Integrated Laser Engineer - Junior/Mid, Palaiseau

Job Description Location: 42 Cours Pierre Vasseur, 91120 PALAISEAU, France

At NcodiN, we are redefining the future of AI computing. Our breakthrough optical interposer shatters the limits of system integration, enabling the next generation of AI processors to scale beyond the copper wall. With the world’s smallest laser integrated on silicon, we unleash the full potential of AI, setting a new industry standard for performance and efficiency.

Joining NcodiN today means becoming part of a bold, fast‑growing company backed by industry leaders. We offer a dynamic environment where autonomy, creativity and innovation thrive. Here, respect, meritocracy, and team spirit drive success, ensuring that every individual grows while we push technology forward together.

As we scale rapidly, we are looking for visionary, adaptable minds ready to pioneer new solutions and shape the future of AI. If you thrive in a fast‑paced, high‑impact environment, join us and be part of the revolution.

Start date: June 2026

Contract: Full-time (CDI)

We are seeking a driven and talented engineer with expertise in semiconductor. The role includes developing, optimizing, and deploying our

integrated nanolaser R&D

program. This role requires hands‑on device development, technical depth, and close collaboration across internal teams.

Working under the

R&D Laser Manager , you will own the technical execution of laser design projects— from high‑level modeling and design rule definition to wafer‑level validation and performance analysis — driving model‑to‑fab‑to‑test convergence through rigorous DOE campaigns and systematic data analysis.

This role establishes the laser design rules and learning loops that underpin NcodiN’s integrated technology, accelerating our path from concept to industrialization.

Key Responsibilities

Design&Modeling

Contribute to integrated laser architecture design (III‑V on silicon, nanolasers, photonic cavities, etc.) under guidance

Run and maintain multi‑physics simulations using existing setups:

Optical (FDTD, mode solvers)

Electrical (carrier transport)

Thermal

Produce structured design analyses from simulations (performance prediction, sensitivity checks, trade‑offs) with review

Help build/maintain compact models (rate equations, TLM, serial resistance)

Support PDK enrichment (documentation, checks, parameter updates)

Experimental validation&characterization

Support characterization plan execution (DC and RF) and lab readiness

Perform measurements:

I‑V, P‑I curves

Efficiency (slope efficiency, WPE)

Basic modulation dynamics/bandwidth measurements

Clean, analyze, and report measurement data; highlight anomalies

Participate in test setup operation and incremental improvements

Analysis&optimization

Identify first‑order performance limitations with support (thermal effects, recombination, optical losses, etc.)

Propose and test incremental design/process improvements

Contribute to failure‑analysis data collection and reliability experiments

Collaboration&documentation

Work with cross‑functional teams (design, modeling, process, test) on scoped tasks

Document methods, simulation settings, measurement conditions, and results in a reproducible way

Required Skills

Education&Experience

MSc or PhD (or near completion) in photonics, optoelectronics, semiconductor physics, or related field

0–3 years of relevant experience (industry or academic)

Technical Foundations

Good understanding of semiconductor laser basics

Familiarity with integrated photonics concepts (waveguides, photonic crystals)

Understands key performance metrics (I‑V, P‑I, SE, WPE)

Modeling&Simulation

Uses simulation tools with guidance; can run predefined simulations (FDTD, eigenmode solvers, etc.)

Basic interpretation of simulation outputs and limitations

Use rate equations / compact models to derive optimal design parameters

Experimental Skills

Comfortable supporting measurements and data collection

Familiar with lab instrumentation and measurement procedures

Basic data analysis and troubleshooting (with support)

Tools&Environment

Scientific programming for analysis (Python, Matlab, or equivalent)

Familiarity with simulation tools (e.g., Lumerical, COMSOL, or similar)

Structured work habits (clear notes, version control awareness is a plus)

Benefits

Comprehensive Health Care Plan

Life Insurance

Meal vouchers

Commuter Benefit (50% refund of public transportation pass)

Generous Time Off (Vacation, Sick&Public Holidays)

Flexible, hybrid workplace model

Stock Option Plan

Paris Pay Range€48,000 – 60,000 EUR

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