Process Engineer - Semiconductor Processes

Entangled Future; Palaiseau; Hybrid; EUR 85,000 - 125,000; Full time

Benefits offered by this job

Competitive salary

Profit-sharing & company savings plan

100% health coverage (Alan)

50% transport reimbursement or eco-mob

Meal vouchers (Swile) and fitness 지원

Childcare assistance & referralBonuses

Job summary

Quandela, based in Palaiseau, Île-de-France, France, seeks a Process Engineer to develop and industrialize semiconductor fabrication processes. The role focuses on dry etching (ICP-RIE), PECVD and metal evaporation, collaborating with R&D and cleanroom operators to boost yield and throughput.

You will lead acceptance testing, recipe transfer, tool maintenance, and process monitoring to ensure robust, scalable manufacturing.

Qualifications

• In-depth knowledge of plasma etching and diagnostics (actinometry, ion flux, RGA).
• Experience with plasma-tool maintenance and process-drift correction.
• Experience with industrialization and R&D-to-production transfer (PFMEA, control plans, SPC, DoE).
• Experience with optoelectronic-device design and characterization.
• Knowledge of III–V semiconductors, particularly AlGaAs photonic structures, resonators or VCSELs.

Responsibilities

• Define and run acceptance tests with the maintenance engineer.
• Transfer and optimize recipes on new equipment.
• Establish maintenance, cleaning and conditioning procedures.
• Validate wafer-to-wafer and day-to-day reproducibility through extended runs.
• Prepare processes for larger wafers, batches and production volumes.
• Improve process robustness, uniformity and yield.
• Establish process monitoring and SPC as relevant.
• Investigate drifts, yield losses and equipment issues; implement corrective actions.
• Optimize fabrication parameters, especially dry etching, using structured experiments.
• Correlate process data with structural, optical and electrical characterization to understand device impact.
• Turn R&D building blocks into stable manufacturing processes; assess manufacturability and risks.
• Contribute to PFMEA and define appropriate controls.

Skills

Plasma etching physics

Diagnostics and metrology

Process-drift correction

PFMEA and control plans

DoE and SPC

R&D-to-production transfer

Optoelectronic-device design and char.

III–V semiconductors (AlGaAs)

Job description

Process Engineer - Semiconductor Processes at Quandela, Palaiseau, Île-de-France, France. A executive-level full time position in the Products team, listed under hardware engineering.

Role Overview

We are looking for a Process Engineer to develop and industrialize semiconductor fabrication processes, bridging Advanced R&D and Production. This hands-on role focuses on dry etching (ICP-RIE), PECVD and metal evaporation. Working closely with R&D and cleanroom operators, you will improve device performance, process reproducibility, yield and throughput.

1. Equipment Validation and Recipe Transfer

• Define and run acceptance tests with the maintenance engineer.
• Transfer and optimize recipes on new equipment.
• Establish maintenance, cleaning and conditioning procedures.
• Validate wafer-to-wafer and day-to-day reproducibility through extended runs.

2. Production Capacity and Yield

• Prepare processes for larger wafers, batches and production volumes.
• Improve process robustness, uniformity and yield.
• Establish process monitoring, KPIs and Statistical Process Control (SPC) where relevant.
• Investigate process drifts, yield losses and equipment issues; implement corrective and preventive actions.

3. Device Performance

• Optimize fabrication parameters, particularly dry etching, using structured experimentation and scientific literature.
• Correlate process data with structural, optical and electrical characterization to understand their impact on device performance.

4. R&D-to-Production Transfer

• Turn R&D building blocks into stable, documented manufacturing processes.
• Assess manufacturability, scalability and process risks.
• Contribute to Process Failure Mode and Effects Analysis (PFMEA) and define appropriate controls.

How You Will Grow

First 3 months: Learn Quandela’s fabrication and characterization flow and contribute to ongoing technical challenges. Within 6 months: Take ownership of a tool, validate new equipment and support the transition to larger wafers and batches. Within 1 year: Improve device performance, strengthen statistical process monitoring and support increasing production volumes.

Requirements

• In-depth knowledge of plasma etching physics and diagnostics, such as actinometry, ion-flux measurements or residual gas analysis.
• Experience with plasma-tool maintenance and process-drift correction.
• Experience with industrialization, R&D-to-production transfer, PFMEA, control plans, SPC or Design of Experiments (DoE).
• Experience with optoelectronic-device design and characterization.
• Knowledge of III‑V semiconductors, particularly AlGaAs photonic structures, resonators or VCSEL technologies.

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.