RAN Dev Integration

Hitachi, Ltd.; Bengaluru; On-site; INR 1,200,000 - 2,400,000; Full time

Benefits offered by this job

Exciting Projects

Collaborative Environment

Work-Life Balance

Professional Development

Excellent Benefits

Fun Perks

Job summary

GlobalLogic is seeking a Wireless Domain Expert to lead test strategy, plan development, and end-to-end testing for LTE/5G NR networks in Bengaluru. The role focuses on RAN capacity, performance testing, and troubleshooting across UE simulators and real networks.

You will collaborate with multi-disciplinary teams, wring test plans, and support field trials and carrier acceptance testing. Strong communication and scripting skills are required.

Qualifications

• In-depth knowledge of 3GPP LTE/5G NR specifications and O-RAN architecture.
• Hands-on with multi-vendor UE simulators (TM500) and O-RU simulators.
• Experience with protocol analyzers (Wireshark) and log parsing tools.

Responsibilities

• Translate requirements into test strategy and test plan documents.
• Perform end-to-end integration testing of CU/DU/RU interfaces.
• Conduct rigorous system testing under load and stress conditions.
• Execute complex load scenarios to validate Cell Capacity and Data Plane performance.
• Perform first-level log analysis to isolate UE, RAN, and Core issues.

Skills

3GPP LTE/5G NR specs

O-RAN architecture

End-to-End Call Flows (RACH, MME, PDCP

RAN Capacity & Performance testing

Test strategy & plan writing

Customer-facing skills

Log analysis & triage

Python or Bash scripting

CI/CD & JIRA familiarity

Linux-based test environments

Tools

TM500 UE Simulators

O-RU Simulators

Wireshark

Internal log parsing tools

Kubernetes/Docker

Job description

Job Description

-

Requirements

Job Description
Requirements

Wireless Domain Expertise:
- Strong understanding of 3GPP specifications (LTE & 5G NR) and O-RAN architecture.
- Deep knowledge of 4G/5G Layer 2 features (MAC, RLC, PDCP) and radio resource management.
- Mastery of End-to-End Call Flows: Initial Access (RACH), Registration, PDU Session Establishment, Handover (X2/Xn), and Release.
- Experience specifically in RAN Capacity and Performance testing. Proven ability to interpret System Design docs and convert them into actionable test scenarios.

Tools & Equipment:
- Hands-on experience with multi-vendor UE Simulators (e.g., TM500) and O-RU Simulators.
- Proficiency with protocol analyzers (e.g., Wireshark) and internal log parsing tools.
- Experience with Linux-based test environments.

Preferred Qualifications
- Experience writing test plans for feature validation, regression, and KPI benchmarking.
- Familiarity with defect tracking tools (JIRA) and CI/CD pipelines.
- Experience with Python or Bash scripting for test automation.
- Familiarity with Virtualized RAN (vRAN) and containerized environments (Kubernetes/Docker).
- Prior experience supporting field trials or carrier acceptance testing.

- Strong technical writing skills for creating Test Strategy, Test Plan, and detailed Performance Analysis reports.
- Experience in a customer-facing role or supporting field trials.
- Excellent communication, presentation and inter-perosnal skills

Key Responsibilities

1. Test Strategy & Planning:
- Review Requirement specifications, Feature Design Documents and translate them into comprehensive Test Strategy and Test Plan documents.
- Define acceptance criteria for functional, performance, capacity and system-level test cases
2. Integration & Execution:
- Perform End-to-End (E2E) integration testing, validating the interface between CU, DU, and RU.
- Execute functional testing in close collaboration with the development team to catch issues early in the cycle.
- Conduct rigorous System Testing under load and stress conditions.
- Execute complex load scenarios to validate Cell Capacity (max active UEs) and Data Plane Performance (UDP/TCP throughput).
- Conduct Latency Analysis and Control Plane performance testing

3. Lab & Equipment Management:
- Manage and troubleshoot complex test setups in both conducted and OTA (Over-the-Air) environments.
- Configure and operate industry-standard test equipment, including UE Simulators (e.g., Keysight, Viavi, Spirent) and RU Simulators.

4. Debugging & Triage:
- Perform first-level log analysis (L1/L2 logs) to isolate issues between the UE, RAN, and Core.
- Monitor field defects, lead the triage process, and collaborate with Systems and Dev teams to drive resolutions.

Job Responsibilities
Requirements
Wireless Domain Expertise:
- Strong understanding of 3GPP specifications (LTE & 5G NR) and O-RAN architecture.
- Deep knowledge of 4G/5G Layer 2 features (MAC, RLC, PDCP) and radio resource management.
- Mastery of End-to-End Call Flows: Initial Access (RACH), Registration, PDU Session Establishment, Handover (X2/Xn), and Release.
- Experience specifically in RAN Capacity and Performance testing. Proven ability to interpret System Design docs and convert them into actionable test scenarios.

Tools & Equipment:
- Hands-on experience with multi-vendor UE Simulators (e.g., TM500) and O-RU Simulators.
- Proficiency with protocol analyzers (e.g., Wireshark) and internal log parsing tools.
- Experience with Linux-based test environments.

Preferred Qualifications
- Experience writing test plans for feature validation, regression, and KPI benchmarking.
- Familiarity with defect tracking tools (JIRA) and CI/CD pipelines.
- Experience with Python or Bash scripting for test automation.
- Familiarity with Virtualized RAN (vRAN) and containerized environments (Kubernetes/Docker).
- Prior experience supporting field trials or carrier acceptance testing.

- Strong technical writing skills for creating Test Strategy, Test Plan, and detailed Performance Analysis reports.
- Experience in a customer-facing role or supporting field trials.
- Excellent communication, presentation and inter-perosnal skills

Key Responsibilities

1. Test Strategy & Planning:
- Review Requirement specifications, Feature Design Documents and translate them into comprehensive Test Strategy and Test Plan documents.
- Define acceptance criteria for functional, performance, capacity and system-level test cases
2. Integration & Execution:
- Perform End-to-End (E2E) integration testing, validating the interface between CU, DU, and RU.
- Execute functional testing in close collaboration with the development team to catch issues early in the cycle.
- Conduct rigorous System Testing under load and stress conditions.
- Execute complex load scenarios to validate Cell Capacity (max active UEs) and Data Plane Performance (UDP/TCP throughput).
- Conduct Latency Analysis and Control Plane performance testing

3. Lab & Equipment Management:
- Manage and troubleshoot complex test setups in both conducted and OTA (Over-the-Air) environments.
- Configure and operate industry-standard test equipment, including UE Simulators (e.g., Keysight, Viavi, Spirent) and RU Simulators.

4. Debugging & Triage:
- Perform first-level log analysis (L1/L2 logs) to isolate issues between the UE, RAN, and Core.
- Monitor field defects, lead the triage process, and collaborate with Systems and Dev teams to drive resolutions.

Job Responsibilities

Job Description
Requirements

Wireless Domain Expertise:
- Strong understanding of 3GPP specifications (LTE & 5G NR) and O-RAN architecture.
- Deep knowledge of 4G/5G Layer 2 features (MAC, RLC, PDCP) and radio resource management.
- Mastery of End-to-End Call Flows: Initial Access (RACH), Registration, PDU Session Establishment, Handover (X2/Xn), and Release.
- Experience specifically in RAN Capacity and Performance testing. Proven ability to interpret System Design docs and convert them into actionable test scenarios.

Tools & Equipment:
- Hands-on experience with multi-vendor UE Simulators (e.g., TM500) and O-RU Simulators.
- Proficiency with protocol analyzers (e.g., Wireshark) and internal log parsing tools.
- Experience with Linux-based test environments.

Preferred Qualifications
- Experience writing test plans for feature validation, regression, and KPI benchmarking.
- Familiarity with defect tracking tools (JIRA) and CI/CD pipelines.
- Experience with Python or Bash scripting for test automation.
- Familiarity with Virtualized RAN (vRAN) and containerized environments (Kubernetes/Docker).
- Prior experience supporting field trials or carrier acceptance testing.

- Strong technical writing skills for creating Test Strategy, Test Plan, and detailed Performance Analysis reports.
- Experience in a customer-facing role or supporting field trials.
- Excellent communication, presentation and inter-perosnal skills

Key Responsibilities

1. Test Strategy & Planning:
- Review Requirement specifications, Feature Design Documents and translate them into comprehensive Test Strategy and Test Plan documents.
- Define acceptance criteria for functional, performance, capacity and system-level test cases
2. Integration & Execution:
- Perform End-to-End (E2E) integration testing, validating the interface between CU, DU, and RU.
- Execute functional testing in close collaboration with the development team to catch issues early in the cycle.
- Conduct rigorous System Testing under load and stress conditions.
- Execute complex load scenarios to validate Cell Capacity (max active UEs) and Data Plane Performance (UDP/TCP throughput).
- Conduct Latency Analysis and Control Plane performance testing

3. Lab & Equipment Management:
- Manage and troubleshoot complex test setups in both conducted and OTA (Over-the-Air) environments.
- Configure and operate industry-standard test equipment, including UE Simulators (e.g., Keysight, Viavi, Spirent) and RU Simulators.

4. Debugging & Triage:
- Perform first-level log analysis (L1/L2 logs) to isolate issues between the UE, RAN, and Core.
- Monitor field defects, lead the triage process, and collaborate with Systems and Dev teams to drive resolutions.

What we offer

Exciting Projects: We focus on industries like High-Tech, communication, media, healthcare, retail and telecom. Our customer list is full of fantastic global brands and leaders who love what we build for them.

Collaborative Environment: You Can expand your skills by collaborating with a diverse team of highly talented people in an open, laidback environment — or even abroad in one of our global centers or client facilities!

Work-Life Balance: GlobalLogic prioritizes work-life balance, which is why we offer flexible work schedules, opportunities to work from home, and paid time off and holidays.

Professional Development: Our dedicated Learning & Development team regularly organizes Communication skills training(GL Vantage, Toast Master),Stress Management program, professional certifications, and technical and soft skill trainings.

Excellent Benefits: We provide our employees with competitive salaries, family medical insurance, Group Term Life Insurance, Group Personal Accident Insurance , NPS(National Pension Scheme ), Periodic health awareness program, extended maternity leave, annual performance bonuses, and referral bonuses.

Fun Perks: We want you to love where you work, which is why we host sports events, cultural activities, offer food on subsidies rates, Corporate parties. Our vibrant offices also include dedicated GL Zones, rooftop decks and GL Club where you can drink coffee or tea with your colleagues over a game of table and offer discounts for popular stores and restaurants!

About GlobalLogic

GlobalLogic is a full-lifecycle product development services leader that combines chip-to-cloud software engineering expertise and vertical industry experience to help our customers design, build, and deliver their next-generation products and digital experiences. We expertly integrate design, complex engineering, and agile delivery capabilities to deliver superior business outcomes for global brands in telecom, automotive, healthcare, technology, media and entertainment, manufacturing, and semiconductor industries.

Headquartered in Silicon Valley, GlobalLogic employs over 25,000 designers and engineers across the globe. Analysts like NASSCOM and Zinnov have recognized us for being a top company in our field, and we are consistently nominated as a preferred employer by both global HR consultative firms and local job boards. By creating a work environment that is exciting and flexible, and by fostering growth through ongoing learning and development programs, we empower our employees to achieve both their professional and personal goals.

At GlobalLogic, we make amazing products — and careers.