Senior Performance Software Engineer

The Role Openchip is building exciting new RISC-V chips with AI and HPC acceleration. As a Senior Perfomance Software Engineer you will play a crucial role in our performance team, optimizing popular AI and HPC applications and benchmarks to deliver best in class performance, and work with customers to optimize their workloads. Key Responsibilities

• Make independent technical contributions to help their team deliver its commitments. In particular:

– Optimize AI, HPC, and other workloads and benchmarks for our RISC-V silicon with vector extensions. – Identify bottlenecks with workload characterization and drive implementation of solutions. – Decompose applications and how they run on the underlying hardware. – Understand performance at a system level, from CPU, memory, storage, power utilization, etc. – Profile and optimize on our pre-silicon (simulators, emulators, FPGAS), and silicon environments. – Troubleshoot and root cause analysis, to resolve performance issues. – Optimize HPC and AI libraries and runtimes. – Work with customers to optimize their important workloads for our architecture. – Contribute to instrumentation of performance and power at the operating system level. – Integrate with CI/CD to automate performance benchmarking. – Present findings to senior technical leaders at our company and at industry conferences. – Contribute upstream where appropriate.

• Interact with colleagues across projects to unblock issues, or to reach consensus on technical topics. In particular:

– Work with hardware teams, influencing hardware/software co-design. – Work with teams developing compilers, firmware, AI stacks, middleware, etc., and contribute as necessary. – Collaborate with colleagues through code reviews, bug triaging, design documents,... – Contribute to shared team responsibilities (CI failure triaging, documentation, code fixits, rotations...). Required Qualifications

• Bachelor or Master’s degree in a relevant field.
• Experience in the relevant field (3-5yr).
• Solid knowledge about computer architecture (CPU, cache, memory hierarchy, buses, etc.).
• Proven experience with performance optimizaiton, and experience with performance profiling and analysis tools (Linux perf, iperf, lmbench, sysbench, flamegraphs, JMeter, LoadRunner, Gatling, Intel (R) VTUNE, ARM SPE, etc.).
• Solid knowledge of low-level development languages (C, C++, Rust, etc.).
• Experience with assembly language (any architecture).
• Experience with performance benchmarks (CoreMark, FPMark, LMBench, Stream, SPEC CPU, SPEC INT, graph500, CORAL, HPGMG, CoMD, Linpack, SuiteSparse Matrix Collection, MLPERF, ResNet, BERT etc.).
• Solid understanding of operating systems, databases, networking, and cloud technologies.
• Experience with bare metal (without OS) development for embedded systems and microcontrollers.
• Experience with standard tools for source control (git), continuous integration, task management (Jira).

Soft Skills

• Team player: communicative and collaborative person who focuses on the outcome of the team above the individual needs.
• Curious about learning new technologies/stacks.
• Capable of within- and cross-team collaboration at the technical level.
• Can-do attitude, proactive and willing to step up and resolve any obstacle. Self-aware, self-starter, and self-motivated.
• Strong problem-solving skills with the ability to troubleshoot and identify complex issues.

Preferred Qualifications

• Experience with machine learning and/or HPC performance optimization.
• Experience with Fortran.
• Experience with RISC-V development at the assembly-language level.
• Experience with statistical analysis.
• Experience with emulators and simulators (Qemu, Gem5, Spike).
• Experience in containerized environments (Docker, Kubernetes).
• Experience with hypervisor technology (KVM, Xen).
• Experience with open source software development.

We are looking for outstanding people willing to join our mission to change this industry and help to build a better world. If you feel identified with Openchip, please contact us. We can offer a competitive compensation package in a flexible work schema that will help you to keep a balance between your personal and professional life. At Openchip & Software Technologies S.L., we believe a diverse and inclusive team is the key to groundbreaking ideas. We foster a work environment where everyone feels valued, respected, and empowered to reach their full potential – regardless of race, gender, ethnicity, sexual orientation, or gender identity.