5G/LTE Expert (W2 Contract)

We are seeking a highly skilled 5G/LTE Expert to join our innovative team. This role focuses on the design, development, and optimization of next-generation high-performance fixed wireless gateways. You will work closely with hardware, firmware, and software teams to deliver reliable, standards-compliant, and high-throughput 5G/LTE solutions.

Main Missions

• Contribute to the 5G technology and product roadmap
• Guide customers during the product definition phase
• Participate to hardware design choices (key components, cost driven conception).
• Guide engineering Software developments during the design phase
• Propose SW architecture and evolutions in Sagemcom supported middlewares while identifying opportunities of contributions to open source communities such as PRPL or RDK-B
• Build test plans to confirm functions and performance of the products
• Reproduce, Investigate and resolve issues with the engineering teams, SoC vendor support and the customers
• Conduct trainings to Sagemcom engineering groups involved in 5G/LTE projects. Maintain a corporate knowledge database
• Follow chip-makers and module vendors roadmaps
• Evaluate new chipsets, software and RF solutions, module vendor samples
• Benchmark certification labs capabilities, lead certification efforts for our CPE remotely or locally in the US labs

Skills and qualifications

• Minimum 10 years of experience in the industry.

• Strong understanding of 3GPP standards including LTE, 5G NR (NSA & SA)
• Protocol stack expertise for layer 1~3 protocols, including PHY, MAC, RLC, PDCP, RRC,
• Understanding of carrier aggregation, dual connectivity (EN-DC) and other advanced 5G/LTE features.
• Familiarity with RF principles and physical layer parameters, such as SNR, RSSI, RSRP, RSRQ, SINR.
• Strong knowledge of IP networking protocols (IPv4/IPv6, NAT, XLAT, DNS, DHCP).

• Proficiency in modem log analysis tools, such as QXDM, QCAT, Wireshark.
• Ability to analyze over-the-air (OTA) signaling and low-level logs for failure root cause (attach failures, handovers, call drops, ) and performance bottlenecks.
• Use of log decoders and post-processing scripts (e.g., Python) for test automation and data analysis.

• Familiarity with network emulators and test equipment, such as R&S, Anritsu, Keysight, Spirent.

• Understanding of carrier conformance and GCF/PTCRB certification processes.
• Experience with interoperability testing (IOT) with major network operators.

• Effective communication with cross-functional teams, including RF, software, test.