Cellular Device Test Engineer | CompNova | Philadelphia, Pennsylvania, USA

CompNova; Philadelphia (Philadelphia County); On-site; USD 83,000 - 152,000; Full time

Job summary

CompNova in Philadelphia, PA, is seeking an experienced Cellular Device Test Engineer to support testing, certification, validation, and troubleshooting of next-generation wireless devices across LTE, 5G, VoLTE, and VoWiFi. The role requires hands-on lab and field work and close collaboration with chipset vendors and OEMs.

You will perform end-to-end device testing, protocol analysis, and KPI investigations, collect device logs from Android and iOS, and produce technical reports for

Qualifications

• Bachelor's degree in Telecommunications, Electronics, Computer/Electrical Engineering or related field.
• Minimum 7 years of device testing and certification experience.
• Strong knowledge of wireless technologies: 4G LTE, 5G NR, 5G SA/NSA, mmWave.
• Good understanding of VoLTE, VoWiFi, RCS, SMS, MMS.
• Experience with protocol call-flow analysis (RRC, NAS).
• Hands-on testing on Android and iOS devices.

Responsibilities

• Execute lab and field testing for LTE, 5G, VoLTE, VoWiFi, RCS, SMS, and MMS.
• Perform end-to-end device certification and validation activities.
• Analyze signaling procedures and protocol call flows.
• Conduct RRC and NAS message analysis and troubleshooting.
• Collect, analyze, and triage device logs from Android and iOS devices.
• Investigate performance, throughput, mobility, and interoperability issues.
• Use diagnostic tools to perform root cause analysis of device-related problems.
• Support OEM and chipset vendor interactions during issue investigations.
• Validate network and device behavior across SA, NSA, and mmWave deployments.
• Perform data analysis and generate performance insights using visualization tools.
• Produce technical reports and communicate findings to stakeholders.
• Support network and device optimization initiatives.

Skills

7+ years device testing

Wireless technologies knowledge

Protocol analysis

Android & iOS testing

Troubleshooting capabilities

Education

Bachelor’s degree in Telecommunications/Electronics/CE/EE

Tools

QXDM

XCAP

XCAL

Tableau

Databricks

Job description

Job Title: Cellular Device Test Engineer | CompNova | Philadelphia, Pennsylvania, USA

Recruiting Company: CompNova

Job Location: Philadelphia, Pennsylvania, USA

Job Type: Contract (C2C / W2)

Work Arrangement: Onsite (5 Days per Week)

Industry: Telecommunications | Wireless Devices | 4G LTE | 5G NR

Position Summary

CompNova is seeking an experienced Cellular Device Test Engineer to support the testing, certification, validation, and troubleshooting of next-generation wireless devices. The successful candidate will work across lab and field environments performing end-to-end device testing, protocol analysis, performance validation, and issue triage for LTE, 5G, VoLTE, VoWiFi, and messaging services.

Detailed Job Description

As a Cellular Device Test Engineer, you will be responsible for validating mobile devices across various wireless technologies and network scenarios. You will perform protocol analysis, device certification testing, field validation, KPI investigations, and troubleshooting of customer-impacting issues. The role requires strong understanding of LTE and 5G call flows, device logging, protocol debugging, and analytics-driven troubleshooting.

Working closely with chipset vendors, OEMs, network engineering teams, and product stakeholders, you will identify root causes, analyze device behavior, and help ensure high-quality mobile device performance across commercial networks.

Key Responsibilities

• Execute lab and field testing for LTE, 5G, VoLTE, VoWiFi, RCS, SMS, and MMS services.
• Perform end-to-end device certification and validation activities.
• Analyze signaling procedures and protocol call flows.
• Conduct RRC and NAS message analysis and troubleshooting.
• Collect, analyze, and triage device logs from Android and iOS devices.
• Investigate performance, throughput, mobility, and interoperability issues.
• Use diagnostic tools to perform root cause analysis of device-related problems.
• Support OEM and chipset vendor interactions during issue investigations.
• Validate network and device behavior across SA, NSA, and mmWave deployments.
• Perform data analysis and generate performance insights using visualization tools.
• Produce technical reports and communicate findings to stakeholders.
• Support network and device optimization initiatives.

Required Qualifications & Skills

• Bachelor’s Degree or higher in Telecommunications, Electronics, Computer Engineering, Electrical Engineering, or a related discipline.
• Minimum 7 years of device testing and certification experience.
• Strong knowledge of wireless technologies, including:
  • 4G LTE
  • 5G NR
  • 5G SA (Standalone)
  • 5G NSA (Non-Standalone)
  • mmWave
• Good understanding of:
  • VoLTE
  • VoWiFi
  • RCS
  • SMS
  • MMS
• Strong understanding of network architecture and telecom protocols.
• Experience with protocol call-flow analysis involving:
  • RRC
  • NAS
• Hands-on experience testing both Android and iOS devices.
• Experience collecting and analyzing device logs.
• Strong troubleshooting and issue triage capabilities.

Required Tools & Technologies

Device Logging & Analysis

• XCAP
• XCAL
• QXDM

Analytics & Reporting

• Tableau
• Databricks
• Cloud-based data analytics platforms

Testing Domains

• Device Certification
• Field Testing
• Lab Testing
• Protocol Analysis
• Throughput Validation
• Network Performance Testing

Nice-to-Have Skills

• Experience supporting Tier-1 mobile operators.
• Knowledge of 5G advanced features and mobility optimization.
• Experience with carrier acceptance testing processes.
• Familiarity with automation frameworks and scripting.
• Experience working directly with chipset vendors such as Qualcomm.
• Exposure to wireless device performance benchmarking.

Ideal Candidate Profile

• The ideal candidate is a senior wireless device testing professional with strong expertise across:
  • LTE & 5G Device Testing
  • Android & iOS Validation
  • Protocol Analysis
  • RRC/NAS Troubleshooting
  • QXDM Log Analysis
  • VoLTE & VoWiFi Testing
  • Device Certification Programs
  • OEM & Chipset Collaboration