Geometry Modeling Engineer

Invisix; Eindhoven; Hybrid; EUR 70,000 - 110,000; Full time

Benefits offered by this job

Employee Share Ownership Plan

Learning & development budget

Flexible working arrangements

Job summary

Invisix is seeking a Geometry Modeling Engineer to define how our modeling tool describes 3D structures and evolves: from requirements to geometry engine changes. You’ll work across application, algorithm, and software teams, translating use cases into specifications and guiding implementations through reviews and acceptance.

You will shape how geometry models are handed to simulation software and assess the impact on measurement results.

Qualifications

• MSc or PhD (or comparable experience) in a relevant field with 3–5 years of experience.
• Experience with computational geometry and geometry engines or CAD kernels.
• Hands-on work building 3D parametric models used in simulations or device modeling.
• Experience preparing geometric models for physics solvers (FEM/TCAD).
• Python proficiency for prototyping and collaboration with software teams.
• Fluent English.
• Active use of AI tooling to enhance workflows.

Responsibilities

• Translate application use cases into modeling requirements and specify supported structures and features.
• Identify gaps in the modeling tool and propose extensions to the geometry engine.
• Add geometric freedom (rounded corners, freeform profiles) while keeping models valid for simulation.
• Evaluate whether extending the current tool or building a new one is more viable.
• Define how geometry models are handed over to simulation software and how choices affect results.
• Prototype new capabilities and guide implementation through specs, reviews, and acceptance.

Skills

Python

Fluent English

AI tooling

Computational geometry

3D parametric modeling

Education

MSc/PhD or comparable experience

Tools

Geometry engine tools

CAD kernel

Python prototyping tools

Job description

About Invisix

Semiconductor manufacturers can't build what they can't measure. Invisix Measuring Systems is a fast-growing scale-up in the high-tech industry, developing next-generation metrology solutions for the semiconductor sector. We work at the intersection of optics, software, and data.

We're a small team, but the depth of knowledge inside Invisix is anything but small. Our culture is professional and fast-paced, with short communication lines and a strong sense of shared purpose. Everyone here is committed, and everyone knows their work directly contributes to something bigger.

The Role

We're looking for a Geometry Modeling Engineer to define how our modeling tool describes 3D structures, and how it should develop: modeling requirements, computational geometry, parametrization and tool strategy amongst others.

You'll work between the application team, the algorithm team and the software engineers who build the tool. You translate use cases into requirements, decide how the tool and its geometry engine should be extended, and guide the implementation through specifications, reviews and acceptance. Defining use cases and building models for customers' applications sits with our application engineers, and implementing and maintaining the tool sits with our software engineers.

Key Responsibilities

• Translate the application team's use cases into modeling requirements: which structures, shape features and degrees of freedom the tool must support

• Identify what the modeling tool cannot represent today and specify how to extend it, including changes to the underlying geometry engine where needed

• Add geometric freedom where the current modeling approach is too rigid, for example rounded corners or freeform profiles, while keeping models valid for simulation and parameter estimation

• Assess whether extending the current tool remains the right path, or whether a new tool is the better investment, in terms of cost, effort and risk

• Define with the algorithm team how geometry models are handed over to our simulation software, and how modeling choices affect the measurement results

• Prototype new modeling capabilities and guide the software engineers who implement them, through specifications, reviews and acceptance

Is this you?

• MSc or PhD (or comparable experience) in physics, applied mathematics, electrical engineering, mechanical engineering, computer science or a related field, with 3-5 years of relevant experience

• Computational geometry experience: working with or on a geometry engine, CAD kernel or geometry library, including making it reliable on difficult cases

• Hands-on experience building 3D parametric models used in simulation, for example CAD modeling, process emulation or device modeling

• Experience preparing geometric models as input for physics solvers, for example FEM or TCAD

• Python skills for prototyping, and for working alongside the software team

• Fluent English

• Active use of AI tooling in your daily work (prototyping, testing, documentation) to boost efficiency

Nice to have

• Knowledge of semiconductor processes and process flows

• Experience building 3D parametric models from cross-section or microscopy images

• Experience designing parametrizations for numerical optimization

What We Offer

• A role at the heart of Invisix's modeling software, with real technical ownership from day one

• Competitive salary and benefits, including an Employee Share Ownership Plan

• A learning and development budget to support your growth

• Flexible working arrangements, and room to grow into adjacent responsibilities as the team scales

Diversity & Inclusion

We're committed to a diverse and inclusive workplace, where ideas and individuals flourish. We welcome applicants from all backgrounds and judge candidates on merit and potential contribution, regardless of race, ethnicity, gender, sexual orientation, age, religion, disability, or other identity characteristics. What we're looking for is talent with integrity, a collaborative mindset, and a drive to make an impact.

Your Data

Your application data is processed by Invisix and kept in our applicant tracking system so we can consider you for this role and future opportunities. See our privacy policy for details: invisix.com/privacybeleid/