Associate Principal Engineer - 5G Network Testing and Protocol Validation

Associate Principal Engineer, 5G, RRC,QXDM

Company Description

👋🏼We're Nagarro.

We are a Digital Product Engineering company that is scaling in a big way! We build products, services, and experiences that inspire, excite, and delight. We work at scale across all devices and digital mediums, and our people exist everywhere in the world (18,500+ experts across 40 countries, to be exact). Our work culture is dynamic and non-hierarchical. We're looking for great new colleagues. That's where you come in!

Job Description

REQUIREMENTS 

• Total experience 9+ years.
• Strong experience in 5G Network Testing, Protocol Validation, and End-to-End Telecom Testing.
• Hands-on expertise in 5G L2/L3 protocol analysis including RRC, NAS, MAC, and RLC layers.
• Strong experience using QXDM for protocol tracing, log analysis, debugging, and issue investigation.
• Experience in End-to-End testing of 5G NTN (Non-Terrestrial Network) solutions including test planning and execution.
• Strong understanding of 5G network architecture, call flows, procedures, and protocol stack behavior.
• Hands-on experience with test setup preparation, execution, and troubleshooting in telecom lab environments.
• Experience working with UE emulators such as Viavi and Keysight for protocol and interoperability testing.
• Experience identifying automation opportunities and driving telecom test automation initiatives.
• Strong analytical and troubleshooting skills for failure analysis and root cause identification.
• Experience coordinating with cross-functional teams and mentoring junior engineers.
• Excellent communication, stakeholder management, and technical leadership skills.

RESPONSIBILITIES:

• Plan, design, and execute End-to-End testing activities for 5G NTN solutions and deployments.
• Perform protocol-level analysis and troubleshooting across L3/L2 layers including RRC, NAS, MAC, and RLC.
• Analyze QXDM logs to investigate network issues, protocol failures, and performance bottlenecks.
• Develop and drive test strategies for NTN-based network validation and certification activities.
• Execute test cases, analyze failures, perform root cause analysis, and track defect resolution.
• Prepare, configure, and maintain telecom test environments and test setups.
• Utilize tools such as Viavi and Keysight for UE emulation, protocol validation, and interoperability testing.
• Identify automation opportunities and contribute to the development of automated test frameworks and test suites.
• Collaborate with development, integration, and system engineering teams to resolve complex technical issues.
• Provide technical guidance and mentoring to junior team members.
• Prepare test reports, validation summaries, and quality metrics for stakeholders.
• Support continuous improvement initiatives to enhance test coverage, efficiency, and product quality.

Qualifications

Bachelor’s or master’s degree in computer science, Information Technology, or a related fields

Experience Level

Mid Level