Researcher for the Fusion Group (R2)

Reference: 417_26_CASE_F_R2 Job title: Researcher for the Fusion Group (R2)

About BSC

The Barcelona Supercomputing Center - Centro Nacional de Supercomputación (BSC-CNS) is the leading supercomputing center in Spain. It houses MareNostrum, one of the most powerful supercomputers in Europe, was a founding and hosting member of the former European HPC infrastructure PRACE (Partnership for Advanced Computing in Europe), and is now hosting entity for EuroHPC JU, the Joint Undertaking that leads large-scale investments and HPC provision in Europe. The mission of BSC is to research, develop and manage information technologies in order to facilitate scientific progress. BSC combines HPC service provision and R&D into both computer and computational science (life, earth and engineering sciences) under one roof, and currently has over 1000 staff from 60 countries.

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We are particularly interested for this role in the strengths and lived experiences of women and underrepresented groups to help us avoid perpetuating biases and oversights in science and IT research. In instances of equal merit, the incorporation of the under-represented sex will be favoured.

We promote Equity, Diversity and Inclusion, fostering an an environment where each and every one of us is appreciated for who we are, regardless of our differences.

If you consider that you do not meet all the requirements, we encourage you to continue applying for the job offer. We value diversity of experiences and skills, and you could bring unique perspectives to our team.

Context And Mission

The Fusion group (fusion.bsc.es) at the Computer Applications in Science and Engineering (CASE) department is looking for a Researcher (R2) in Software Engineering, Computers Sciences or related fields to join the EUROfusion Advanced Computing Hub at BSC. The successful candidate will participate in cutting-edge European R&D activities in plasma physics science and fusion technology and become members of this reference performance group in an international working environment.

The overall objective of the CASE Fusion group is to enhance modelling capabilities in fusion by code development, validation, integration and optimization including the use of advanced HPC techniques. We work closely towards the objectives of EUROfusion (www.euro-fusion.org), the European fusion research programme for Horizon Europe, in collaboration with Fusion for Energy (F4E), ITER, International Tokamak Physics Activity, and the Spanish national fusion laboratory CIEMAT.

Key Duties

• R&D activities in the assigned domain in the EUROfusion Advanced Computing Hub at BSC

• Optimizing and porting scientific codes in the field of fusion to new computer architectures.

Requirements

• Education

  • PhD in computational physics, computer science, engineering or related fields

• Essential Knowledge and Professional Experience

  • Demonstrated research experience
  • Strong skills in Linux environment
  • Strong knowledge on numerical methods, code development and scientific computing
  • Experience in scientific writing and communicating results

• Additional Knowledge and Professional Experience

  • At least 2 years of professional experience in a similar role
  • Programming skills: experience in programming and debugging (C, C++, Fortran, MPI, OpenMP, OpenACC and CUDA)
  • HPC: Experience building and debugging large-scale engineering/scientific software in large clusters and heterogeneous architectures
  • Experience in the use of mathematical libraries desirable
  • Experience in numerical solvers desirable
  • Experience in GPU enabling desirable
  • Experience in performance analysis of large supercomputing codes desirable
  • Experience in liaising with different stakeholders in code development teams desirable
  • Experience in development, delivery, continuous integration, refactoring and user support desirable
  • Experience in Agile methodologies desirable
  • Experience in training code users desirable
  • Experience in working within interdisciplinary teams desirable
  • Experience in ML and AI desirable
  • Fluent in English, both written and spoken

• Competences

  • Flexible team player capable of working with others as well as independently
  • Problem-solving, pro-active, result-oriented and positive work attitude
  • Able to think analytically
  • Good interpersonal skills, including in multi-cultural environments
  • Able to write reports, communicate results and train code users

Conditions

• The position will be located at BSC within the CASE Department

• We offer a full-time contract (35h/week), a good working environment, a highly stimulating environment with state-of-the-art infrastructure, flexible working hours, extensive training plan, restaurant tickets, private health insurance, support to the relocation procedures

• Duration: Open-ended contract due to technical and scientific activities linked to the project and budget duration

• Holidays: 22 days of holidays + 6 personal days + 24th and 31st of December per our collective agreement

• Salary: we offer a competitive salary commensurate with the qualifications and experience of the candidate and according to the cost of living in Barcelona

• Starting date: 01/10/2026

Applications procedure and process

All applications must be submitted via the BSC website and contain:

• A full CV in English including contact details

• A cover/motivation letter with a statement of interest in English, clearly specifying for which specific area and topics the applicant wishes to be considered. Additionally, two references for further contacts must be included. Applications without this document will not be considered.

Development of the recruitment process

The selection will be carried out through a competitive examination system ("Concurso-Oposición"). The recruitment process consists of two phases:

• Curriculum Analysis: Evaluation of previous experience and/or scientific history, degree, training, and other professional information relevant to the position. - 40 points
• Interview phase: The highest-rated candidates at the curriculum level will be invited to the interview phase, conducted by the corresponding department and Human Resources. In this phase, technical competencies, knowledge, skills, and professional experience related to the position, as well as the required personal competencies, will be evaluated. - 60 points. A minimum of 30 points out of 60 must be obtained to be eligible for the position.

The recruitment panel will be composed of at least three people, ensuring at least 25% representation of women.

In accordance with OTM-R principles, a gender-balanced recruitment panel is formed for each vacancy at the beginning of the process. After reviewing the content of the applications, the panel will begin the interviews, with at least one technical and one administrative interview. At a minimum, a personality questionnaire as well as a technical exercise will be conducted during the process.

The panel will make a final decision, and all individuals who participated in the interview phase will receive feedback with details on the acceptance or rejection of their profile.

At BSC, we seek continuous improvement in our recruitment processes. For any suggestions or comments/complaints about our recruitment processes, please contact recruitment [at] bsc [dot] es. For more information, please follow this link.

Deadline

The vacancy will remain open until a suitable candidate has been hired. Applications will be regularly reviewed and potential candidates will be contacted.

OTM-R principles for selection processes

BSC-CNS is committed to the principles of the Code of Conduct for the Recruitment of Researchers of the European Commission and the Open, Transparent and Merit-based Recruitment principles (OTM-R). This is applied for any potential candidate in all our processes, for example by creating gender-balanced recruitment panels and recognizing career breaks etc. BSC-CNS is an equal opportunity employer committed to diversity and inclusion. We are pleased to consider all qualified applicants for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or any other basis protected by applicable state or local law. For more information follow this link