Cellular / Wireless Engineer @ Square One Resources

We are looking for an experienced Cellular / Wireless Engineer to support the transition of an existing connected IoT product platform from 4G/LTE connectivity to LoRaWAN, with particular focus on LoRaWAN Class B operation.

The engineer will play a key role in evaluating the existing cellular solution, defining the future LoRaWAN architecture, and supporting implementation, integration, optimization and verification. The assignment requires strong knowledge of embedded wireless systems, RF communication, low-power IoT and LoRaWAN Class B communication.

• Strong experience with LoRaWAN and embedded IoT products.
• Hands-on experience with LoRaWAN Class B.
• Good understanding of beacon acquisition, synchronization, ping-slot scheduling and Class B downlink behaviour.
• Experience with 4G/LTE cellular technologies and embedded cellular modules.
• Strong understanding of RF fundamentals, antennas, link budgets, receiver sensitivity and wireless performance.
• Experience integrating wireless modules into embedded hardware and software platforms.
• Strong understanding of low-power and battery-operated wireless devices.
• Experience with interfaces such as UART, SPI and I²C.
• Ability to troubleshoot across RF, hardware, firmware, protocol and network layers.
• Experience taking wireless products from development through verification and into production.

We are looking for an experienced Cellular / Wireless Engineer to support the transition of an existing connected IoT product platform from 4G/LTE connectivity to LoRaWAN, with particular focus on LoRaWAN Class B operation.

The engineer will play a key role in evaluating the existing cellular solution, defining the future LoRaWAN architecture, and supporting implementation, integration, optimization and verification. The assignment requires strong knowledge of embedded wireless systems, RF communication, low-power IoT and LoRaWAN Class B communication.

,(Support the technical transition from an existing 4G/LTE-based solution to LoRaWAN. , Define and implement a LoRaWAN Class B communication solution. , Work with Class B beacons, time synchronization and scheduled receive windows (ping slots). , Analyse the existing cellular architecture, communication patterns, latency requirements, coverage and power consumption. , Evaluate the trade-offs between Class A, B and C, with particular focus on achieving predictable downlink communication while maintaining low power consumption. , Support selection and integration of appropriate LoRa/LoRaWAN chipsets, modules and RF components. , Work closely with embedded software teams on drivers, protocol stack integration and device communication. , Configure and optimize parameters including spreading factor, bandwidth, coding rate, transmission power and Adaptive Data Rate (ADR). , Optimize battery lifetime, communication reliability, latency and range. , Support RF testing, link-budget analysis, coverage testing and field verification. , Troubleshoot issues across RF, hardware, firmware, LoRaWAN protocol and network layers. , Support verification and validation towards product and regulatory requirements. , Document architecture, technical decisions, test results and recommendations. ) Requirements: Wireless, IoT, 4G, Windows, C, Testing, Embedded C, UART, SPI