Job Reference 465_26_CASE_PTG_R2 Position Researcher
- Software development for Supercritical Fluids and Non-equilibrium thermochemistry (R2) Closing Date Saturday, 31 October, 2026 Reference: 465_26_CASE_PTG_R2 Job title: Researcher
- Software development for Supercritical Fluids and Non-equilibrium thermochemistry (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. Look At The BSC Experience BSC-CNS YouTube Channel Let's stay connected with BSC Folks 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 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 High-fidelity numerical simulation of turbulent, high-speed, and reacting flows has become a cornerstone of innovation in aerospace, clean mobility, energy, and safety-critical systems, yet remains one of the most computationally demanding challenges in computational science. Applications such as hypersonic flight, spacecraft re-entry, advanced turbomachinery, cryogenic propulsion, and hydrogen safety operate in extreme regimes characterised by high Reynolds and Mach numbers, strong thermochemical non-equilibrium, shocks, multiphase interactions, and tightly coupled physical processes. However, the extreme scale separation inherent to turbulent flows implies that simulations at realistic Reynolds numbers require resolving billions to hundreds of billions of degrees of freedom, making access to leadership-class and exascale computing resources a strict prerequisite even for idealised configurations. In this context, there is need for production-grade simulation capability that supports both direct numerical simulations and large-eddy simulation within a unified, MPI/GPU software framework. In addition to delivering predictive simulations, generating high-quality, physics-consistent datasets for the training, validation, and continued development of machine-learning models, enabling data-driven turbulence closures, reduced-order models, and hybrid ML–physics approaches is a key aspect of the approach. The Primary Objective Of The Position Is To Develop And Integrate GPU-accelerated Thermochemical And Thermophysical Modelling Capabilities For High Enthalpy, Non-equilibrium, And Extreme Condition Flows, Optimised For Exascale Simulations. The Work Will Involve
• Developing GPU-optimised thermochemical kernels for high-throughput evaluation of multi-temperature thermodynamic properties, including partition functions, specific heats, and enthalpies.
• Developing robust multi-temperature and finite-rate chemistry models for high enthalpy flows, including dissociation, and vibrational relaxation.
• Designing scalable batched evaluation strategies capable of processing millions of thermochemical and thermophysical queries per timestep, while promoting efficient memory management.
• Developing robust numerical methods for temperature inversion, stiff chemical kinetics, including adaptive Newton solvers, bracketing strategies, ill-posed state detection, and recovery mechanisms.




• Integrating and accelerating thermophysical property models for cryogenic, near-critical, and supercritical fluids with a focus on GPU acceleration and mixed-precision computing.
• Ensuring scalability, portability, numerical robustness, and performance across leadership-class and exascale HPC architectures through MPI/GPU parallelization and optimized computational kernels This position offers the opportunity to contribute to cutting-edge developments at the intersection of aerospace engineering, computational physics, and high-performance computing, with direct relevance to future propulsion technologies. The research team that the applicant will be involved is the Propulsion Technologies Group at CASE Department of BSC. The team is a multidisciplinary group with researchers from all disciplines and with strong background in Computational Fluid Dynamics (CFD). The team is involved in many EU and industrial projects related to this topic, where the successful activities and the publications on highly ranked scientific journals give the proved expertise. Key Duties
• Collaborate with the different partners of the projects to carry our collaborative research.
• Contribute to scientific publications and reporting to different National and EU projects the researcher will be involved in.
• The main duties include the development of advanced thermochemistry models for aerospace propulsion involving chemical kinetics and critical conditions using GPU-accelerated solutions for supercomputers. Requirements
• Education
• The candidate should hold a PhD Degree in Chemistry, Physics, Mechanical Engineering, or Aerospace with background in fluid mechanics and thermal systems.
• A solid background in data-driven methods and Artificial Intelligence will be positively evaluated. Basic knowledge of HPC will be appreciated.
• Essential Knowledge and Professional Experience
• Knowledge of fluid mechanics and thermodynamics are expected.
• Additional Knowledge and Professional Experience
• General knowledge on computer science and programming languages such as Fortran, Python, C, and C++ will be considered an asset.
• Fluency in English is essential, Spanish will be highly valuable.
• Competences
• Strong analytical skills.
• Ability to work independently and within a team.
• Good communication and team-work skills to work in a multidisciplinary team. 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, versátil

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: 01/11/2026 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 [email protected]. 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 Application Form You are applying for the following job offer Name and Surname
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📌 Researcher - Software development for Supercritical Fluids and Non-equilibrium thermochemistry (Barcelona)
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