Join FlexAI: 

FlexAI is at the forefront of revolutionizing AI computing by reengineering infrastructure at the system level. Our groundbreaking architecture, combined with sophisticated software intelligence, abstraction, and an orchestration layer, allows developers to leverage a diverse array of compute, resulting in efficient, more reliable computing at a fraction of the cost. We are seeking a skilled and experienced Senior System Engineer

Founded by Brijesh Tripathi and Dali Kilani, who bring experience from Nvidia, Apple, Tesla, Intel, Lifen, and Zoox, FlexAI is not just building a product – we’re shaping the future of AI. Our teams are strategically distributed across Paris, Silicon Valley, and Bangalore, united by a shared mission: to deliver more compute with less complexity.

If you're passionate about shaping the future of artificial intelligence, driving innovation, and contributing to a sustainable and inclusive AI ecosystem, FlexAI is the place for you !
 

What we are looking for:

We are seeking a highly skilled and experienced Senior System Engineer to join our engineering team. The ideal candidate will have deep expertise in Linux kernel development, profiling, and debugging with a strong focus on system performance optimization. This role requires a strong understanding of low-level system internals, memory subsystems, networking, and hardware/software interactions across x86 and ARM architectures. The successful candidate will work closely with multiple teams to enhance system performance, debug complex issues, and contribute to the optimization of AI and HPC environments.


What you’ll do:

Kernel and System-Level Development:
- Develop and optimize Linux kernel components, ensuring high performance and stability.
- Profile and debug device drivers, focusing on memory access efficiency and system bottlenecks.
- Improve memory subsystem performance, addressing paging, caching, and NUMA-related optimizations.

Performance Optimization and Debugging:
- Conduct deep system profiling, leveraging tools like perf, eBPF, ftrace, and Valgrind.
- Optimize compiler performance and code generation for x86 and ARM architectures.
- Identify and resolve performance bottlenecks in networking, storage, and compute subsystems.
- Enhance machine learning workloads and GPU performance when applicable.

Networking and High-Performance Communication:
- Work on high-speed networking technologies including RDMA, RoCE, InfiniBand, and high-throughput Ethernet.
- Debug and optimize low-latency communication stacks for AI and HPC workloads.
- Open-Source Contributions and Collaboration:
- Contribute to open-source Linux kernel and system projects.
- Engage with the Linux community to upstream patches and improvements.
- Collaborate with internal teams to enhance system integration and performance.

CI/CD and Automation:
- Define and maintain CI workflows for system testing and validation.
- Automate system profiling and benchmarking processes.
- Ensure robust CI pipelines for kernel and driver updates.


What you’ll need to be successful:

Educational Background:
Bachelor's or Master's degree in Computer Science, Electrical Engineering, or a related field.

Technical Skills:

- Expertise in Linux kernel development, profiling, and debugging.
- Strong understanding of memory subsystems, caching, NUMA architectures, and low-level memory management.
- Experience profiling device drivers and memory access patterns.
- Strong background in system architecture for both x86 and ARM targets.
- Deep knowledge of compiler optimizations and low-level code efficiency.
- Proficiency in C, C++, Python, and Bash scripting.
- Hands-on experience with networking technologies (RDMA, RoCE, InfiniBand).
- Familiarity with machine learning profiling and GPU acceleration is a plus.
- Knowledge of CI/CD workflows for system software.

Professional Experience:
- 10+ years of experience in system engineering, kernel development, or low-level software engineering.
- Proven track record in debugging and optimizing Linux-based systems.
- Open-source contributions to the Linux kernel or system-related projects.

Soft Skills:
- Strong problem-solving and analytical skills.
- Ability to troubleshoot complex system issues independently.
- Excellent communication and collaboration abilities.
- Comfortable working in remote and distributed teams.

Preferred Qualifications:
- Experience in AI infrastructure and HPC environments.
- Knowledge of performance benchmarking and system monitoring tools.
- Familiarity with modern development practices and Agile methodologies.

Why Join Us?

At FlexAI, you’ll work with a team of world-class engineers solving some of the most challenging problems in AI infrastructure and system performance. If you’re passionate about low-level optimization, Linux kernel development, and high-performance computing, we’d love to hear from you.

What we offer:

• A competitive salary and benefits package, tailored to recognize your dedication and contributions.
• The opportunity to collaborate with leading experts in AI and cloud computing, learning from the best and the brightest, fostering continuous growth.
• An environment that values innovation, collaboration, and mutual respect.
• Support for personal and professional development, empowering you with the tools and resources to elevate your skills and leave a lasting impact.
• A pivotal role in the AI revolution, shaping the technologies that power the innovations of tomorrow.
  
  Offices :Our teams are strategically distributed across three continents—Europe, North America, and Asia—united by a shared mission: to deliver more compute with less complexity.
  - Paris - HQ
  - San Francisco (Bay Area) - US office
  - Bangalore - India office
  
  Apply NOW!
  
  You’ve seen what this role entails. Now we want to hear from you! Does this opportunity align with your aspirations? If you’re even slightly curious, we encourage you to apply – it could be the start of something extraordinary!
  
  At FlexAI, we believe diverse teams are the most innovative teams. We’re committed to creating an inclusive environment where everyone feels valued, and we proudly offer equal opportunities regardless of gender, sexual orientation, origin, disabilities, veteran status, or any other facets of your identity that make you uniquely you.