BO Core CS/IMS DT Engineer – Ericsson (Design Translation & Signaling) | SIS Global | Riyadh, Saudi Arabia

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

Position Summary

Driving advanced back office core engineering, design translation (DT), signaling routing, and Ericsson network integration in Riyadh, Saudi Arabia, SIS Global is actively seeking an experienced BO Core CS/IMS DT Engineer for a permanent full-time professional engagement. In this vital technical operations role, you will take full operational, tactical, and technical ownership of Ericsson CS Core, IMS, and 5G Core SA nodes, core network configuration scripts, routing and analysis tables, and quarterly configuration audits. Bringing robust hands-on expertise in Ericsson systems and core network design translation (previous Ericsson experience is a must), you will empower an elite telecommunications enterprise to achieve uncompromised network availability, secure signaling integrity, and superior telecommunications service delivery. This prestigious career opportunity offers competitive remuneration, regional enterprise exposure, and professional growth within a leading global telecommunications infrastructure and consultancy enterprise.

Detailed Job Description

As a BO Core CS/IMS DT Engineer supporting SIS Global on an on-site professional basis in Riyadh, Saudi Arabia, you will take full operational, tactical, and technical ownership of core network configuration, design translation validation, signaling implementation, and cross-functional engineering collaboration. Your day-to-day responsibilities include managing integration, configuration, and modification of CS Core, IMS, and 5G Core SA nodes, preparing, validating, and reviewing Core Network configuration scripts and Design Translations (DTs), implementing network designs and managing end-to-end signaling routing across Diameter, SIP, and SS7 protocols, configuring MSS, MGW, HLR/HSS, STP, DSC, UDC, and IMS nodes, managing routing and analysis tables including A/B-Number, IMSI, Global Title, and IN Triggering Tables, performing quarterly configuration audits to ensure compliance with approved network designs, monitoring network KPIs, performance, and capacity to recommend improvements, coordinating with cross-functional teams for network integration and service delivery, and interacting directly with recruitment leadership like MElTahawy.

Key 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.

Required Qualifications & Skills

• 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.

Nice-to-Have Skills

• Professional vendor certifications such as Ericsson Certified Associate Core Network or Cisco Certified Network Professional (CCNP).
• Prior professional working experience supporting Tier-1 mobile network operators (such as STC) or large-scale core transformation programs in the GCC.
• Hands-on familiarity with cloud-native core network functions (CNF), containerized 5GC architectures, and automated CI/CD deployment pipelines.
• Experience utilizing enterprise agile tracking and IT service desk platforms (Jira, ServiceNow, Remedy).
• Active participation in 3GPP standards committees, telecommunications user groups, or core engineering forums.

Salary & Working Details

• Salary/Rate: Market Competitive / Enterprise Telecom Engineering Package
• Work Schedule: On-site Professional Operations (Riyadh, Saudi Arabia)
• Contract Duration: Permanent / Full-Time Employment (Riyadh)
• Deadline: Open until filled (Urgent Riyadh BO Core CS/IMS DT Engineer Opening)
• Notice Period: Immediate to 30 Days Preferred

Recruitment Pro Tip

When applying for this BO Core CS/IMS DT Engineer position with SIS Global in Riyadh, ensure your resume explicitly highlights your Ericsson design translation (DT) tenure, HLR/HSS configuration experience, and signaling protocol expertise.