Full-Time

Software Engineer

Drivers & Virtualization

Arago

Arago

11-50 employees

Photonic AI chips for energy efficiency

No salary listed

Île-de-France, France

In Person

Master's, PhD

Category
Software Engineering (1)
Required Skills
QEMU
Machine Learning
Linux/Unix

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Requirements
  • A Master's or PhD degree in Computer Science, Computer Engineering, or a related field is required.
  • Deep knowledge of operating system internals, particularly kernel memory management and I/O paths, is required.
  • A strong understanding of memory safety requirements in kernel space is required.
  • Hands-on experience in Linux kernel driver development and kernel modules is required.
  • A solid understanding of virtualization fundamentals, including KVM and hypervisors, is required.
  • Practical experience with emulation frameworks, specifically QEMU internals or custom device models, is required.
  • Familiarity with PCIe, DMA, MMIO, and IOMMU hardware-level protocols is required.
  • Proficient English language skills are required.
Responsibilities
  • Develop and maintain high-performance Linux kernel drivers for Arago’s proprietary accelerator.
  • Implement communication protocols and virtual device interfaces to bridge hardware and software.
  • Manage low-level hardware interactions including PCIe, DMA, MMIO, and interrupt handling.
  • Enable seamless virtualized access to accelerators using QEMU and KVM.
  • Design and implement robust device sharing, passthrough, and isolation mechanisms.
  • Ensure the security of accelerator operations through strict memory protection and resource isolation.
  • Debug complex failures spanning the hardware, kernel, hypervisor, and guest operating system layers.
  • Support scaling the architecture from single-device setups to large-scale multi-device deployments.
Desired Qualifications
  • French language proficiency is a plus.

Arago develops energy-efficient AI hardware using photonic technology. It builds a proprietary photonic processor called JEF that processes data with light instead of electricity, aiming to cut AI compute energy use by 10x–30x while delivering comparable performance to current GPUs. The processor combines photonics, electronics, and software in a hybrid architecture, and is paired with a software stack named CARLOTA that lets AI developers run models on standard frameworks like PyTorch without changing code. This makes it easier to deploy photonic acceleration in AI workloads. Arago differentiates itself by targeting substantial energy savings at scale through photonic computing and by providing an integrated toolchain that abstracts hardware complexity for researchers and developers. Its goal is to reduce the energy consumption of AI computations in data centers and other compute-intensive environments, enabling high-performance AI with lower power use.

Company Size

11-50

Company Stage

Seed

Total Funding

$24.3M

Headquarters

Paris, France

Founded

2024

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Simplify Jobs

Simplify's Take

What believers are saying

  • Arago closed a 26-million-dollar seed in July 2025 from Earlybird, Protagonist, Visionaries Tomorrow.
  • Its team grew from 20 to 40 employees by June 2026, accelerating execution.
  • CNBC reported April 2026 investor appetite for European AI-chip startups, including Arago.

What critics are saying

  • Lightmatter raised 400 million dollars in October 2025, outgunning Arago on capital.
  • Ayar Labs, Marvell, and NVIDIA already own photonics supply chains Arago still lacks.
  • If JEF misses engineering-sample milestones in 2026, Arago becomes a science project.

What makes Arago unique

  • JEF uses photons for matrix math and electronics for control, cutting GPU energy.
  • CARLOTA plugs into PyTorch, letting teams adopt Arago without rewriting model code.
  • Paris, Palo Alto, and Tel Aviv give Arago transatlantic engineering access and recruiting reach.

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Benefits

Health Insurance

Stock Options

Relocation Assistance

Paid Vacation

Commuter Benefits

Professional Development Budget

Growth & Insights and Company News

Headcount

6 month growth

14%

1 year growth

14%

2 year growth

25%
Dataweek
Aug 27th, 2025
Arago raises $26M for photonic AI chip

Arago, a deeptech startup, has raised $26 million in seed funding to commercialize its photonic AI chip, 'JEF'. This chip uses lasers to process data with photons, offering 10x lower energy consumption than current GPUs. Arago's technology is compatible with existing AI ecosystems and aims to revolutionize AI compute infrastructure. The funding will accelerate product development, expand the team, and enhance business partnerships across France, North America, and Israel.

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EU-Startups
Jul 8th, 2025
French DeepTech company Arago raises €22.1 million to slash AI energy consumption with photonic chip | EU-Startups

Arago, a Paris-based DeepTech startup pioneering a new class of energy-efficient AI chips powered by light, has raised €22.1 million in Seed funding to

Maddyness
Jul 8th, 2025
Arago AI raises $26M for energy-efficient AI

Arago, a French startup, has raised $26 million to address the high energy consumption of AI by developing a photonic processor named "JEF." Founded in April 2024, Arago aims to reduce energy use by utilizing lasers to process data with photons, which generate less heat than traditional electrons. This technology promises to be ten times more energy-efficient than current GPUs. The funding round was led by Earlybird, Protagoniste, and Visionaries Tomorrow, with participation from notable tech figures.