PIC Design Engineer, Massy

Quandela is a European deeptech scale-up building

modular, scalable and energy-efficient photonic quantum computers.

With more than 140 people, we develop our own hardware technologies—

from single-photon sources to photonic integrated circuits (PICs)

— and make them accessible via cloud and on-premise systems.

At the core of our processors are Photonic Integrated Circuits (PICs): compact optical chips that route and manipulate single photons to perform quantum operations at scale.

About this position: You will join the

Integrated Photonics team

in Massy, composed of senior engineers, PhDs, and research interns working across design, characterization, and packaging of our PICs.

The team owns the

full design cycle

of our photonic circuits— from simulation and layout to foundry collaboration and performance feedback. Fabrication is outsourced, but

simulation depth, architectural choices, and design-for-manufacturing decisions are fully internal .

You will design and optimize

key building blocks

of our PIC platform, translating system requirements into

robust and manufacturable layouts

that support the evolution of our processors. Working closely with characterization, you will

iteratively refine your designs

based on fabrication variability and experimental feedback.

The coming year is strongly design-driven, with a focus on improving

robustness against fabrication variability,

increasing integration density, and preparing architectural evolutions for future

scalable quantum processors.

Why this role matters: What you design today directly shapes the

scalability, stability, and performance

of tomorrow’s photonic quantum processors.

Your work directly impacts how efficiently our circuits scale, how resilient they remain under fabrication variability, and how quickly research concepts become reliable hardware.

As Quandela grows, this role helps shape not only components, but also the

design methodologies and standard s that will support larger-scale and fault-tolerant quantum architectures.

Requirements

What will you do? Design and simulate photonic components

Perform electromagnetic and thermal simulations ( Lumerical required ; Tidy3D or similar is a plus)

Analyze trade-offs between loss, footprint, fabrication tolerance, and performance

Design and optimize waveguides, interferometers, beam splitters, phase shifters, and reconfigurable elements

Contribute to next-generation components, including high-speed and new-material integrations

Translate simulations into manufacturable layouts

Generate mask layouts using

GDS-based tools

Prepare designs for tape‑out with external foundries

Ensure designs remain compatible with real fabrication constraints

Collaborate with characterization

Analyze measured data against simulations and identify performance gaps

Refine models and layouts based on fabrication and experimental feedback

Contribute to continuous performance improvements

How you’ll grow? 0‑3 months → Understand our simulation environment and reproduce existing component designs.

3–6 months → Lead a full simulation‑to‑layout cycle on a defined component.

6–12 months → Contribute to design improvements and take part in next‑generation component development, supporting the transition toward higher‑speed reconfiguration regimes and tighter performance constraints.

Longer term→ Take ownership of architectural blocks or contribute to defining structured design methodologies as our PIC platform evolves toward larger and fault‑tolerant systems.

What we’re looking for: Must‑have

Master’s or PhD in Photonics, Physics, Electronic Engineering or related field

Hands‑on experience in

PIC simulation

(Lumerical strongly preferred)

Experience translating simulations into manufacturable layouts using GDS-based tools (GDSFactory, IPKISS, KLayout, or similar)

Understanding of integrated photonics fundamentals (waveguide physics, interferometers, beam splitters and phase control mechanisms)

Ability to reason at

circuit level , beyond individual components

Professional English

Important (can grow here)

Experience closing the loop between simulation and experimental results

Familiarity with fabrication constraints and design‑for‑manufacturing logic

Python for automation, scripting or data analysis

Interest in scalable or quantum hardware architectures (quantum knowledge is a plus, not a prerequisite)

Bonus

Experience in industrial PIC platforms or foundry‑driven environment

Exposure to high‑speed photonic components or cryogenic constraints

Familiarity with inverse design and particle swarm optimization

We welcome strong PhD profiles as well as engineers with a few years of experience. What matters most is simulation autonomy, strong physical intuition, and the ability to turn models into robust devices while thinking at system scale.

Join one of the fastest‑growing quantum hardware companies in Europe and contribute directly to the evolution of scalable photonic quantum processors.

Work at the forefront of integrated photonics and quantum computing, shaping the building blocks of future fault‑tolerant architectures

Be part of a passionate, multidisciplinary team of designers, physicists and engineers

Contribute to real hardware that bridges research concepts and production‑ready quantum systems

Competitive compensation aligned with your experience and technical background

Company savings plan

100% health coverage (Alan)

Transport reimbursement or mobility bonus

Swile meal vouchers

Access to Gymlib

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