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Arago

Arago

Photonic AI chips for energy efficiency

Mixed-Signal IC Design Engineer

Full-Time
No salary listed
Mid
Île-de-France, France
In Person

About the job

Requirements
  • Strong experience in digital RTL design using Verilog and SystemVerilog, particularly for mixed-signal systems involving high-speed calibration and control loops, converters, multiplexers, and serial or parallel data paths.
  • Experience with analog integrated-circuit development environments such as Virtuoso or an equivalent tool.
  • Deep understanding of digital-analog integration challenges, including timing closure, noise coupling, clock-domain crossing, and analog-aware floorplanning in high-speed environments.
  • Proven ability to drive digital blocks through design, verification, synthesis, floorplanning, place-and-route, and tape-out, especially for analog or radio-frequency integrated circuits.
  • Skill in integrating and adapting external intellectual-property blocks such as GPIOs, LVDS, and SPI/I²C interfaces.
  • Proficiency with industry-standard electronic-design-automation toolchains for front-end design and verification and back-end physical implementation, including mixed-signal layout constraints.
  • Proficient English language skills.
Responsibilities
  • Design and verify digital subsystems that interface directly with high-speed analog and mixed-signal circuits, including calibration engines, control finite-state machines, data converters, and multiplexing logic.
  • Contribute to the design of analog components at the digital-analog interface, including calibration circuits, digital-to-analog converters, analog-to-digital converters, and comparators.
  • Integrate and customize external intellectual-property blocks, including GPIOs, LVDS inputs and outputs, and serial interfaces, while ensuring compliance with analog signal and timing requirements.
  • Lead the digital implementation flow for mixed-signal blocks from register-transfer-level design through synthesis, floorplanning, place-and-route, timing closure, physical signoff, and tape-out.
  • Collaborate with analog, layout, and system teams to co-optimize digital-analog boundaries, resolve cross-domain issues, and ensure robust high-speed performance.
  • Contribute to the development of high-speed serial input/output subsystems.
Desired Qualifications
  • Experience designing and implementing serializer/deserializer blocks.
  • French language skills.

About the company

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's Take

What believers are saying

  • Arago raised $26 million in July 2025 from Earlybird, Protagonist, and Visionaries Tomorrow.
  • April 2026 Synopsys and Cadence partnerships broaden access to critical EDA and IP.
  • Station F and GlobalFoundries publicized Arago’s first digital-optical chip, amplifying hiring and customer interest.

What critics are saying

  • GPU incumbents keep getting cheaper and faster, squeezing Arago before 2027 commercialization.
  • Photonic chips need flawless silicon-photonics integration; one yield miss can reset Arago's roadmap.
  • If JEF misses production customers after the 2026 tape-out, Arago becomes a science project.

What makes Arago unique

  • Arago’s April 2026 tape-out with GlobalFoundries validates standard-silicon photonic AI manufacturing.
  • JEF combines photons and electronics, targeting 10x-30x lower energy than GPUs.
  • CARLOTA hides photonic complexity and plugs into PyTorch without code rewrites.

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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

7%

1 year growth

7%

2 year growth

18%
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.