Senior Software Engineer - HPC & Low-Level Systems

Job DescriptionJob DescriptionAbout Us

Clockwork.io – A Software-Driven Revolution in AI Networking

Clockwork Systems was founded by Stanford researchers and veteran systems engineers who share a vision for redefining the foundations of distributed computing. As AI workloads grow increasingly complex, traditional infrastructure struggles to meet the demands of performance, reliability, and precise coordination. Clockwork is pioneering a software-driven approach to AI networking, delivering deterministic time, ultra-low latency, and seamless scalability for modern distributed systems.

To learn more, visit www.clockwork.io.

About Us

Clockwork.io – A Software-Driven Revolution in AI Networking

Clockwork Systems was founded by Stanford researchers and veteran systems engineers who share a vision for redefining the foundations of distributed computing. As AI workloads grow increasingly complex, traditional infrastructure struggles to meet the demands of performance, reliability, and precise coordination. Clockwork is pioneering a software-driven approach to AI networking, delivering deterministic time, ultra-low latency, and seamless scalability for modern distributed systems.

To learn more, visit www.clockwork.io.

What you will do

Use your knowledge and experience to lead/contribute directly to the design and build of high performance, reliable and scalable systems.

You bring

• At least 5 years of experience with C/C++ systems programming
• Deep knowledge of Linux internals (e.g., system calls, memory management, kernel modules)
• Strong foundation in concurrent programming and synchronization techniques
• Strong understanding of the TCP/IP stack, socket programming, and low-latency networking (e.g., RDMA, DPDK, XDP)
• Strong understanding of memory hierarchy, CPU caches, multi-core architectures, and GPUs
• Strong skills in systems design, performance analysis, and low-level debugging

Nice to Have

• Contributions to open-source HPC libraries or Linux kernel subsystems
• Experience with performance tuning of large-scale HPC clusters
• Experience with MPI, RPC frameworks, or distributed runtimes
• Experience with NCCL, CUDA and GPU Kernels
• Knowledge of RDMA APIs (e.g., libibverbs) and transport semantics
• Experience with NIC drivers or NIC architecture

Enjoy

• Challenging projects.
• Competitive compensation.
• A great benefits package.
• A friendly and inclusive workplace culture.
• Catered lunches.
• Working in the heart of Silicon Valley.

Clockwork Systems is an equal opportunity employer. We are committed to building world-class teams by welcoming bright, passionate individuals from all backgrounds. All qualified applicants will receive consideration for employment without regard to , , ancestry, , , , , or expression, , , or protected veteran status. We believe drives innovation, and we grow stronger together.