Demo

Cellular PHY Layer Software Engineer | 5G Modem Systems

Xoriant US Staffing
San Jose, CA Contractor
POSTED ON 6/13/2026
AVAILABLE BEFORE 7/11/2026

Senior Engineer, Modem Software

San Jose CA ( Onsite)

6 Months Contract


Modem Software team is looking for highly motivated and enthusiastic Software Engineers to join our team in developing and commercializing world class cellular modem SW. We are looking for engineers with expertise cellular domain with focus on L1 control/PHY layers and embedded software. As a member of Modem Software team, you will be responsible for development and commercialization of cellular chipsets in North America market • Commercialize client only Exynos modem in North American market • Analyze field and test equipment logs, debug issues and provide fix • Participate in new feature development and verification • Understand existing embedded software, identify optimization areas and provide solutions to improve overall performance • Collaborate with wider teams and customers to provide end to end solutions

Requirements

• Bachelor’s Degree in Engineering or Computer Science Discipline with 5 years of relevant industry experience, or Master’s with 3 years or PhD with 0 years in field of wireless communication technologies.

• Excellent coding skills in C/C in embedded space

• Excellent understanding of HW abstraction layer and embedded concepts

• Strong understanding of 3GPP protocol specifications in L1

• Knowledge of physical layer channels (PDCCH, PDSCH, PBCH) and related procedures in downlink

• Good understanding of L2/L3 protocols especially MAC, RLC, PDCP, RRC is preferred

• Ability to work on test equipment and vendor drops to verify and debug assigned features/issues end to end

• Ability to take ownership and bring innovations in development of commercial modem software

• You’re inclusive, adapting your style to the situation and diverse global norms of our people.

• An avid learner, you approach challenges with curiosity and resilience, seeking data to help build understanding.

• You’re collaborative, building relationships, humbly offering support and openly welcoming alternate approaches.

• Innovative and creative, you proactively explore new ideas and adapt quickly to change.

Salary : $80 - $85

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