Senior IMS Core Engineer

Connect44 is a company that truly values its employees and fosters a culture of collaboration and innovation.

Position Overview

We are looking for a determined and team-oriented person to join our team as a Senior IMS Core Engineer

Available Positions: 1 position

Job type: Permanent

Job Ref. Number: FSE 24.08.2026

Overall Purpose

We are looking for an experienced Senior IMS Core Engineer to support the delivery, migration, and operational assurance of large-scale IMS Core and VoLTE environments.

The role requires strong hands-on technical expertise, combined with the ability to lead complex network activities, troubleshoot critical service issues, and coordinate across engineering, operations, customer, and vendor teams.

In this capacity, the senior engineer will primarily focus on supporting large-scale IMS network deployments and VoLTE implementations across a global customer base.

Key Accountabilities

• Lead and support IMS Core and VoLTE migrations, deployments, upgrades, and network changes
• Provide technical leadership across IMS, SBC, HSS/HLR and related Core Network functions
• Support VoLTE and VoLTE roaming implementation and service assurance
• Perform advanced troubleshooting and root cause analysis using SIP, SDP, RTP and Diameter signaling
• Lead resolution of critical incidents and technical escalations
• Ensure service continuity, high availability, and operational readiness during network changes
• Support feature verification, interoperability testing, and pre/post-deployment validation
• Review implementation procedures, rollback plans, and technical documentation
• Coordinate activities across internal teams, customers, and technology vendors
• Identify opportunities for service improvement, process optimization, and automation

Required Experience

• Strong hands-on experience with IMS Core and VoLTE technologies
• Experience with IMS migrations, deployments, upgrades, and production support
• Strong knowledge of SIP, Diameter, SBC, HSS/HLR and IMS call flows
• Proven troubleshooting, incident management, and root cause analysis skills
• Experience working in large-scale, highly available telecom environments
• Experience with major IMS vendors such as Huawei, Nokia, Ericsson, Mavenir, or equivalent
• Strong communication, technical leadership, and stakeholder management skills