Senior Software Engineer - HPC & Low-Level Systems

Job Description

About Clockwork Systems

Clockwork.io – Software Driven Fabrics to increase GPU cluster utilization

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 fabrics by delivering cross-stack observability to catch and quickly resolve problems, workload fault tolerance to keep jobs running through failures, and performance acceleration that dynamically routes and paces traffic to avoid congestion.To learn more, visit 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 debuggingNice 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 architectureEnjoy

Challenging projects.

Competitive compensation.

A great benefits package.

A friendly and inclusive workplace culture.

Catered lunches.

Compensation for this position will vary based on the skills and experience you bring, as well as internal equity considerations. For candidates hired at the posted level, the expected base salary range is $150,000 - $230,000. The offered compensation package may also include stock options or other equity awards, subject to Clockwork's equity program and applicable approvals.

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 race, color, ancestry, religion, age, sex, sexual orientation, gender identity or expression, national origin, disability, or protected veteran status. We believe diversity drives innovation, and we grow stronger together.

Full-time