Carrier Certification Engineer - LTE/5G IoT Devices

Teltonika; Irving (TX); On-site; USD 70,000 - 95,000; Full time

Job summary

Teltonika Networks is seeking a Cellular Carrier Approval Specialist in Irving, TX to support certification and integration of industrial routers, gateways, and IoT devices with North American carriers. You will work with engineering, R&D, and compliance teams to ensure successful approvals.

You will manage testing, documentation, and liaison with carrier teams, external labs, and Teltonika USA and HQ in Lithuania. Strong networking, Linux, and open-source tool experience are required.

Qualifications

• Hands-on experience with networking devices and cellular technologies (4G/5G/5G RedCap).
• Understanding of telecommunication systems, networking protocols (TCP/IP, DHCP, DNS, VLANs, VPNs, routing, firewall principles).
• Experience with embedded Linux OpenWRT operating systems.
• Strong technical communication and ability to produce well-structured documentation.

Responsibilities

• Manage certification and approval activities with North American mobile carriers (AT&T, Verizon, T-Mobile).
• Perform carrier self-tests, validation procedures, and interoperability testing for cellular devices.
• Troubleshoot LTE and 5G connectivity issues related to modem behavior, roaming, APN configuration, and carrier requirements.
• Analyze modem logs, system logs, and network traces to identify issues and coordinate resolution with engineering and compliance teams.
• Prepare and manage certification-related documentation and reports; liaise with carrier certification teams and external labs.

Skills

Troubleshooting

Technical communication

Networking devices

Embedded Linux

AT commands

Carrier approval processes

Education

Technical or engineering education

Tools

OpenWRT

Wireshark

iperf

Modem utilities

Job description

Teltonika Networks is seeking a Cellular Carrier Approval Specialist in Irving, TX to support certification and integration of industrial routers, gateways, and IoT devices with North American carriers. You will work with engineering, R&D, and compliance teams to ensure successful approvals.

You will manage testing, documentation, and liaison with carrier teams, external labs, and Teltonika USA and HQ in Lithuania. Strong networking, Linux, and open-source tool experience are required.