Senior Scientific Software Developer - Scientific Data Analysis Applications

ESSE - European Spallation Source ERIC; Lunds kommun; On-site; SEK 1,182,736 - 1,626,262; Full time

Benefits offered by this job

Relocation support

Professional development opportunities

Job summary

European Spallation Source ERIC (ESS) invites applications for a Senior Scientific Software Developer focusing on interactive data analysis applications for neutron scattering. You will build Python-based tools and Jupyter workflows, contribute to open-source projects, and collaborate with DMSC developers, instrument scientists, and users.

This full-time position is based in Kongens Lyngby, Denmark, with an international team, strong development culture, and opportunities for professional growth.

Qualifications

• Strong Python development experience and a portfolio of software used by real users.
• Experience with scientific computing, data analysis, or technically complex applications.
• Familiarity with modern development practices such as testing, CI/CD, and version control.
• Experience delivering and maintaining production‑quality scientific software, making pragmatic technical decisions, and providing mentoring and technical leadership.
• Experience in neutron scattering, x‑ray science, reflectometry, or spectroscopy is valuable but not required.
• Familiarity with PyQt, PySide, QML, or Jupyter is beneficial.

Responsibilities

• Interactive scientific applications and user interfaces
• Jupyter‑based analysis pipelines
• Scientific visualisation and data exploration tools
• API and application design
• Improving usability, reliability, and maintainability
• Debugging scientific applications
• Contributing to shared frameworks and open‑source software
• Modernising existing systems, improving testing and automation practices, and shaping technical decisions across the software stack

Skills

Python development

Scientific computing

Data analysis pipelines

Tools

PyQt

PySide

QML

Jupyter

Job description

Senior Scientific Software Developer – Scientific Data Analysis Applications

The European Spallation Source (ESS) is one of Europe’s largest research infrastructure projects and is building the world’s most powerful neutron source. Through cutting‑edge science and technology, ESS enables discoveries that advance our understanding of materials, energy, health, and the environment.

About the team

We build the analysis applications and libraries scientists use to explore and interpret neutron scattering data. Our work combines scientific methods, instrument expertise, and software engineering to create reliable and user‑friendly tools. We collaborate closely with DMSC developers, ESS instrument scientists, and users from the neutron community. Most of our software is written in Python using the DMSC‑developed EasyScience framework (https://github.com/easyScience) and includes contributions to open‑source projects such as SasView (https://www.sasview.org).

About the role

This hands‑on scientific software engineering role focuses on interactive data analysis applications and scientific platforms for neutron scattering experiments. You will work with ESS scientists and users to define requirements and build tools that support research from data exploration to scientific interpretation. Your work will also involve collaborating with the DMSC data‑reduction team and improving the usability, functionality, and quality of scientific software at ESS.

Responsibilities

• Interactive scientific applications and user interfaces
• Jupyter‑based analysis pipelines
• Scientific visualisation and data exploration tools
• API and application design
• Improving usability, reliability, and maintainability
• Debugging scientific applications
• Contributing to shared frameworks and open‑source software
• Modernising existing systems, improving testing and automation practices, and shaping technical decisions across the software stack

Qualifications

• Strong Python development experience and a portfolio of software used by real users
• Comfortable working with scientific computing, data analysis, or technically complex applications
• Familiarity with modern development practices such as testing, CI/CD, and version control
• Experience delivering and maintaining production‑quality scientific software, making pragmatic technical decisions, and providing mentoring and technical leadership
• Experience in neutron scattering, x‑ray science, reflectometry, or spectroscopy is valuable but not required
• Familiarity with PyQt, PySide, QML, or Jupyter is beneficial

What we offer

DMSC is located on the DTU campus in Kongens Lyngby, north of Copenhagen, while the ESS neutron facility is based in Lund, Sweden. Together, they form a unique cross‑border scientific environment in the Øresund region. You will join a dynamic and highly collaborative international workplace with colleagues representing nearly 60 nationalities. We offer opportunities for professional development and close interaction between computational science, instrumentation, and large‑scale experiments.

Benefits include 25 + 5 annual leave days in addition to public and company holidays, an attractive pension scheme, preventative healthcare benefits, and relocation support for international hires where applicable.

This is a full‑time, permanent position based in Kongens Lyngby, Denmark. It is open to candidates who can start as soon as practicable.