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# Senior Systems Architect, UE Terminal NTN Platform

- **Company:** Viasat, Inc.
- **Location:** Carlsbad, CA, United States
- **Experience:** Expert
- **Salary:** $180,500.0 - $285,000.0
- **Contract:** Permanent contract
- **Skills:** LTE (Telecommunication), Interoperability, Radio-Frequency Identification, Software Requirements Analysis, Systems Architecture, Systems Integration, Strategies of Testing, 5G NR
- **Published:** July 30, 2026
- **Apply:** https://www.techcareers.com/job.asp?id=3336579800&tx=HT7064TYZ&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54

## About the Role

* 10+ years of experience in wireless communications, cellular devices, or system architecture.
 * Strong knowledge of LTE and 5G NR technologies.
 * Deep understanding of UE architecture, modem chipsets, RF systems, and device integration.
 * Demonstrated experience defining system architectural requirements to UE requirements.
 * Senior individual contributor with proven architectural authority.
 * Experience working with chipset vendors, OEMs, and network partners.
 * Strong problem-solving and technical leadership skills.
 * Integration experience qualifying a UE in a 3GPP environment.
 * Product Engineering experience to participate in Product Roadmap strategic discussions.
 * Previous experience providing cost and schedule estimates for both new proposals and sustaining activities
 * Ability to support multiple simultaneous projects and self-prioritize.
 * Excellent communication, organizational and collaboration skills.
 * Bachelor of Science in Electrical Engineering, Physics, or other related engineering discipline
 * Availability to support up to 20% travel (averaged over time)

What will help you on the job:

 * Master of Science in Electrical Engineering, Physics, or other related engineering discipline
 * Experience with 5G NTN, satellite communications, or Direct-to-Device systems.
 * Experience with smartphones, IoT devices, RedCap, eRedCap, or NB-IoT.
 * Familiarity with 3GPP standards and standardization activities.
 * Experience with PTCRB, GCF, carrier certification, and OTA testing.
 * Direct involvement in NTN or satellite communications product launches.

## Description

* Represent the UE Terminal group in the end-to-end system infrastructure architecture for Viasat's D2D NTN platform, spanning UE, RAN, Core Network, and interworking functions.
 * Accountable for architectural inputs into the platform roadmap, that impact the UE Terminal, ensuring standards compliance, feature priorities and system/RAN constraints.
 * Represent the UE Terminal team in end-to-end system architecture discussions.
 * Translate product goals into clear architectural principles, interfaces, and assumptions across NTN and TN.
 * Define UE Terminal features required to support alignment with 3GPP Rel-19/20 NTN specifications.
 * Identify gaps or ambiguities in standards and propose deployable, standards-compliant solutions.
 * Develop technical requirements and architectural solutions for NTN-enabled devices.

Standards & Industry Engagement

 * Leverage 3GPP system architecture expertise to ensure alignment with evolving NTN standards.
 * Provide guidance on standards interpretation and implementation.
 * Drive alignment with chipset vendors, OEMs, operators, and standards organizations.

The day-to-day:

UE Terminal Product Definition

 * E
ngage with 5G NR NTN terminal product teams and

 * Translate product and customer requirements into UE system requirements.
 * Specify UE terminal requirements related to NTN access, mobility, roaming, network selection, behavior, and power management
 * Align with chipset vendors, OEMs, and network vendors on feasible UE terminal implementations for multiple applications such as IoT, RedCap and eRedCap.
 * Drive system-level hardware and software trade-off discussions.

Chipset Evaluation & Selection

 * Evaluate and benchmark NTN-capable modems, chipsets, and reference designs.
 * Analyze vendor roadmaps, feature support, and standards compliance.
 * Lead technical engagement with chipset vendors and device manufacturers.
 * Support platform selection and technology investment decisions.

Integration, Test & Validation

 * Support lab, field, and commercial integration and readiness through E2E validation strategies and success criteria ensuring the UE Terminal is operating per the 3GPP Rel-19/20 NTN standards.
 * Define UE validation and test strategies.
 * Troubleshoot hardware, software, RF, and network integration issues.
 * Support certification activities including PTCRB, GCF, OTA, and carrier acceptance testing.
 * Ensure interoperability with NTN and terrestrial networks.


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