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# Senior Scientific Software Engineer - Simulation and Machine Learning

- **Company:** Constructor Knowledge Labs
- **Location:** Bremen, Germany (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Software Quality, Computer Simulation, Experimental Data, Python (Programming Language), Machine Learning, Scientific Computating
- **Published:** September 26, 2026
- **Apply:** https://www.adzuna.de/details/5895353330

## About the Role

* PhD or equivalent in physics, applied mathematics or computational science.
 * Strong scientific computing in Julia, Python, JAX or comparable.
 * Real numerical depth: ODE solvers, optimisation, stochastic processes, automatic differentiation.
 * Published work, or code that others rely on.

Skills & Competencies

 * Able to take a method from a paper and make it fast, tested and usable.
 * Comfortable owning code quality, not only correctness.
 * Interest in supervising students alongside the engineering.
 * Clear technical writing.

Education & Languages

 * PhD in physics, applied mathematics or computational science.
 * Fluent English.

## Description

Pillar 1 Simulation Engine

 * Build and maintain high-performance simulation code for open and closed quantum systems.
 * Own the differentiable simulation and automatic differentiation layer.
 * Drive performance. This code runs inside optimisation loops and speed decides what is possible.
 * Maintain and extend the Julia core and its Python interface.

Success Metrics and KPIs: simulation accuracy against measurement, runtime performance, API stability.

Pillar 2 Model Learning and Optimisation

 * Implement parameter inference and model learning from experimental data.
 * Work on neural-network approaches to PDE solving and equation discovery.
 * Benchmark against established academic tools and publish the comparison.

Success Metrics and KPIs: benchmark results, methods adopted by the research group, publications.

Pillar 3 Research Collaboration

 * Work with Constructor University faculty on joint research and grant applications.
 * Supervise graduate students and interns working on the engine.
 * Contribute to course material on numerical simulation and machine learning for physics.


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