5G Device & Protocol Engineer

Job Type: Contract
Domain: Telecom / Wireless
Experience: 5+ years preferred

We are seeking an experienced 5G Device & Protocol Engineer with strong hands-on expertise in LTE/5G NR performance analysis, VoNR/IMS call flows, protocol-level troubleshooting, KPI automation, and live-network validation.

Key Responsibilities

• Analyze 5G NR/LTE network performance and perform root-cause analysis (RCA).

• Troubleshoot VoNR, VoWiFi, IMS, and SIP call flows end-to-end.

• Perform protocol-level debugging across RRC, NAS, SIP, IMS, PDCP, RLC, and HARQ.

• Analyze key performance indicators including DL/UL throughput, latency, jitter, packet loss, BLER, and MCS.

• Perform log and trace analysis using QXDM, QCAT, Wireshark/PCAP, XCAL/XCAP, or similar tools.

• Validate device and network performance in live-network and field environments.

• Develop KPI reporting and automation using Python, SQL, Tableau, Power BI, or similar tools.

• Identify network/device performance issues, conduct RCA, and provide recommendations for optimization.

• Collaborate with device, modem, network, and engineering teams to resolve protocol and performance issues.

Required Skills

• Strong knowledge of 5G NR/LTE architecture and protocol stack.

• Hands-on experience with VoNR, IMS, SIP, and end-to-end call-flow troubleshooting.

• Strong experience in protocol debugging, KPI analysis, log analysis, and network RCA.

• Experience with QXDM, QCAT, Wireshark/PCAP, XCAL/XCAP, or equivalent tools.

• Strong understanding of RRC, NAS, PDCP, RLC, HARQ, SIP, and IMS protocols.

• Experience with Python scripting/automation and network analytics.

• Experience analyzing throughput, latency, BLER, MCS, packet loss, and other 4G/5G KPIs.

• Strong troubleshooting, analytical, and communication skills.
  
  

   

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  **Best way to reach me through email**

  Tarak K

  Business Development Manager

  Astir IT Solutions Inc.

  50 Cragwood Rd., Suite 219,South Plainfield, NJ 07080

  Mobile :  | Ext - 798

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  50 Cragwood Rd, Suite # 219, South Plainfield, NJ 07080 
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