Exciting opportunities for WLAN Developers

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).

About the role

Experience in Firmware/Software programming in embedded Linux & RTOS based application development. Candidate must have a very good understanding of ARM processor, hardware and custom board or product development experience.

Roles and Responsibilities:

• Design, code and integrate software for an embedded Linux/RTOS targeted application (applications, drivers, framework)
• Customization, deployment and maintenance of Linux distribution
• Interact with Linux kernel, integrate new device drivers Improvement and maintain existing software components
• Perform unit test, Integration test, verification and validation of the product developed.
• Assist with the hardware design surrounding the processor
• Document the projects according to standards (protocols, architecture, technical specifications, etc.)

Qualifications:

• Bachelor degree in Electronics or computer science engineering.
• Minimum 6 - 12 years of experience in embedded Linux programming.

Specific skills:

• Expert in C programming with RTOS.
• Hands-On experience with Protocol development.
• Nice to have Protocol development experience such as USB or DP, HDMI or equivalent.
• System level design and understanding of overall system
• Strong knowledge of Linux, ARM processor architecture with SOC, FPGA interface is a plus.
• Hand-on experience on Linux kernel and device-driver development and debugging.
• Knowledge/Experience of TCP/IP, Network programming.
• Ability to write effective and reusable code according to best practices.
• Must be a dynamic, autonomous, and team-oriented individual.
• Knowledge of hardware and low-level development is an asset.

Position Overview:

This position is part of highly skilled fimrware team that do software board bring up of bare silicon for next generation products. In order to write system software for embedded electronic products, this position requires academic background in electronics engineering to understand hardware concepts such as digital logic, schematics, and microprocessor communications to develop effective embedded software.

Candidate should have complete knowledge of Software development cycle from architecture definition to the implementation.

Responsibilities:

• Must wear multiple hats from analyzing field and factory reported issues to software integration.
• Be a liason for troubleshooting and debugging complex systems and identifying the root cause.
• Develop detailed design documents and customer facing application notes for the system and IOT features for Mobile routers.
• Act as a product lead and be part of bigger team in software bring up.   
• Ability to work on Low level software such as bootloaders and understanding of low level functional blocks is a must.
• Work on Linux kernel and configuration.
• Write or port device drivers for Ethernet, USB, GPIO, LED, Bluetooth, Accelormeter, LCD and touch screen.
• Debug stability issues in data routing between WAN and LAN interfaces.
• Work with Software QA with test plan and execution.
• Work with Hardware team to identify and root cause stability problems.

Experience/Requirements:  

• Demonstrable knowledge of C, C++, Assembly programming skills
• Overall 10+ years of experience in embedded environment preferabily Linux.
• Board bring up proficiency with bootloaders and other low level software, must be very good with debugging techniques.
• Experience in TCP/IP networking is must for trouble shooting throughput and other traffic issues.
• Driver experience with I2C, SPI, UART, LCD, Ethernet, PCIe is a plus.
• Experience with low level debugging using JTAG.
• Experience with Makefiles, and build environments such as PTXDIST, Yocto and Buildroot.    
• Experience with version control such as git and svn.
• Good communication skills and team player.
• Ability to work independently and autonomously to meet deadlines, in a fast-changing environment.

Education:

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

• Very strong knowledge in Embedded C including
• Data structures
• Function pointers
• Bitwise operations
• Experience with Finite State Machine (FSM) software design
• Required experience in AVR microcontrollers and projects to demonstrate it
• Familiarity with ARM 32 bit microcontrollers (Cortex M or any other)
• Required experience with common communication protocols like SPI, UART, I2C etc.
• Comfortable with reading datasheets and basic hardware schematics
• Comfortable with linux development environment including the use of GCC, gdb, makefile

Soft Skills

• Good communication skills
• Self-driven
• Passion for embedded engineering