BO Core CS/IMS DT Engineer (Ericsson Core, Design Translation & 5G Core SA) | SISGlobal | Riyadh, Saudi Arabia

SISGlobal; Riyadh; On-site; SAR 400,000 - 600,000; Full time

Job summary

SISGlobal seeks a BO Core CS/IMS DT Engineer to lead Ericsson core network design translation, scripting, and signaling integration on-site in Riyadh, Saudi Arabia. You will own configurations across CS Core, IMS, and 5G core SA nodes, ensuring end-to-end signaling and design integrity.

Required are Ericsson CS Core/IMS experience, DT and scripting skills, and strong knowledge of Diameter/SIP/SS7. This on-site role offers competitive compensation and global exposure.

Qualifications

• Bachelor’s degree in a telecom or related technical field.
• Prior professional experience with Ericsson CS Core and IMS networks.
• Strong DT and scripting for core network configurations.
• Knowledge of signaling protocols: SIGTRAN, Diameter, SIP, SS7, M2PA, M3UA.
• Experience with MSS Blade Cluster, MGW, HLR/HSS, STP, DSC, and 5G Core SA.
• Familiarity with MNP, CSFB, IN Triggering Tables, and E2E signaling routing.
• On-site Riyadh work eligibility and legal work authorization.

Responsibilities

• Manage CS Core, IMS, and 5G Core SA node integration and configuration.
• Prepare and review core network scripts and DTs.
• Implement network designs and manage signaling routing (Diameter, SIP, SS7).
• Configure HLR, HSS, MSS, MGW, STP, DSC, UDC, and IMS elements.
• Analyze routing tables: B-Number, A-Number, IMSI, Global Title.
• Perform configuration audits and ensure design compliance.
• Monitor KPIs and capacity; propose improvements.
• Coordinate with cross-functional teams for service delivery.

Skills

Ericsson CS Core

IMS networks

Core Network DT

Configuration scripting

SIGTRAN

Diameter

SIP

SS7

MNP & CSFB

Troubleshooting & auditing

Education

Bachelor’s degree in Telecommunications/Electrical/CS

Tools

MSS Blade Cluster

MGW

HLR/HSS

STP

DSC

UDC

5G Core SA

Job description

Position Summary

Driving advanced core network design translation, Ericsson CS Core and IMS configuration, and network integration in Riyadh, Saudi Arabia, SISGlobal is actively seeking an experienced BO Core CS/IMS DT Engineer for a permanent full-time professional engagement. In this vital technical leadership role, you will take full operational, tactical, and technical ownership of Ericsson core network configuration, design translation (DT), signaling routing, and 5G Core SA node integration. Bringing mandatory prior professional experience with Ericsson systems, you will empower an elite telecommunications enterprise to achieve uncompromised core network reliability, secure signaling exchange, and superior subscriber connectivity. This prestigious career opportunity offers competitive remuneration, international enterprise exposure, and professional growth within a leading global telecommunications engineering enterprise.

Detailed Job Description

As a BO Core CS/IMS DT Engineer supporting SISGlobal on an on-site professional basis in Riyadh, Saudi Arabia, you will take full operational, tactical, and technical ownership of core network design translation, configuration scripting, signaling analysis, and cross‑functional network integration. 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 and maintaining HLR, HSS, MSS, MGW, STP, DSC, UDC, and IMS nodes, handling complex routing and analysis tables including B‑Number, A‑Number, IMSI, and Global Title analysis, performing network configuration audits and ensuring compliance with approved designs, monitoring network KPIs, performance, and capacity to recommend improvements, coordinating with cross‑functional teams for seamless service delivery, and interacting directly with recruitment leads like Omnia El‑shamy.

Key Responsibilities

• Manage integration, configuration, and modification of Circuit Switched (CS) Core, IP Multimedia Subsystem (IMS), and 5G Core SA nodes.
• Prepare, validate, and review complex Core Network configuration scripts and Design Translations (DTs).
• Implement advanced network designs and manage end‑to‑end signaling routing across Diameter, SIP, and SS7 protocol stacks.
• Configure and maintain HLR, HSS, MSS Blade Cluster, MGW, STP, DSC, UDC, and IMS network elements.
• Handle intricate routing and analysis tables, including B‑Number, A‑Number, IMSI, and Global Title analysis.
• Perform network configuration audits and enforce strict compliance with approved architectural designs.
• Monitor network KPIs, performance metrics, and traffic capacity to recommend proactive improvements.
• Coordinate proactively with cross‑functional engineering teams for network integration and high‑availability service delivery.

Required Qualifications & Skills

• Bachelor’s degree in Telecommunications Engineering, Electrical Engineering, Computer Science, or related technical discipline.
• Mandatory prior professional working experience with Ericsson CS Core and IMS networks.
• Strong, demonstrable operational expertise in Core Network Design Translation (DT) and configuration scripting.
• Comprehensive working knowledge and practical proficiency in signaling protocols including SIGTRAN, Diameter, SIP, SS7, M2PA, and M3UA.
• Deep practical experience with MSS Blade Cluster, MGW, HLR/HSS, STP, DSC, and 5G Core SA architectures.
• Solid practical grasp of Mobile Number Portability (MNP), CSFB, IN Triggering Tables, and E2E signaling routing.
• Exceptional analytical troubleshooting capabilities, network audit skills, and professional stakeholder communication.
• 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/Professional or Cisco Certified Internetwork Expert (CCIE).
• Prior professional working experience supporting Tier‑1 mobile network operators in the GCC region (e.g., STC, Mobily, Zain).
• Hands‑on familiarity with network automation scripting (Python, Ansible) for configuration generation and audit validation.
• Experience utilizing enterprise agile tracking and collaboration platforms (Jira, Confluence, ServiceNow).
• Active participation in telecommunications engineering standards committees, 3GPP working groups, or core network user forums.

Application Information

• Recruiter: SISGlobal Recruitment Division
• Contact Name: Omnia El‑shamy (Global Recruitment Lead)
• Email: [e-mail]
• Phone:
• Company Website: https://www.sis.net.sa
• Salary/Rate: Market Competitive / Enterprise Telecom Engineering Executive Package
• Work Schedule: On‑Site Professional Operations (Riyadh, Saudi Arabia)
• Deadline: Open until filled (Urgent Riyadh BO Core Engineer Opening)
• Notice Period: Immediate to 30 Days Preferred
• Contract Duration: Permanent / Full‑Time Employment (Riyadh)

Recruitment Pro Tip

When applying for this BO Core CS/IMS DT Engineer position through SISGlobal, ensure your resume explicitly highlights your Ericsson Design Translation tenure, SIGTRAN/Diameter signaling expertise, and 5G Core SA node configuration experience.