Position : Principal Engineer - WLAN MAC Coexistence Systems (Firmware Engineer - WiFi/BT/ZigBee)

Experience : 7+ Years

Location : Bangalore

Work Mode : Work From Office (WFO)

Role & Responsibilities :

WLAN/BT/ZigBee Coexistence Development :

- Design, develop, implement, and maintain WLAN-Bluetooth-ZigBee coexistence solutions for advanced wireless connectivity platforms.

- Work on coexistence algorithms and switching control logic between WLAN and Bluetooth subsystems.

- Analyze coexistence performance issues and optimize firmware behavior to improve wireless throughput, latency, and stability.

- Contribute to MAC-layer coexistence architecture and protocol-level enhancements.

Embedded Firmware Development :

- Develop low-level embedded firmware modules in C and Assembly language for wireless communication systems.

- Work on embedded system programming involving memory management, interrupts, synchronization, and hardware interfaces.

- Implement and optimize firmware functionalities for wireless chipsets and SoC platforms.

- Support firmware integration activities across WLAN, Bluetooth, and ZigBee stacks.

Wireless Protocol Understanding :

- Work extensively with Wi-Fi (IEEE 802.11), Bluetooth, BLE, and ZigBee protocols.

- Analyze MAC/PHY layer interactions and RF coexistence behaviors.

- Debug protocol-level issues involving WLAN and Bluetooth communication.

- Understand packet scheduling, coexistence arbitration, channel sharing, and RF interference mitigation techniques.

Debugging & Performance Analysis :

- Perform advanced debugging using GDB, stack trace analysis, crash dump analysis, and firmware log interpretation.

- Analyze and troubleshoot wireless connectivity, coexistence, and performance issues.

- Use Wireshark and Bluetooth sniffers to capture and analyze protocol traffic.

- Debug cross-layer issues spanning WLAN MAC, PHY, BT Stack, Firmware, and Hardware layers.

- Investigate customer-reported issues and provide root cause analysis with corrective actions.

Pre-Silicon & Post-Silicon Validation :

- Participate in pre-silicon design verification of coexistence interfaces using TCL/Python/SystemC-based simulation environments.

- Develop automation scripts and validation frameworks for coexistence testing.

- Perform silicon bring-up activities and hardware validation for new chipsets/platforms.

- Validate firmware functionality and coexistence performance in simulation and hardware environments.

- Ensure compliance with wireless protocol standards and internal validation methodologies.

Cross-Functional Collaboration :

- Collaborate with global cross-functional engineering teams including :

1. WLAN MAC Teams

2. PHY Systems Teams

3. Bluetooth Stack/Firmware Teams

4. ASIC/Hardware Design Teams

5. Validation & Test Teams

6. Customer Engineering Teams

- Participate in design discussions, technical reviews, and architecture planning.

- Coordinate with stakeholders to resolve integration and interoperability issues.

Design Improvement & Innovation :

- Identify design bottlenecks, coexistence limitations, and system-level inefficiencies.

- Propose enhancements to existing firmware architecture, coexistence methodologies, and validation processes.

- Drive continuous improvement initiatives for debugging efficiency, protocol compliance, and system performance.

- Contribute to reusable frameworks, debugging tools, and automation solutions.