Senior Software Developer (C – Linux Kernel & User Space)
Job ID: ID linux_kernel
Full time
Bucharest
Senior
02-07-2026
We are seeking a highly skilled Senior Software Developer with strong expertise in C programming to work across Linux kernel space and user space components. The role involves designing, developing, optimizing, and maintaining low-level system software, with a focus on performance, reliability, and security.
You will work closely with cross-functional teams including system architects, QA, and hardware engineers to build robust and scalable system-level solutions.
Employer Profile
A leading global provider of hardware and software for electronic design, emulation, and testing
Responsibilities
Core Development
Design, develop, and maintain software components in C for both:
Kernel space (Linux kernel modules, drivers, subsystems)
User space applications, daemons, and system services
Implement high-performance and low-latency solutions with attention to memory and CPU efficiency
Develop and maintain device drivers, kernel modules, and system-level interfaces
System-Level Engineering
Work with Linux internals (process scheduling, memory management, IPC, networking stack)
Debug complex issues across kernel and user space boundaries
Analyze system performance and implement optimizations
Debugging & Troubleshooting
Investigate and resolve issues using tools such as:
gdb, strace, perf, ftrace
Kernel crash dumps (kdump, crash tool)
Root cause analysis for system crashes, memory leaks, and race conditions
Integration & Collaboration
Collaborate with hardware teams for driver development and bring-up
Work with DevOps and QA to integrate solutions into CI/CD pipelines
Participate in design reviews and contribute to architectural decisions
Code Quality & Security
Write clean, maintainable, and well-documented code
Ensure adherence to coding standards (e.g. Linux kernel guidelines where applicable)
Address vulnerabilities and ensure secure coding practices
Requirements
Required Qualifications
Bachelor’s or Master’s degree in Computer Science, Engineering, or equivalent experience
5–10+ years of professional experience in C programming
Strong experience with:
Linux kernel development
User space system programming
Solid understanding of:
Operating systems concepts (processes, threads, memory, synchronization)
POSIX APIs, system calls, and low-level I/O
Experience with:
Kernel module development and debugging
Multithreading and concurrency primitives
IPC mechanisms (pipes, sockets, shared memory)
script languages (bash/python);
Preferred Qualifications
Experience with embedded Linux systems
Knowledge of cross-compilation and toolchains
Familiarity with networking protocols and kernel networking stack
Experience with:
Build systems (Make, CMake, Yocto, Buildroot)
Version control systems (Git, GitLab/Bitbucket workflows)
Exposure to security concepts (SELinux, secure boot, sandboxing)
Hardware interfaces knowledge – PCIE, XFI, ILK, GMII would be appreciated
Soft Skills
Strong analytical and problem-solving skills
Ability to work independently and in a collaborative team environment
Clear communication and documentation abilities
Proactive mindset with ownership of task
Benefits
What we offer
Opportunity to work on low-level, high-impact system software
Exposure to cutting-edge kernel and performance optimization challenges
