Cellular Test Engineer (RAN / Device Testing)

Required Qualifications

• 3–6+ years of hands-on experience in cellular system testing, mobile protocol verification, or RAN integration.
• Solid understanding of 3GPP specifications (5G NR Release 15/16/17, LTE Advanced Pro).
• Comprehensive understanding of RAN architecture (gNB, eNB, CU/DU split, Open RAN / O-RAN concepts).
• Strong knowledge of L1/L2/L3 protocol procedures (Random Access, Cell Selection/Reselection, Handover/Mobility, Beamforming, Carrier Aggregation, Dual Connectivity [EN-DC/NR-DC]).
• Hands-on experience with wireless test sets and network emulators (e.g., Keysight UXM, Rohde & Schwarz CMX500/CMW500, Anritsu MT8821C/MT8000A, Spirent).
• Proficiency with log analysis and diagnostic tools (e.g., Qualcomm QXDM/QCAT, Shannon DM, Wireshark, Accuver XCAL/XCAP, TEMS Investigation).
• Spectrum analyzers, power meters, RF attenuator matrices, and RF switches.
• Proficiency in Python for test automation, log parsing, and instrument control (SCPI, VISA).
• Experience with version control systems (Git) and bug-tracking tools (Jira).

Education

• Bachelor's or Master’s degree in Computer Science, Computer or Electrical Engineering, Mathematics, or a related field.

Thanks & Regards

RAJU REDDY |Sr. Team Manager

CIS Technology Inc

Plano, TX 75074

Direct: 678-825-9254

raju .s@cis-tec.com