Quantum Dot Process & Characterisation Engineer- Post-Growth Processing (Master)

Entangled Future; Palaiseau; Híbrido; EUR 55.000 - 75.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Competitive salary

Profit-sharing

100% health coverage (Alan)

Transport reimbursement or sustainable

Meal vouchers (Swile)

Gymlib fitness support

Childcare assistance & referral bonus

Descripción de la vacante

Quandela in Palaiseau, Île-de-France, France, seeks a Quantum Dot Process & Characterisation Engineer to drive sample prep and optical validation in early fabrication steps. You’ll handle cleanroom processing, from chemical treatments to PECVD and high-temperature annealing, and perform photoluminescence and imaging measurements at cryogenic temperatures.

With a Master’s degree, you’ll analyze data in Python, document results, and help optimize recipes.

Formación

• Master’s degree in a relevant field (Materials Science, Semiconductor Physics, Optics, Micro/Nanofabrication).
• Solid foundations in semiconductor physics, III-V materials.
• Solid foundations in optics and semiconductor fabrication processes.
• Fluency in Python for data analysis.
• Excellent attention to detail and a rigorous approach to experimental work.
• Strong troubleshooting and problem-solving skills.
• Ability to investigate technical problems using experimental data and literature.
• Clear documentation and communication skills.
• Fluent English in writing and speaking.

Responsabilidades

• Run established procedures for preparing GaAs/AlGaAs samples with InAs quantum dots.
• Carry out cleanroom fabrication steps: chemical treatments, PECVD, and high-temperature annealing.
• Follow procedures precisely and flag deviations or anomalies.
• Measure optical properties before/after processing (photoluminescence, imaging) including at cryogenic temperatures.
• Analyze data with Python and report results to Production and R&D teams.

Conocimientos

Python

Attention to detail

Troubleshooting

Documentation

Communication

English proficiency

Educación

Master’s degree in Materials Science or related field

Descripción del empleo

Quantum Dot Process & Characterisation Engineer- Post-Growth Processing (Master) at Quandela, Palaiseau, Île-de-France, France. A mid-level full time position in the Research team, listed under hardware engineering.

Role overview

We are looking for a Process & Characterisation Engineer to prepare and validate GaAs/AlGaAs samples containing InAs quantum dots (QDs) through the first steps of our single-photon source fabrication flow. The role combines hands-on cleanroom processing - chemical treatment, PECVD deposition and high-temperature annealing - with optical characterisation of the QDs before and after each step. The data you produce decides whether a sample is ready to move forward, and how the process recipes should be adjusted. You will start by running an established, well-documented procedure with rigour and consistency. As you build expertise, the role is designed to grow: within your first year, you will contribute to optimising the process, automating the measurement setups and taking ownership of sample validation for these steps, working closely with both the Production and R&D teams.

Sample preparation & processing (from day one)

• Run the established step-by-step procedure for preparing GaAs/AlGaAs samples with InAs quantum dots.
• Carry out the cleanroom fabrication steps: chemical surface treatment, PECVD deposition and high-temperature annealing.
• Follow recipes and operating procedures precisely, and flag any deviation, drift or anomaly as soon as it appears.
• Contribute to a safe, disciplined and efficient cleanroom environment.

Optical characterisation & validation

• Measure QD optical properties before and after processing, using photoluminescence and white-field imaging, including at cryogenic temperature.
• Compare pre- and post-processing results against acceptance criteria to decide whether each sample can be released to the next fabrication steps.
• Adjust process recipes based on measurement results, within defined process windows.

Data, reporting & traceability

• Analyse measurement data using Python and report results clearly and regularly to the Production and R&D teams.

Requirements

• Master’s degree (Bac+5) in Materials Science, Semiconductor Physics, Optics, Micro/Nanofabrication or a related field.
• Solid foundations in semiconductor physics, particularly III-V materials.
• Solid foundations in optics and in semiconductor fabrication processes.
• Fluency in Python for data analysis.
• Excellent attention to detail and a rigorous approach to experimental work.
• Strong troubleshooting and problem-solving skills.
• Ability to investigate technical problems using experimental data and scientific literature.
• Clear documentation and communication skills.
• Fluent English, both written and spoken.

Nice to Have

• Hands‑on cleanroom experience, ideally in III-V device fabrication: wet and dry etching, PECVD deposition, thermal processing.
• Hands‑on experience with optical characterisation, including building and aligning optical setups (photoluminescence, white-field imaging).
• Experience with cryogenic measurements (e.g. 40 K Stirling cryostat).
• Experience automating instruments or measurement setups with Python.

Benefits

• Competitive salary, flexible based on your experience
• Profit-sharing & company savings plan
• 100% health coverage (Alan)
• 50% transport reimbursement or sustainable mobility bonus
• Meal vouchers (Swile), Gymlib fitness support
• Childcare assistance & referral bonuses (€1,000-€2,000)
• A meaningful role with real ownership, from day one
• A team eager to collaborate and grow with you
• Daily exposure to the entire quantum stack - from high-level APIs to low-level firmware, and everything in between.