Ericsson Core CS/IMS DT Engineer — On-Site Riyadh

SIS Global; Riyadh; On-site; SAR 350,000 - 600,000; Full time

Job summary

SIS Global in Riyadh, Saudi Arabia seeks a BO Core CS/IMS DT Engineer to take ownership of CS Core, IMS, and 5G Core SA node configuration, design translation validation, and signaling implementation. The role demands hands-on Ericsson systems experience and scripting to support end-to-end network integration.

The position is on-site and permanent, offering competitive remuneration and professional growth within a leading global telecoms infrastructure and consultancy enterprise.

Qualifications

• Bachelor's degree in Telecommunications Engineering, Electronics Engineering, Computer Engineering, or a related technical discipline.
• Strong hands-on operational experience with Ericsson CS Core and IMS enterprise networks.
• Recognized expertise in Core Network Design Translation (DT) and advanced configuration scripting.
• Excellent working knowledge of signaling protocols including SIGTRAN, Diameter, SIP, SS7, M2PA, and M3UA.
• Solid practical experience configuring MSS Blade Clusters, MGW, HLR/HSS, STP, DSC, and 5G Core SA nodes.
• Deep practical familiarity with MNP, CSFB, IN Triggering Tables, and end-to-end signaling routing architectures.
• Experience in HLR/HSS parameter configuration including APNs, EsmContext, EsmProfile, and Realm routing.
• Knowledge of Nb/IP, A/IP, IuCs/IP interfaces and GMSR traffic filtering mechanisms.
• Strong analytical troubleshooting capabilities and automation scripting skills.
• Previous professional working experience with Ericsson systems is mandatory.
• Mandatory legal work authorization and physical availability for professional on-site operations in Riyadh, Saudi Arabia.

Responsibilities

• Manage integration, configuration, and modification of CS Core, IMS, and 5G Core SA nodes across enterprise telecommunications environments.
• Prepare, validate, and review Core Network configuration scripts, parameter changes, and Design Translations (DTs).
• Implement robust network designs and manage end-to-end signaling routing across Diameter, SIP, and SS7 protocol stacks.
• Configure, provision, and maintain Mobile Softswitch (MSS), Media Gateway (MGW), HLR/HSS, STP, DSC, UDC, and IMS nodes.
• Administer complex routing and analysis tables including A/B-Number routing, IMSI analysis, Global Title translation, and IN Triggering Tables.
• Execute rigorous quarterly configuration audits to ensure strict compliance with approved baseline network designs and security standards.
• Monitor network KPIs, traffic performance, and capacity metrics to formulate actionable network optimization recommendations.
• Coordinate seamlessly with cross-functional transmission, RAN, and OSS teams for smooth network integration and service delivery.
• Interact directly with recruitment leadership for project alignment.

Skills

Ericsson CS Core

IMS

DT design translation

Signaling protocols

HLR/HSS configuration

MSS/MGW configuration

5G Core SA

Automation scripting

On-site Riyadh

Education

Bachelor's degree in Telecommunications Engineering

Tools

Jira

ServiceNow

Remedy

Job description

SIS Global in Riyadh, Saudi Arabia seeks a BO Core CS/IMS DT Engineer to take ownership of CS Core, IMS, and 5G Core SA node configuration, design translation validation, and signaling implementation. The role demands hands-on Ericsson systems experience and scripting to support end-to-end network integration.

The position is on-site and permanent, offering competitive remuneration and professional growth within a leading global telecoms infrastructure and consultancy enterprise.