Job code IRC308373 Published on 5 November 2026

Cellular Test Engineer (RAN / Device Testing) IRC308373

Function

Placeholder

Experience

5-10 years

Location

United States - San Jose CA

Skills

5G, Cellular Networks, Protocol Stack, Python, Qualcomm DSP

Work Model

Remote

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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.

••••••••••• 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. ••••••••••• 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:••••••••••• 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 •••••••••••

•••••••••••, a Hitachi Group Company, is a trusted digital engineering partner to the world’s largest and most forward-thinking companies. Since 2000, we’ve been at the forefront of the digital revolution – helping create some of the most innovative and widely used digital products and experiences. Today we continue to collaborate with clients in transforming businesses and redefining industries through intelligent products, platforms, and services.

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