Senior 5G RAN & O-RAN Protocol Test Engineer | LTTS | Bangalore

LTTS; Bengaluru; On-site; INR 1,800,000 - 2,400,000; Full time

Job summary

LTTS is seeking a Senior 5G RAN & O-RAN Protocol Test Engineer in Bangalore to lead protocol validation across CU/DU/RU nodes. You will architect, execute, and automate testing suites, validate RRC/PDCP/RLC/MAC/PHY layers, and perform deep log analysis.

You will build automated tests in Python and Robot Framework, integrate with CI/CD, and collaborate with global teams and vendors to ensure high reliability and low latency networks. Training and growth opportunities are provided.

Qualifications

• Bachelor’s degree in Telecommunications Engineering, Electronics Engineering, Computer Science, or related discipline.
• 8+ years of hands‑on wireless telecom testing and protocol validation.
• Experience with 5G NR RAN testing and Open RAN technologies.
• Knowledge of CU/DU/RU architectures and LTE/5G call flows.

Responsibilities

• Own protocol test execution, log analysis, automation framework maintenance, and 5G/LTE call flow verification.
• Validate RRC, PDCP, RLC, MAC, and PHY layers; debug complex protocol issues.
• Develop automated test scripts using Python and Robot Framework.
• Collaborate with global teams and vendors; support CI/CD pipelines.
• Maintain test docs, defects, and validation metrics.

Skills

5G NR RAN testing

Open RAN / O-RAN

Python

Robot Framework

Log analysis

CI/CD integration

Test automation

Communication

Team collaboration

Education

Bachelor’s degree in Telecommunications / Electronics / CS

Tools

Jenkins

GitLab CI

Job description

Position Summary:

Driving advanced wireless telecommunications testing, 5G NR protocol validation, and Open RAN architecture verification in Bangalore, LTTS is actively seeking an accomplished Senior 5G RAN & O-RAN Protocol Test Engineer for a permanent full-time professional engagement. In this vital technical testing role, you will architect, execute, and automate comprehensive protocol validation suites across CU, DU, and RU network nodes. Bringing 8+ years of progressive professional experience in wireless telecom testing, you will empower next-generation network operators to achieve uncompromised signal reliability, low latency, and protocol compliance. This prestigious career opportunity offers competitive remuneration, high technical visibility, and professional growth within a premier global engineering services and technology solutions enterprise.

Detailed Job Description:

As a Senior 5G RAN & O-RAN Protocol Test Engineer supporting LTTS in Bangalore, you will take full operational, tactical, and technical ownership of protocol test execution, log analysis, test automation framework maintenance, and 5G/LTE call flow verification. Your day-to-day responsibilities include validating RRC, PDCP, RLC, MAC, and PHY layers, debugging complex protocol anomalies using deep log analysis, and building automated test suites utilizing Python and Robot Framework. You will operate in a collaborative enterprise R&D environment while partnering closely with global wireless engineering squads and equipment vendors. Furthermore, you will manage application requirements by submitting your updated resume via direct email to Avinash C at [e-mail] or contacting via phone at 6362881280.

Key Responsibilities:

• Spearhead rigorous end-to-end 5G NR and LTE protocol testing across Centralized Unit (CU), Distributed Unit (DU), and Radio Unit (RU) architectures.
• Validate and verify air-interface and inter-layer protocols including RRC, PDCP, RLC, MAC, and PHY layers.
• Perform advanced protocol log analysis, real-time message tracing, and root-cause debugging of complex signaling anomalies.
• Design, develop, maintain, and execute automated test scripts and frameworks utilizing Python and Robot Framework.
• Execute comprehensive end-to-end system testing, call flow verification, and mobility procedure evaluations across wireless networks.
• Integrate automated test suites into continuous integration and continuous deployment (CI/CD) pipelines.
• Collaborate closely with software developers, system architects, and test leads during product release cycles.
• Maintain meticulous test documentation, defect logs, test case repositories, and validation metric reports.

Required Qualifications & Skills:

• Bachelor’s degree in Telecommunications Engineering, Electronics Engineering, Computer Science, or related technical discipline.
• Minimum of 8+ years of progressive professional hands-on experience in wireless telecommunications testing and protocol validation.
• Strong, demonstrable operational expertise in 5G NR RAN protocol testing and Open RAN / O-RAN technologies.
• Comprehensive working knowledge and practical proficiency in CU/DU/RU architecture and LTE/5G call flows and procedures.
• Deep practical experience in layer-2 and layer-3 protocol validation (RRC, PDCP, RLC, MAC, PHY) and log debugging.
• Solid practical grasp of test automation framework development and maintenance utilizing Python or Robot Framework.
• Exceptional analytical problem-solving aptitude, technical documentation skills, and professional communication capabilities.
• Mandatory legal work authorization and physical availability for professional operations in Bangalore, India.

Nice-to-Have Skills:

• Specialized professional experience with vRAN, cloud-native RAN, and multi-vendor O-RAN interoperability testing.
• Hands-on familiarity with CI/CD toolchains (Jenkins, GitLab CI) and automated test orchestration.
• Prior professional working experience in top-tier telecom equipment manufacturers, Tier-1 operators, or R&D engineering centers.
• Experience utilizing enterprise IT service management (ITSM) ticketing platforms (ServiceNow, Jira) for bug tracking.
• Active participation in 3GPP standardization discussions or open-source O-RAN software communities.

Application Information:

• Recruiter: LTTS Recruitment Division
• Contact Name: Avinash B C (Sr Talent Acquisition Specialist)
• Email: [e-mail]
• Phone: [phone]
• Company Website: https://www.ltts.com
• Salary/Rate: Market Competitive / Enterprise Telecommunications Package
• Deadline: Open until filled (Urgent Bangalore 5G Protocol Testing Opening)
• Notice Period: Immediate to 30 Days Preferred
• Contract Duration: Permanent / Full-Time Engagement (Bangalore, India)