IMS Support Engineer

Location: Dallas, TX

About the role

We are looking for an experienced IMS Support Engineer with strong expertise in Telecom, IMS/VoLTE, LTE/5G Core networks, and Nokia SBC. The ideal candidate will have hands-on experience troubleshooting production issues, handling emergency support cases, performing root cause analysis, and working with telecom protocols and cloud/virtualization technologies.

Responsibilities

• Troubleshoot and resolve complex issues within Telecom and IMS (4G/5G/LTE) Core networks.
• Handle customer cases, including emergency and critical support activities.
• Perform Root Cause Analysis (RCA) and recommend corrective actions.
• Troubleshoot and support IMS VoLTE environments, particularly Nokia SBC.
• Perform LTE/5G end-to-end system validation, performance testing, and KPI analysis.
• Analyze call flows and troubleshoot issues involving SIP, Diameter, and H.248 protocols.
• Work with TLS, IPsec, and RTP for secure communication and media troubleshooting.
• Use Wireshark and protocol analyzer tools to capture and analyze network traffic and message flows.
• Troubleshoot issues in Linux-based environments.
• Develop Shell/Python scripts to automate repetitive troubleshooting and operational tasks.
• Support telecom platforms deployed on Kubernetes, VMware, and OpenStack environments.
• Work with Nokia technologies including CBIS, CBAM, and NCS.
• Collaborate with internal teams and customers to identify issues and drive them through resolution.

Requirements

• Strong experience in Telecom and IMS Core networks.
• Hands-on experience with IMS/VoLTE and Nokia SBC.
• Strong understanding of 4G/LTE and 5G networks.
• Excellent knowledge of: SIP, Diameter, H.248, RTP, TLS, IPsec.
• Strong troubleshooting and RCA skills.
• Experience with Wireshark/protocol analyzers and message-flow analysis.
• Strong Linux administration/troubleshooting skills.
• Scripting experience with Shell and/or Python.
• Knowledge of Kubernetes, VMware, and OpenStack.
• Familiarity with CBIS, CBAM, and NCS.
• Strong communication and customer-support skills.

Skills

• Experience supporting production telecom/IMS environments.
• Experience handling critical/emergency customer cases.
• Ability to analyze complex network traces and identify root causes.
• Strong automation mindset with the ability to convert manual processes into scripts.
• Ability to work effectively in a fast-paced customer-facing support environment.