Cellular Test Engineer (RAN / Device Testing)

Hitachi, Ltd.; San Jose (CA); A distancia; USD 120.000 - 130.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Exciting Projects

Collaborative Environment

Work-Life Balance

Professional Development

Excellent Benefits

Descripción de la vacante

GlobalLogic is seeking a seasoned test engineer to plan, execute, and validate 5G NR and 4G LTE tests. You will analyze protocol logs, manage RF test benches, and perform field validation, collaborating with baseband, firmware, software, and carrier teams.

You’ll design automated test scripts, maintain CI/CD pipelines, and ensure standards compliance. A strong foundation in 3GPP specs and hands-on test experience is required for remote work opportunities.

Formación

• 3–6+ years in cellular system testing, mobile protocol verification, or RAN integration.
• Strong knowledge of 3GPP specs (5G NR Rel 15/16/17, LTE Advanced Pro).
• Deep understanding of RAN architecture (gNB/eNB, CU/DU, Open RAN).
• Proficient in L1/L2/L3 protocols (Random Access, Handover, Beamforming, CA, EN-DC/NR-DC).

Responsabilidades

• Hands-on with wireless test sets and network emulators.
• Log analysis and diagnostics with QA tools.
• Operate spectrum analyzers, power meters, RF matrices, RF switches.
• Python-based test automation and instrument control.
• Use Git and Jira for versioning and bug tracking.
• Bachelor’s or Master’s degree in CS/EE/Math or related field.

Conocimientos

Test execution

Protocol verification

RAN analysis

Test automation

CI/CD

Cross-functional collaboration

Standards knowledge

Educación

Bachelor's or Master’s in CS/EE/Math

Herramientas

Keysight UXM

Rohde & Schwarz CMX500/CMW500

Anritsu MT8821C/MT8000A

Spirent

QXDM/QCAT

Wireshark

XCAL/XCAP

TEMs Investigation

Python

Git

Jira

Descripción del empleo

Job Description

• Test Execution & Validation: Plan, develop, and execute functional, performance, throughput, mobility, and regression test cases for 5G NR (SA/NSA, FR1/FR2) and 4G LTE devices.
• Protocol & RAN Analysis: Analyze protocol logs across PHY, MAC, RLC, PDCP, RRC, and NAS layers. Troubleshoot call drops, handover failures, throughput degradation, beam management, and paging issues.
• Lab & Test Bench Management: Set up, configure, and maintain RF test benches, network emulators, channel emulators, and shielding chambers (anechoic/reverberation).
• Field & Drive Testing: Plan and perform field testing, drive testing, and carrier acceptance validation; analyze drive test logs against network KPIs.
• Test Automation: Design, build, and maintain automated test scripts and CI/CD pipelines to streamline regression testing and test bench instrumentation.
• Cross-Functional Collaboration: Partner closely with baseband hardware, firmware, software development, and carrier certification teams to report, triage, and verify bug fixes.
• Standards Compliance: Review and apply evolving 3GPP standards (Release 15/16/17+) and carrier-specific test requirements to internal validation strategies.

Requirements

• 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]).

Job Responsibilities

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

GlobalLogic estimates the starting pay range for this role to be performed in Remote to be $120,000 to $130,000 and reflects base salary only. This pay range is provided as a good‑faith estimate, and the amount offered may be higher or lower. GlobalLogic takes many factors into consideration in making an offer, including candidate qualifications, work experience, operational needs, travel and onsite requirements, internal peer equity, prevailing wage, responsibilities, and other market and business considerations.

What we offer

Exciting Projects:Come take your place at the forefront of digital transformation! With clients across all industries and sectors, we offer an opportunity to work on market-defining products using the latest technologies.

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 and opportunities to work from home.

Professional Development:We provide continuing education classes, professional certification and training (technical, soft skills, language, and communication skills) to help you realize your professional goals. Being part of a global organization, there are additional learning opportunities through international knowledge exchanges.

Excellent Benefits:We provide our employees with competitive salaries, health and life insurance, short-term and long-term disability insurance, a matched contribution 401K plan, flexible spending accounts, and PTO and holidays

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.