1. Embedded Linux BSP Engineer (1) Job Responsibilities: BSP Development and Maintenance: Develop and maintain the Board Support Package (BSP) for Linux systems, which includes bootloaders, device drivers, and file systems. In simple terms, this ensures that the Linux system can boot and run stably on specific hardware platforms. Compatibility Issue Resolution: Responsible for addressing compatibility issues between hardware and software, ensuring the entire system is stable and reliable. This requires close collaboration with hardware engineers to tackle challenges together. Collaboration and Support: Work closely with hardware and software engineers throughout the hardware design and software development process, providing technical support. (2) Salary Level: Generally, BSP engineers have a relatively high salary. For example, in first-tier cities like Beijing, Shanghai, and Shenzhen, BSP engineers with 3-5 years of experience typically earn between 15,000 and 25,000 yuan per month. Senior engineers with rich experience and strong technical skills can earn over 30,000 yuan per month. In cities like Chengdu, Wuhan, and Nanjing, salaries are slightly lower, with engineers earning around 10,000 to 18,000 yuan per month with 3-5 years of experience. (3) Required Skills: Proficient in Programming Languages and Development Tools: C, C++, Shell, etc., are the “languages” that BSP engineers use to communicate with hardware and systems. C language, as the foundational language for embedded development, is efficient and flexible, allowing direct manipulation of hardware resources; C++ builds on C by adding object-oriented features, making it more suitable for developing large and complex systems. Shell scripting is commonly used for system configuration and automation scripts, improving development efficiency. Additionally, proficiency in relevant development tools and environments, such as GCC compiler, GDB debugger, and Makefile project management tools, is required.
Knowledge of the Linux Kernel: Familiarity with the architecture and operating mechanisms of the Linux kernel, including process management, memory management, and file systems. A deep understanding of the kernel is essential for handling various complex situations during development. Solid Hardware Knowledge: Having a certain level of hardware knowledge is a must for BSP engineers. They need to be able to read hardware schematics and understand how hardware works, just as a doctor must understand human anatomy to interact accurately with hardware during development. Additionally, knowledge of hardware interface standards and communication protocols, such as SPI, I2C, and UART, is necessary for developing corresponding drivers. Understanding hardware performance metrics and power consumption requirements is also important for optimizing and improving the overall system performance.
2. Embedded Linux Driver Development Engineer (1) Job Responsibilities: Driver Development: Develop drivers for various hardware devices, such as displays, cameras, audio devices, Bluetooth, and WiFi modules, to ensure these hardware components function properly under the Linux system. Driver Porting and Debugging: Port existing drivers to different hardware platforms and perform debugging and optimization to ensure driver stability and reliability. Problem Analysis and Resolution: Analyze and resolve issues related to drivers to ensure the system operates normally. (2) Salary Level: Salaries are similar to those of BSP engineers. In first-tier cities, driver development engineers with 3-5 years of experience typically earn between 15,000 and 25,000 yuan per month; in second-tier cities, the range is 10,000 to 18,000 yuan. In industries with high demand for driver development, such as smartphones and security monitoring, salaries may be higher. (3) Required Skills: Operating System and Principles Knowledge: Proficient in the Linux operating system, familiar with system architecture, computer organization principles, and data structure knowledge. This knowledge is fundamental for understanding system operation and driver development. Hardware Development Experience: Experience in embedded ARM development, with at least a grasp of Linux character driver development. Ideally, candidates should also have the ability to port development for microcontrollers and ARM embedded processors. Ability to Read Hardware Schematics and Manuals: The ability to read hardware schematics and write software driver programs based on chip manuals is a key skill in driver development.
3. Embedded Linux System Development Engineer (1) Job Responsibilities: System Configuration and Optimization: Master Linux system configuration and optimize the system to ensure optimal performance. File System and Boot Process: Proficient in creating Linux file systems, familiar with various file system formats (such as YAFFS2, JFFS2, RAMDISK, etc.), and knowledgeable about the embedded Linux boot process. System Integration and Deployment: Responsible for kernel trimming, kernel porting, cross-compilation, kernel debugging, writing bootloader programs, creating and integrating the root file system, and deploying the Linux system. (2) Salary Level: Salary ranges are similar to the previous two positions. In first-tier cities, engineers with 3-5 years of experience earn between 15,000 and 25,000 yuan per month; in second-tier cities, the range is 10,000 to 18,000 yuan. As experience and technical skills increase, there is significant potential for salary growth. (3) Required Skills: System Knowledge and Processes: In-depth understanding of Linux system-related knowledge, familiar with the entire system development process from the kernel to the file system and boot process. Compilation and Debugging Skills: Proficient in cross-compilation and kernel debugging, which are essential steps in system development. Development Environment Setup: Ability to set up a Linux software development environment, including cross-compilation of library files and environment configuration.
4. Embedded Linux Application Development Engineer (1) Job Responsibilities: Application Design and Development: Design, develop, and implement embedded application software on the Linux platform to meet various user needs. Testing and Maintenance: Test the developed applications, promptly identify and resolve issues, and perform maintenance and upgrades in the later stages. Technical Documentation Writing: Write design documents during the development process to facilitate team collaboration and future maintenance. (2) Salary Level: In first-tier cities, fresh graduates earn around 8,000 to 12,000 yuan per month, and after 3-5 years of experience, their salary can reach 12,000 to 20,000 yuan. In second-tier cities, fresh graduates earn 6,000 to 9,000 yuan per month, and engineers with 3-5 years of experience earn 9,000 to 15,000 yuan. (3) Required Skills: Linux System and Development Tools: Proficient in the Linux operating system, familiar with common development tools such as VI editor, GCC compiler, GDB debugger, and Make project management tools. Programming Languages: Proficient in C language, with a grasp of object-oriented programming concepts and basic knowledge of C++. Application Development Knowledge: Familiar with program design under embedded Linux, including system programming, file I/O, multi-process and multi-threading, network programming, GUI programming, and databases.