IMS​/xCSCF Integration Engineer – 4G​/5G Core; Remote

We are looking for an experienced IPTEL CFX Deployment & Integration Engineer to support IMS (xCSCF) 4G/5G core network deployments
. This is a professional services role focused on integration, testing, and production rollout of IMS network functions in live operator environments.

This position requires strong hands‑on deployment expertise, deep understanding of IMS/5G core architecture, and the ability to execute within strict Methods of Procedure (MoP) and Statements of Work (SOW).

• Perform deployment and integration of Nokia CFX / xCSCF network nodes in 4G/5G IMS environments
• Execute ATP (Acceptance Test Procedures), new software releases, and feature validation
• Work from detailed Low-Level Designs (LLD) including:
• CIQ
• DNP
• TPD (Common & DUSpec)
• Plato
• Prepare and execute Method of Procedure (MoP) documentation
• Deploy solutions based on FOA/FSA-created MOPs or greenfield deployment plans
• Collaborate closely with IMS Solution Architects (SA) to validate and implement end‑to‑end solutions
• Participate in lab training with FOA/FSA teams prior to production deployment
• Perform MOP authoring and second‑level MOP testing for IMS / SDM / 5G core
• Support lab maintenance and troubleshooting
• Troubleshoot and resolve issues in both lab and production environments
• Ensure production‑grade capacity, availability, and stability through accurate documentation and execution
• Support maintenance windows during introduction of new network functions (NFs)

• Strong hands‑on experience with Nokia IMS core
  , specifically CFX / xCSCF nodes
• Experience in 4G/5G Core & IMS network deployments
• Proven background in deployment, integration, and acceptance testing of telecom core nodes
• Experience working with:
• CIQ, DNP, TPD, Plato
• LLD and MoP documentation
• Experience performing software upgrades and feature testing in live telecom networks
• Strong understanding of IMS, SDM, and 5G core network architecture
• Ability to follow and execute within strict SOW-defined scopes
• Experience working in operator lab and production environments
• Strong troubleshooting skills in telecom core networks
• Willingness to work during maintenance windows

• Experience working with FOA/FSA teams
• Prior experience with greenfield IMS/5G deployments
• Exposure to network performance, stability, and capacity optimization