, network deployments and troubleshooting

Requirements

What you’ll need

Formal telecoms/electronic or IP Network qualifications or equivalent experience gained through previous roles
Solid understanding with practical hands-on experience of IP networks, VLANs and routing fundamentals
High level of English is mandatory
Knowledge of Diameter LTE Signalling (S6a, S5, S8), RADIUS, Diameter Gy/Gx, GTP v1/v2, SIGTRAN, SCCP and SIP
Knowledge of IP routing and switching (Layer 2 and Layer 3), BGP, IPSEC VPN and Wireshark traces
Knowledge of Linux OS, especially CentOS
Knowledge of MySQL and PostgreSQL databases
Knowledge of virtualisation and containerisation technologies, including AWS, Azure, VMware and Docker
Knowledge of DRA/STP, HSS/HLR, P-GW, OCS and PCRF platforms
Understanding of mobile roaming architecture, signalling interconnect and GRX/IPX providers
Knowledge of 2G/3G networking, 4G LTE and 5G technologies
Experience working with a range of telecoms technologies
Understanding/experience of GRX and IPX networks
Technical knowledge of maintaining on-premises equipment and cloud services
Experience deploying and maintaining production infrastructure for high uptime and reliability

Benefits

Comp & perks

Equal Opportunity Employer and LGBT+ friendly
Continuous training, coaching, and talent development programs
Flexible compensation (transport tickets, training, private insurance)
Flexible working hours
Option for remote work with 3 days of remote work
Global collaboration opportunities
Flat hierarchies and a people-oriented environment