Lead Optical Systems Engineer

eXalt; Paris; Sur place; EUR 90 000 - 130 000; Plein temps

Résumé du poste

eXalt, a fast-growing technology company in the optics space, is seeking a Lead Optical Systems Engineer to take ownership of the optical discipline across its products. You will drive architecture, modelling and integration from concept to hardware validation on dedicated test benches.

You will lead a small team, mentor engineers, and collaborate with suppliers and laboratories to ensure robust optical performance, meeting demanding space and defence-grade requirements.

Qualifications

• Master’s, Engineering degree or PhD in optics, photonics, physics or related discipline.
• Experience designing, analysing, integrating and validating complex optical systems.
• Delivered optical systems end-to-end from design to hardware testing.

Responsabilités

• Own optical discipline across products and lead system-level analyses.
• Design optical trains with complete prescriptions for manufacturing or procurement.
• Build optical models to assess image quality, transmission and tolerance sensitivity.
• Develop and maintain analytical models to validate numerical simulations.
• Define and defend optical error budgets during design reviews.
• Lead design-to-hardware transition with component selection and test campaigns.
• Specify and procure optical ground support equipment and metrology tools.
• Compare predicted vs. measured performance and feed insights back into models.
• Lead supplier interactions: RFQs, design reviews, acceptance criteria.

Connaissances

System architecture

Optical design

Modelling & simulation

First-principles modelling

Optical error budgets

Integration & test

Optical metrology

Model-to-test correlation

Supplier management

Technical leadership

Formation

Master’s degree / PhD in Optics or Photonics

Background in Physics or Optical Engineering

Outils

FRED

Zemax OpticStudio

Code V

Description du poste

Our client is an innovative and fast-growing technology company developing advanced optical communication and photonics-based systems for demanding applications.

As part of its growth and the strengthening of its optical engineering capabilities, we are looking for a Lead Optical Systems Engineer.

Reporting to the R&D and Engineering teams, you will take ownership of the optical discipline across the company’s products. You will work across the full development lifecycle of optical systems: from architecture and modelling through to integration, alignment, characterisation and validation on dedicated test benches.

You will join an already structured technical environment, with optical designs, analyses, error budgets and operating test benches under configuration control. Working closely with a Senior Optical Architect, who will act as a technical authority and mentor, you will take operational and technical ownership of the discipline, while ensuring that optical knowledge, methods and best practices are documented and sustained across the organisation.

• System Architecture & Trade-offs: Participate in system-level analyses and architecture trade-offs, including link and radiometric budgets, requirements flow-down to optical subsystems, and arbitration between optical, mechanical, thermal, electrical, mass and cost constraints.

• Optical Design: Design optical trains and produce complete optical prescriptions suitable for manufacturing or procurement, including materials, coatings, tolerances, expected performance and acceptance criteria.

• Modelling & Simulation: Build and run optical models using ray-tracing software to assess image and beam quality, transmission, efficiency, stray light, polarisation and tolerance sensitivity.

• First-Principles Modelling: Develop and maintain analytical models to validate numerical simulations, covering beam propagation, diffraction, optical coupling, radiometry and optical-link performance.

• Optical Error Budgets: Define, maintain and defend optical error budgets during design reviews, ensuring consistency between predicted performance, available margins and measured results.

• Integration & Test: Lead the transition from design to hardware, including component and supplier selection, definition of assembly and alignment procedures, and follow-up of Assembly, Integration & Test (AIT) and characterisation campaigns.

• Optical Ground Support Equipment: Define, specify and procure the optical ground support equipment, test benches and metrology tools required to demonstrate product compliance, as well as the associated test strategy.

• Model-to-Test Correlation: Compare predicted and measured performance, analyse discrepancies, identify root causes and feed findings back into optical models and error budgets.

• Supplier Management: Lead technical interactions with optics manufacturers, coating suppliers, integration partners and laboratories, including specifications, RFQs, design reviews, acceptance criteria and incoming inspection.

• Technical Leadership: Help develop the company’s optical capability by mentoring engineers and interns, formalising methods and ensuring the technical documentation and optical baseline remain robust, traceable and transferable.

Education: Master’s degree, Engineering degree or PhD in Optics, Photonics, Physics, Optical Engineering or a related discipline.Professional Background: Significant experience in the design, analysis, integration and validation of complex optical systems. You have ideally delivered an optical system end to end—from design and modelling through to manufactured hardware, alignment and testing.Technical Expertise:Strong command of at least one professional optical design and analysis software package:FRED,Zemax OpticStudio,Code V or equivalent.Solid grounding in geometrical and physical optics, including beam propagation, diffraction, coupling, radiometry and polarisation.Experience in non-sequential modelling, stray-light analysis, Monte Carlo tolerancing and the definition of realistic compensators.Experience in optical prescription writing, thin-film and coating specification, as well as manufacturing tolerances.Programming and scripted-analysis skills, particularly inPython; familiarity with Mathematica is a plus.Good command of optical metrology techniques, including interferometry, wavefront sensing, autocollimation, beam profiling, power measurement and spectral measurement.System Engineering Mindset: You are comfortable building and owning error budgets, justifying requirements and making technical trade-offs at the interface of optics, mechanics, thermal engineering, electronics and industrial constraints.Relevant Industry Experience: Experience in space systems, precision instrumentation, photonics, optical communications, defence electro-optics or similarly demanding environments would be highly valued.Mindset: You are motivated by technical ownership and able to lead a discipline, challenge technical decisions constructively and make sound engineering judgements. You are equally comfortable developing models and working hands-on in the lab, translating measurement results into engineering decisions.English: Professional working proficiency in English, with the ability to write technical documentation and communicate effectively with international suppliers and partners.