IMS Technical Authority: Lead Core Network & 5G Core

Tech Junction Ltd; Riyadh; On-site; SAR 420,000 - 660,000; Full time

Job summary

Tangent International is seeking a senior IMS Technical Authority in Riyadh to provide technical leadership, governance, and architecture oversight for large-scale IMS platforms, including VoLTE and VoWiFi core services.

You will drive design reviews, ensure SLA compliance, work with vendors and operations, and act as the highest technical escalation point for mission-critical mobile services.

Qualifications

• Extensive experience with IMS core networks.
• Strong SIP signaling expertise.
• Advanced Diameter protocol knowledge.
• Experience with RTP media handling.
• Knowledge of HTTP/REST integration in telecoms.
• Hands-on with CSCFs, SBCs, TAS, HSS/UDM, ENUM, PCRF/PCF.
• Proven high-availability and capacity planning experience.
• Excellent troubleshooting and decision-making skills.
• Strong stakeholder management and communication abilities.

Responsibilities

• Govern IMS architecture, standards, configurations, upgrades, and service integrations.
• Review and approve technical designs for Core IMS platforms and services.
• Oversee architecture involving CSCF, SBC, TAS, HSS/UDM, ENUM, PCRF/PCF.
• Assess risks, impacts, and strategies for network changes.
• Act as highest technical escalation point for IMS incidents and performance issues.
• Ensure platform availability, scalability, resilience, security, and SLA compliance.
• Lead design reviews, governance activities, and architecture validation processes.
• Conduct change-impact assessments and review implementation plans.
• Lead RCA and corrective actions for critical service issues.
• Collaborate with vendors, operations, project teams, and SNOC.
• Support capacity planning and future service evolution.
• Drive continuous improvement across IMS services and platforms.

Skills

IMS core networks

SIP signaling

Diameter protocol

RTP/media handling

HTTP/REST integration

High availability

Performance management

Troubleshooting

Stakeholder management

Architecture governance

Tools

CSCFs (P-CSCF/I-CSCF/S-CSCF)

SBC

TAS

HSS/UDM

ENUM

PCRF/PCF

Job description

Tangent International is seeking a senior IMS Technical Authority in Riyadh to provide technical leadership, governance, and architecture oversight for large-scale IMS platforms, including VoLTE and VoWiFi core services.

You will drive design reviews, ensure SLA compliance, work with vendors and operations, and act as the highest technical escalation point for mission-critical mobile services.