Cellular Carrier Certification Engineer

Teltonika Ltd.; Irving (TX); On-site; USD 65,000 - 95,000; Full time

Job summary

Teltonika Ltd. in Irving, Texas is seeking a Cellular Carrier Approval Specialist to coordinate certification activities with North American mobile carriers and support the integration of Teltonika Networks devices.

You will collaborate with Teltonika’s Networking Solutions Product Compliance team to ensure successful certification and deployment across carrier networks. The role requires hands-on experience with 4G/5G networks, OpenWRT, and testing tools like Wireshark.

Qualifications

• Technical or engineering education or background.
• Understanding of telecommunication systems, networking technologies and protocols (TCP/IP, DHCP, DNS, VLANs, VPNs, routing, firewall principles).
• At least 12 months of hands-on experience with networking devices and cellular technologies (4G/5G/5G RedCap).
• Strong technical communication skills and ability to produce well-structured documentation.
• Strong troubleshooting and problem-solving skills.
• Experience with embedded, Linux-based OpenWRT operating systems.
• Knowledge and use of AT commands.
• Carrier approval processes or certification laboratories experience is a plus.
• Hands-on experience with cellular routers, gateways, modems, or IoT devices; familiarity with Wireshark, iperf, or modem utilities is an advantage.

Responsibilities

• Manage certification and approval activities with North American mobile carriers.
• Perform carrier self-tests, validation procedures, and interoperability testing for cellular networking devices.
• Execute troubleshooting of LTE and 5G connectivity issues related to modem behavior and network registration.
• Analyze modem logs, system logs, and network traces to identify issues.
• Coordinate technical issue resolution with software engineering, R&D, and product compliance teams.
• Communicate with carrier certification teams, external laboratories, and technical representatives.
• Prepare and manage certification-related documentation and reports.
• Serve as a liaison between Teltonika USA, mobile network operators, external certification partners, and Headquarters in Lithuania.

Skills

Networking devices

Cellular technologies (4G/5G)

Troubleshooting

Technical communication

Linux-based OpenWRT

AT commands

Carrier approval processes

Wireshark

Education

Technical or engineering degree

Tools

Wireshark

iperf

modem utilities

Job description

Teltonika Ltd. in Irving, Texas is seeking a Cellular Carrier Approval Specialist to coordinate certification activities with North American mobile carriers and support the integration of Teltonika Networks devices.

You will collaborate with Teltonika’s Networking Solutions Product Compliance team to ensure successful certification and deployment across carrier networks. The role requires hands-on experience with 4G/5G networks, OpenWRT, and testing tools like Wireshark.