Numerical Solvers Engineer — GPU/CPU HPC

Invisix; Eindhoven; On-site; EUR 70,000 - 100,000; Full time

Benefits offered by this job

Employee Share Ownership Plan

Job summary

Invisix is seeking a Scientific Computing Engineer to own and develop substantial parts of our in-house numerical solver, from formulation to production-quality code on GPU and CPU. You will shape solver design, work with algorithm and software teams, and own your components end to end.

We expect a PhD or equivalent, strong background in numerical methods, and fluency in English. The role offers ownership from day one, competitive salary, and room to grow as the team scales.

Qualifications

• PhD in physics, applied math or computational science, or equivalent industry experience.
• 3–5 years of numerical software development in research or industry.
• Strong background in numerical methods and linear algebra.

Responsibilities

• Design and implement the solver's numerical methods, and improve their accuracy and speed
• Build and maintain the testing, validation and benchmarking that keep the solver's results accurate and reliable
• Optimize performance on GPU and CPU hardware, together with the technical lead
• Work with the algorithm team so that the solver meets the needs of our measurement system, and with the software team, who integrate and deploy it in the product
• Contribute to technical decisions, code reviews and documentation, and challenge existing designs when you see a better approach
• Take on adjacent responsibilities as the team grows, such as contributing to the longer-term solver roadmap

Skills

Numerical methods

Numerical linear algebra

Low-level programming

English fluency

AI tooling usage

Education

PhD in physics / applied mathematics / computational science

Tools

C/C++/Rust/Fortran

Job description

Invisix is seeking a Scientific Computing Engineer to own and develop substantial parts of our in-house numerical solver, from formulation to production-quality code on GPU and CPU. You will shape solver design, work with algorithm and software teams, and own your components end to end.

We expect a PhD or equivalent, strong background in numerical methods, and fluency in English. The role offers ownership from day one, competitive salary, and room to grow as the team scales.