
SiPearl is a European semiconductor company focused on designing high-performance, energy-efficient processors for supercomputing and Artificial Intelligence (AI). Founded by Philippe Notton in June 2019, the company is bringing to life the European Processor Initiative (EPI) project with the goal of fostering European technological sovereignty in critical sectors like defense, security, health, energy, and climate. Their processors are designed to be backdoor-free and kill switch-free, contributing to a reduced carbon footprint. SiPearl's strategy involves close collaboration with over 30 partners from the EPI consortium, which includes scientific communities, supercomputing centers, and leading IT, electronics, and automotive companies. The company's first-generation processor, Rhea1, is based on the Arm Neoverse V1 platform and targets the EuroHPC Joint Undertaking ecosystem, aiming to enable European supercomputers to reach exascale power. SiPearl has secured significant funding, including a Series A round of €90m to launch Rhea1, with investors such as Arm, Atos Group (Eviden), the European Innovation Council (EIC) Fund, and the French State. They have also established key technological partnerships with Arm, Siemens Digital Industries Software, and Ansys, and manufacturing agreements with TSMC. SiPearl's first major customer contract is to equip the JUPITER exascale supercomputer.

SiPearl is a European semiconductor company focused on designing high-performance, energy-efficient processors for supercomputing and Artificial Intelligence (AI). Founded by Philippe Notton in June 2019, the company is bringing to life the European Processor Initiative (EPI) project with the goal of fostering European technological sovereignty in critical sectors like defense, security, health, energy, and climate. Their processors are designed to be backdoor-free and kill switch-free, contributing to a reduced carbon footprint. SiPearl's strategy involves close collaboration with over 30 partners from the EPI consortium, which includes scientific communities, supercomputing centers, and leading IT, electronics, and automotive companies. The company's first-generation processor, Rhea1, is based on the Arm Neoverse V1 platform and targets the EuroHPC Joint Undertaking ecosystem, aiming to enable European supercomputers to reach exascale power. SiPearl has secured significant funding, including a Series A round of €90m to launch Rhea1, with investors such as Arm, Atos Group (Eviden), the European Innovation Council (EIC) Fund, and the French State. They have also established key technological partnerships with Arm, Siemens Digital Industries Software, and Ansys, and manufacturing agreements with TSMC. SiPearl's first major customer contract is to equip the JUPITER exascale supercomputer.
Founded / CEO: 2019 — Philippe Notton
Flagship product: Rhea1 processor family (Arm Neoverse V1; samples available early 2026; manufactured at TSMC)
Primary markets: High-performance computing (HPC), AI, data centres — target: European exascale (JUPITER)
Recent funding: €130M Series A final close (2025-07-08)
Headcount: 167 employees (profile data)
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Design and supply of sovereign, energy-efficient, high-performance processors for HPC, AI, and data-centre workloads.
2019
Semiconductor Manufacturing
€130,000,000
Definitive closing with a third tranche; finalises Series A.
€23,000,000
Described as €15m equity plus €8m syndicated bank loan.
€90,000,000
Included up to €25m convertible debt from the EIB (with €10m ultimately subscribed).
€17,500,000
Comprised of a €2.5m grant plus up to €15m in equity investments via the EIC Fund; described as the first direct investment of the EIC Fund.
€7,400,000
Grant funding cited at operational launch / design start timeframe.
“Investor mix includes strategic corporate investors (Arm, Eviden/Atos), public-sector innovation funds and programs (EIC Fund, France 2030), financial institutions (EIB, Caisse d'Epargne Rhone Alpes), and venture participation (Cathay Venture).”
Founded in 2019 with the support of the European Union 🇪🇺, SiPearl embodies Europe's dream of mastering the technological heart of its supercomputers: the microprocessor.
SiPearl is building Rhea, the high-performance, low-power European microprocessor dedicated to supercomputing and AI inference.
This new generation of microprocessors will first target EuroHPC Joint Undertaking ecosystem, which is deploying world-class supercomputing infrastructures in Europe for solving major challenges in medical research, artificial intelligence, security, energy management and climate with a reduced carbon footprint.
SiPearl is working in close collaboration with its 30 partners from the European Processor Initiative (EPI) consortium - leading names from the scientific community, supercomputing centers and industry - which are its stakeholders, future clients and end-users.
SiPearl employs more than 190 people in:
At SiPearl, we are developing highly complex multi-chiplets/multi-sockets CPUs, based on latest technologies for processors, NoCs and overall architecture. Those need best in class emulation platforms, and that's what our team is proud to provide.
SiPearl owns one of the biggest emulation platform in Europe (in-house), a dual Veloce StratoM+, with a total capacity of 128 boards (6BGates) and up to 30 concurrent users 24/7.
As a Senior Emulation Engineer at SiPearl, you will be at the heart of our projects and R&D, and an enabler for all teams success. You will have a key and highly visible lead role to drive a team, deploy new projects, and ensure the highest quality of platform deliveries.
We even model our physical evaluation board (BMC) to shift left the Firmware and Software development pre-silicon and validate pre-tape-out the entire software stack.
As a Senior Emulation Engineer at SiPearl, you will be at the heart of our projects and R&D, and an enabler for all teams success. You will have a key and highly visible lead role to drive a team, deploy new projects, and ensure the highest quality of platform deliveries.
Your missions:
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)
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?
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.