Embedded Firmware Engineer -RF Focus
Job Title: Embedded Firmware Engineer (RF Focus)
Location: Gurgaon, Haryana (On -site)
Employment Type: Full-Time
Experience: 3-5 years
We’re hiring an Embedded Firmware Engineer (3–5 yrs) with strong experience in Sub-GHz RF, LoRa/LoRaWAN, and IoT systems. The role focuses on firmware development, RF communication, and secure telemetry.
About Aaizel Tech
Aaizel Tech is a pioneering tech startup at the intersection of cybersecurity, AI, geospatial solutions, and more. We drive innovation by delivering transformative technology solutions across industries. As part of our dynamic team, you'll gain hands-on experience and learn from experts who are dedicated to pushing the boundaries of what's possible.
Responsibilities
• Develop firmware for STM32 (WL/H/L/F series)
• Design & implement Sub-GHz RF (403/433/868/915 MHz) systems
• Work on LoRa PHY/MAC & LoRaWAN stack (OTAA/ABP, uplink/downlink)
• Perform RF testing & debugging (RSSI, SNR, range testing, SDR/spectrum tools)
• Implement secure communication (AES-128/256, CRC/SHA)
• Develop drivers: UART, SPI, I2C, ADC, DMA
• Work with FreeRTOS (tasks, queues, ISRs, low power)
• Build communication stacks: RS485/Modbus, RS232, MQTT, TCP/IP, UDP
• Implement bootloader & OTA updates
• Debug using SWD/JTAG, logic analyzer, DSO
• Optimize for performance, power, and RF reliability
Requirements
• 3–5 years in embedded firmware + RF systems
• Strong in Embedded C, STM32CubeIDE, HAL/LL
• Hands-on with LoRa/LoRaWAN & Sub-GHz communication
• Understanding of RF fundamentals (link budget, interference, antennas)
• Experience in secure communication (AES)
• Good knowledge of FreeRTOS & industrial protocols (RS485/Modbus)
• Strong debugging skills (firmware + RF)
• Basic hardware/RF PCB understanding
Good to Have
• Experience with ChirpStack / TTN
• Knowledge of FSK/GFSK
• RF certification exposure (CE/FCC/ETSI)
How to Apply
• Please submit your resume, portfolio, and a cover letter outlining your relevant experience and how you can contribute to Aaizel Tech’s success.
Shubham Vishwakarma
Full Stack Developer - Averlon
About Aaizel International Technologies Pvt Ltd
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Full Stack Developer - Averlon