[Permanent position] Benchmark Cloud&HPC engineer, Maisons-Laffitte

Company Overview SiPearl is the European fabless designer of sovereign secure high-performance energy-efficient CPUs for HPC, AI, and data centres. These CPUs address strategic challenges in security, defence, medical research, energy, climate, and engineering while reducing environmental footprint.

In June 2025, we completed the design of the most complex CPU ever designed in Europe, Rhea1, featuring 80 Arm Neoverse V1 cores and 61 billion transistors, now in production at TSMC. Rhea1 will be integrated into the EuroHPC JU exascale supercomputer JUPITER, and Rhea2 will be part of Alice Recoque.

Incubated within the European Processor Initiative (EPI) Consortium and seed-funded by the European Union, we employ almost 200 people in France (Maisons-Laffitte, Grenoble, Massy, Sophia Antipolis), Spain (Barcelona), and Italy (Bologna). Following a€130 million Series A, we launched a Series B round.

About the role As a Benchmark Engineer, you will work closely with the Benchmark Team Leader and the R&D System&Software teams to test, analyse, and optimise benchmark and application codes for pre-silicon, simulation and silicon performance analysis of SiPearl processors, and contribute to collaborative partner projects.

Your missions

Analyse and optimise benchmark and application codes to leverage SiPearl processor architectures

Design, run, and monitor test scenarios; collect and validate performance results

Produce detailed performance analyses and forecasts for pre-silicon, simulation and silicon phases

Identify and fix software issues impacting benchmarks and applications

Package, document and present benchmark results and improvements internally and externally

Contribute to collaborative R&D projects with academic and industrial partners

What will help you succeed

Strong experience in benchmarking and performance analysis in Cloud and/or HPC environments

Solid knowledge of programming languages and parallel computing models (C, C++, Fortran, OpenMP, MPI)

Good understanding of processor architectures (Aarch64, x86)

A rigorous and analytical mindset, with the ability to interpret performance data and propose optimisations

Strong collaboration and communication skills in an international environment

Experience that is a plus

Pre-silicon, simulation or silicon performance evaluation

Benchmark development, validation and packaging

Participation in collaborative research or industrial projects

Supervision or mentoring of trainees

Recruitment process

Discovery interview with our Talent Acquisition Partner (30 min)

AssessFirst personality test– no wrong or right answer (45 min)

Two technical interviews (1 h each)

Interview with an HRBP to address remaining questions (30 min)

Benefits and conditions

Contract: Permanent Contract

Benefits: annual bonus*; meal vouchers (60% covered by SiPearl); health insurance (70% covered by SiPearl); unlimited access and pre-paid sessions with a practitioner on our mental health partner app, moka.care; technical, linguistic and personal development training; BSPCE

Work model: On-site or Hybrid (2 days/week remote)

Office: France (Maisons-Laffitte, Massy, Grenoble and Sophia Antipolis), Spain (Castelldelfels– Barcelona), Italy (Bologna)

Please note that while we do not provide VISA sponsorship, we are committed to assisting international candidates with the visa application process to the best of our ability.

Join us

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Get updates about our recruiting activities on the SiPearl careers webpage

Learn more about our team culture: Welcome to the Jungle

At SiPearl, we are dedicated to building a diverse and inclusive workplace that thrives on the strength of varied perspectives and backgrounds. We recruit talent based on merit, experience, and alignment with our company's goals and values.

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