Sr Specialist System Engineering (IMS Voice Core)
Core
Design, architecture, integration, and platform certification of containerized network functions for AT&T's 5G and IMS infrastructure.
Role type
Senior System Engineering Specialist (IMS Voice Core)
Builds
Advanced Mobility Core network functions and Network Services applications (Nokia NAC, NIAM, CNCS, CSCF, S/S, ECSCF) on RedHat OCP.
Domain
Telecommunications, 5G, IP Multimedia Subsystems (IMS), Cloud Native
Deliverable
production ML models | product features | infrastructure
Required skills
Nokia NIAM, Nokia NAC, IMS architecture, SIP/Diameter flows, Nokia CNCS, Nokia NTAS, CSCF, Session Border Controller (SBC), call flow troubleshooting, virtualization, containerization, Infrastructure as Code (IaC), Python/Ansible/Shell/JavaScript/Java, data encryption, Role-based access control, Linux administration, YAML/JSON, CI/CD, performance engineering, alarm analysis
Preferred skills
Telecommunications network architecture, wireless communication protocols, network analysis, application security, AI/ML frameworks, mathematics for AI/ML, data preprocessing
Technologies
RedHat OpenShift (OCP), Nokia Cloudband, Nokia Container Services (NCS), Microsoft Azure, GIT
Responsibilities
Architecture and design of containerized network functions; Integration and platform certification of Nokia applications; Troubleshooting and triage of call flows; Performance engineering and tuning for high availability; Test planning and execution; Alarm treatment and ticket generation.
Seniority
Senior, hands-on IC