Senior Firmware Engineer

Senior Embedded Software Engineer – U-boot, Linux Kernel & Device Drivers

Company Name: SAS One Pvt Ltd (www.sasone.in)

Location: Bengaluru, India

Experience: 6+ years

Job Summary:

We are looking for a highly skilled Senior Embedded Software Engineer experienced in Embedded C development, Linux Kernel programming, and Device Driver design. The ideal candidate will contribute to low-level software development for embedded systems, working closely with hardware teams to design, implement, and optimize drivers and kernel modules for next-generation platforms.

Key Responsibilities:

• Design, develop, and debug embedded software in C for SoM(System On Modules).
• Develop and maintain board support packages (BSPs), bootloaders, and low-level firmware.
• Work on real-time performance optimization, memory management, and inter-process communication.
• Develop and maintain Linux kernel modules and device drivers for various peripherals (I2C, SPI, UART, GPIO, USB, PCIe, HDMI, etc.).
• Collaborate with hardware engineers for bring-up, debugging, and validation of new boards.

Required Skills & Experience:

• Bachelor’s or Master’s degree in Electronics, Computer Engineering, or related field.
• 6+ years of hands-on experience in embedded software development.
• Strong proficiency in Embedded C.
• Deep understanding of Linux Kernel internals, device driver architecture, and hardware software interaction.
• Familiarity with ARM architecture, SoC bring-up, and YOCTO environments is a plus.
• Strong debugging and analytical skills, with the ability to work independently in fast-paced environments.

Preferred / Good-to-Have Skills:

• Exposure to Yocto Project, U-Boot, and bootloader customization.
• Experience with embedded Linux distributions or open-source contributions.
• Understanding of hardware schematics and signal analysis (oscilloscope, logic analyzer).

Primary skills:

At least 3+ years of working experience on embedded firmware development

- Experience in multithreaded programming, network programming (wired and wireless protocols), real-time programming, cross-platform and cross-language development

- Hands-on experience on driver development for various sensors

- Working knowledge of communication protocols like UART, I2C, SPI, USB, Ethernet, etc

- Product development experience with range of microcontroller/microprocessor architectures, adoption of bare-metal, RTOS and Linux operating systems on new platforms

-Hands-on experience on software development in Bluetooth domain is added advantage

- Experience with hardware lab equipment such as digital scope, logic analyser and JTAG

- Understanding of embedded development constraints and system performance

- Experience with programming in C/C++ and Embedded C

Develop firmware, system software for medical devices\ Automotive ECUs\ IoT edge devices & gateways.  Implement the logic and protocols and communications on 32-bit microcontrollers, configure OS, timers, tasks, interrupts, and communicate with external modems, SoCs, trans-receivers to design, code, and test desired functionality as per customer requirements

Job Requirements :

• Hands-on experience in firmware development using C language
• Hands-on experience in writing low-level device drivers for microcontrollers
• Know of real-time Operating system concepts, tasks, and interrupts’ configuration
• Hands-on experience with in-circuit debuggers
• Knowhow of wired and wireless communication protocols 
• Basic understanding of HW circuits, power supply designs, sensors, and actuators’ interfaces
• Experience in implementing SW development quality processes like ISO 9001 or ASPICE
• Good written and oral communication skills

Job Description:

WLAN Linux Device Driver development (802.11ax preferred)

• WLAN Debugging
• WLAN Firmware development (802.11ac, 802.11n)
• Networking/Wireless Domain knowledge
• Hostapd, Supplicant
• Cross compiling/porting experience
• Performance optimization & Firmware enhancements

Must have Skills:

• 1-10 years of experience in Embedded Software Design, Implementation and testing
• Good knowledge of C or C++
• Basic knowledge in Scripting (Shell, Perl or Python)
• Proficiency in Problem Solving and Debugging skills
• Excellent team working skills
• Experience with version control e.g. GIT
• Basic experience of working in Linux OS
• Network Drivers
• WLAN Protocol Knowledge – 11n, 11ac
• WLAN Linux Device Drivers
• Hostpad, Supplicant
• WLAN Debugging
• Fluent in English

Desired Candidate Details:

• Design, development, and maintenance
• WLAN Stack development and debugging
• Feature Enhancements, Applications, Tools for SDKs
• Basic module level unit testing, System testing
• Providing support to technical documentation team and field application engineers
• Close collaboration with the Chipset Vendor on the Software Development
• Participations in the Product design and Software Design Documentation – High level / Module level / Low level design
• Troubleshooting software and architectural issues

We are looking for a seasoned Wireless LAN Software Engineer to join our Wireless & Networking team in Chennai, Pollachi, Kochi (Cochin), Gurugram, Manesar, Bengaluru (Bangalore). The candidate must be an experienced Engineer and a good team player, who will work on Wireless software solutions which will enable us to develop the products for our customers quickly with industry leading quality. Working with Embedded Software in agile development projects, you will be responsible for creating and maintaining software of Wireless Access Point and Router Products including Module design, Development, JIRA Updates and Unit testing of the Software that is meeting industry standards, creating demos of the solution and customer support.