❓ About SiPearl…

SiPearl is the European fabless designer of sovereign secure high-performance energy-efficient CPUs for HPC, AI and data centres. These CPUs will help address strategic challenges in the fields of security, defence, medical research, energy, climate and engineering with a reduced environmental footprint.

In June 25, SiPearl completed the design of the most complex CPU ever designed in Europe, Rhea1. Featuring 80 Arm Neoverse V1 cores, with 61 billion transistors, it is currently in production at TSMC. Sipearl CPUs will equip the two first European exascale supercomputers belonging to EuroHPC JU: Rhea1 will be integrated into the JUPITER machine based in Germany and Rhea2 will be part of Alice Recoque in France.

Incubated within the European Processor Initiative (EPI) consortium and seed-funded by the European Union, SiPearl employs almost 200 people in :

• France (Maisons-Laffitte, Grenoble, Massy, Sophia Antipolis),

• Spain (Barcelona)

• and Italy (Bologna)

Following a €130 million Series A, the company has launched its Series B round.

💻 About the role

In this role, you will work closely with the System & Software Architecture Team Leader and the R&D System & Software teams to define, document and drive software architecture for cutting-edge HPC systems, while contributing to collaborative projects with industrial and academic partners.

🎯 What a typical day at work might look like

• Defining and updating software architecture specifications based on internal requirements, partner inputs, and industry standards
• Supporting software development teams by answering technical questions and providing architecture guidance and implementation models
• Collaborating with partners and standards bodies (e.g. Arm, Nvidia, AMD, CXL, OCP) and contributing to joint projects
• Participating in technology watch activities, including partner presentations, seminars, and conferences
• Sharing technical expertise internally and contributing to working groups and standards discussions

🔍 What will help you succeed in this role

• Strong experience in software architecture within complex systems (HPC, servers, embedded systems)
• Excellent knowledge of ARM architectures, Linux-based software development, and low-level programming
• Ability to translate complex technical requirements into clear and structured architecture documentation
• Strong communication skills to collaborate with multidisciplinary teams and external partners
• A proactive mindset, with the ability to anticipate risks and propose solutions

➕ Experience in the following areas is a plus

• High Performance Computing (multicore architectures, low-latency and high-bandwidth interfaces)

• Cache coherency protocols and standards (CXL, OFI, NVLink, UALink, UEFI, ACPI)

• Server hardware interfaces (PCIe, DDR, HBM, SPI, I2C)

• Participation in industry standards working groups or collaborative R&D projects

• High performance networking (OFI Libfabric)

• Open Compute Project standards

Dear candidate, even if you consider you do not fulfill all the qualifications mentioned above, please still apply and share with us why you believe you would be a good fit.

Recruitment process

✔️Discovery interview with our Talent Acquisition Partner (30 min)

✔️AssessFirst personality test - no need to worry, there is no wrong or right answer; our goal is to see beyond your resume (45')

✔️2 Technical interviews (1h each)

✔️Interview with one HRBP in order to answer to your last questions (30 min)

💡 Benefits and conditions

• Contract: Permanent Contract (CDI)

• Benefits: annual bonus*; meal vouchers (60% covered by SiPearl); health insurance (70% covered by SiPearl); illimited access and pre-paid sessions with a practitioner of your choice 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: This role is open for our locations in France (Maisons-Laffitte, Massy, Grenoble and Sophia Antipolis), Spain (Castelldelfels - Barcelona)

• ⚠️ 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.

Are you curious to learn more about us?

• Follow us on LinkedIn to stay updated with our latest news

• Get updated about our recruiting activities: Sipearl careers webpage

• Get to know a bit 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.