Senior Zigbee - Thread Firmware Engineer

Role Overview

We are looking for a Senior Firmware Engineer with deep expertise in Zigbee, Thread, and IEEE 802.15.4 wireless stacks. The candidate will focus on architecting, developing, and optimizing embedded wireless protocol stacks on resource-constrained platforms, ensuring compliance, performance, and reliability.

Key Responsibilities

• Architect, design, and implement firmware solutions for Zigbee/Thread and IEEE 802.15.4-based products.
• Develop and optimize low-level drivers, MAC/PHY interfaces, and protocol stack layers.
• Debug and resolve wireless interoperability and certification issues using sniffers (Ubiqua, Wireshark, Perytons).
• Collaborate with hardware, QA, and product teams to ensure robust HW/SW co-design and regulatory compliance.
• Debug, analyze, and optimize power consumption and timing for battery-operated IoT devices.
• Support certification and compliance efforts for Zigbee/Thread-based products.
• Document software design, testing procedures, and release notes.

Required Skills & Competencies

• 12+ years of experience in embedded firmware development.
• Strong programming skills in C / Embedded C; assembly or scripting (Python) a plus.
• Expertise in IEEE 802.15.4 MAC/PHY, Zigbee, and Thread protocol stacks.
• Experience with embedded RTOS (FreeRTOS, Zephyr, or Linux system programming).
• Proficiency in debug tools (JTAG, GDB, oscilloscopes, logic analyzers, sniffers).
• Strong knowledge of microcontrollers, transceivers, and RF system design basics.
• Hands-on debugging and optimization for low-power wireless systems.
• Familiarity with IoT frameworks and domains like home automation, security, and energy management.
• Excellent problem-solving, communication, and cross-functional collaboration skills.

Qualification

• Bachelor’s or Master’s degree in Electronics, Computer Science, or related fields.
• • 12+ years of relevant experience in wireless embedded systems.