Certification Specialist

Description

We are looking for a Cellular Carrier Approval Specialist to join our team in Irving, Texas (USA).

Responsibilities

• Manage certification and approval activities with North American mobile carriers such as AT&T, Verizon, T-Mobile, etc.
• Perform carrier self-tests, validation procedures, and interoperability testing for cellular networking devices.
• Execute hands-on troubleshooting of LTE and 5G connectivity issues related to modem behavior, network registration, data sessions, roaming, APN configuration, and carrier-specific requirements.
• Analyze modem logs, system logs, network traces, and other diagnostic information to identify and resolve technical issues.
• Cook up technical issue resolution with Teltonika's Networking Solutions software engineering, R&D, and product compliance teams.
• Communicate directly with carrier certification teams, external laboratories, and technical representatives during certification and validation activities.
• Prepare and manage certification-related documentation, technical reports, and application materials.
• Serve as a liaison between Teltonika USA, mobile network operators, external certification partners, and Headquarters in Lithuania.

Requirements

• Technical or engineering education or background.
• Understanding of telecommunication systems, networking technologies and protocols (TCP/IP, DHCP, DNS, VLANs, VPNs, routing, firewall principles), and basic internet technologies (WWW, FTP, etc.).
• At least 12 months of hands-on experience with networking devices and cellular technologies (4G/5G/5G RedCap), including network authentication methods and data session establishment.
• Strong technical communication skills, including the ability to explain complex topics clearly and produce well-structured documentation.
• Strong troubleshooting and problem-solving skills.
• Experience working with embedded, Linux-based OpenWRT operating systems.
• Knowledge and ability to use AT commands.
• Previous experience with carrier approval processes, or certification laboratories is considered a significant advantage.
• Hands-on experience with cellular routers, gateways, modems, or IoT devices; familiarity with diagnostic tools such as Wireshark, iperf, or modem utilities is considered an advantage.