Embedded Firmware Engineer - Argus embedded systems

Polluxa, Inc.; Telangana; On-site; INR 1,500,000 - 2,700,000; Full time

Job summary

Polluxa, Inc. is seeking a Senior Embedded Firmware Engineer with 5+ years of hands-on work in embedded firmware development. You will contribute across the full lifecycle from requirements to validation and production support, focusing on ARM Cortex-M platforms and BLE-enabled devices.

You will design firmware architecture, implement real-time systems, optimize performance, and collaborate on hardware bring-up and driver development for reliable, production-ready products.

Qualifications

• 5+ years hands-on embedded firmware development experience.
• Strong expertise in Embedded C/C++ for ARM Cortex-M MCUs.
• Experience with RTOS or Bare-metal environments, BLE, and hardware-software integration.

Responsibilities

• Design, develop, test, debug, and maintain embedded firmware for ARM Cortex-M MCUs.
• Develop real-time firmware architecture using Bare-metal, FreeRTOS, and Zephyr RTOS.
• Create reusable, modular, production-ready firmware for multiple products.
• Optimize firmware for performance, memory, power, and reliability.
• Perform board bring-up, hardware validation, and board-level debugging.
• Develop and validate low-level drivers for GPIO, UART, SPI, I2C, ADC, DAC, USB, CAN, SDIO.
• Develop BLE applications using Nordic nRF Connect SDK and Zephyr RTOS; manage GATT services and secure connections.
• Design bootloader and firmware upgrade mechanisms with secure recovery.
• Conduct unit/integration testing and participate in code/design reviews.

Skills

Embedded C/C++

ARM Cortex-M

RTOS Bare-metal

BLE

Debugging

Tools

J-Link

ST-Link

GDB

Oscilloscope

Logic Analyzer

Multimeter

Job description

We are looking for an experienced Senior Embedded Firmware Engineer with 5+ years of hands-on experience in embedded firmware development, hardware bring-up, board-level debugging, peripheral driver development, and product development.

The ideal candidate should have strong expertise in Embedded C/C++, ARM Cortex-M microcontrollers, RTOS/Bare-metal development, BLE, hardware-software integration, and debugging . The candidate will be responsible for developing reliable firmware and supporting products through the complete development lifecycle, from requirements and architecture through validation and production support.

KEY ROLES & RESPONSIBILITIESEmbedded Firmware Development

• Design, develop, test, debug, and maintain embedded firmware using Embedded C/C++ for ARM Cortex-M based microcontrollers.
• Develop firmware architecture for real-time embedded systems using Bare-metal, FreeRTOS, and Zephyr RTOS .
• Develop reusable, modular, maintainable, and production-ready firmware.
• Optimize firmware for performance, memory utilization, power consumption, and system reliability .

Hardware Bring-Up & Board-Level Debugging

• Perform custom PCB bring-up, hardware validation, and board-level debugging for new embedded products.
• Bring up new microcontrollers and peripherals and validate hardware interfaces.
• Debug hardware/firmware integration issues using Oscilloscope, Logic Analyzer, Multimeter, J-Link, ST-Link, GDB, and UART logs .
• Perform root-cause analysis of complex hardware and firmware issues.

Peripheral Driver Development

Develop and integrate low-level drivers for:

GPIO | UART | SPI | I2C | ADC | DAC | PWM | Timers | DMA | RTC | USB | CAN | SDIO

• Develop and validate device drivers and peripheral interfaces.
• Interface sensors, microphones, displays, memory devices, motor drivers, and communication modules.

BLE / Wireless Firmware

• Develop BLE applications using Nordic nRF Connect SDK and Zephyr RTOS .
• Implement GATT services, characteristics, advertising, scanning, pairing, and secure BLE connections .
• Debug and optimize BLE communication and connectivity issues.
• Integrate BLE functionality with sensors, mobile applications, and embedded products.

Bootloader & Firmware Upgrade

• Design and develop bootloader and application firmware .
• Implement firmware upgrade mechanisms and flash-memory management.
• Support secure/reliable firmware update and recovery mechanisms where applicable.

Testing & Product Validation

• Perform unit testing, integration testing, hardware validation, and firmware verification.
• Develop test procedures and support product-level validation.
• Participate in design reviews, code reviews, debugging sessions, and root-cause analysis .