Research Engineer - Optimization of I/O performance and data compression (RE1)

Job Reference



Research Engineer - Optimization of I/O performance and data compression (RE1)

Closing Date

Thursday, 30 June, 2022
Reference: 160_22_ES_CES_RE1
Job title: Research Engineer - Optimization of I/O performance and data compression (RE1)

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, and is a hosting member of the PRACE European distributed supercomputing infrastructure. 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 770 staff from 55 countries.

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Context And Mission

Within the Barcelona Supercomputing Center the Earth Sciences Department, led by Prof Francisco Doblas-Reyes, aims to deliver novel, advanced, and well-evaluated high-resolution global climate models capable of simulating and predicting climate estimations with unprecedented reliability. The successful candidate will be part of the Performance Team, a sub-group in the section of Computational Earth Sciences.

This team, composed of 10 members but steadily growing, performs R&D tasks in the field of Earth System Modelling (ESM) performance: its goal is to identify model bottlenecks and research how to remove them. The team has at its disposal cutting-edge performance tools, able to evaluate and represent different performance metrics. Having identified those areas in the code, the experts in the team proceed to modify them without impacting the final results. Possible solutions can go from using more efficient numerical algorithms to modifying the way the model exploits the HPC infrastructure.

Key Duties

  • The successful candidate will work on analyzing and tuning the I/O server computational performance of different Earth Science applications running at a very high-resolution configuration, as well as exploring and applying lossy compression techniques to the output data. The candidate will also be involved in the development of the department's "common" applications: these include several applications whose interest is shared among different sub-group in the Earth Sciences department and whose number of users can range from small groups to several institutions.
    This position involves close interaction with the Climate Prediction group and external collaborators/software vendors.


  • Education
    • Having a Bachelor in Computer Science, Engineering, Mathematics, Physics or related discipline
    • Having a Master’s degree will be valued
  • Essential Knowledge and Professional Experience
    • Excellent computing skills in high-level computer languages (especially FORTRAN or C/C++) and experience with UNIX/LINUX environments and scripting languages (bash, Python,etc)
    • Programming skills to manage big and collaborative projects and experience with git
    • Knowledge of Input/Output approaches and tools as IO servers
    • Experience or knowledge in running and optimizing scientific codes on large HPC systems.
    • Experience or knowledge in HPC architecture and parallel programming (MPI and/or OpenMP) will be valued
    • Experience or knowledge in Data compression will be valued.
    • Experience or knowledge in the usage and support of Unix- or Linux-based HPC systems
  • Competences
    • Earth system models are sophisticated applications and High Performance problem-solving skills and a proactive attitude to address new challenges and perfect the current solutions so they gain in reliability and efficiency.
    • Computers are complex systems. The candidate needs to have excellent
    • This is a specialized position so the successful candidate is expected to have a demonstrated learning capacity and the motivation to maintain a learning progression during the contract.
    • The BSC Earth Sciences department is an international and interdisciplinary environment, so the candidate must be fluent in English and have good written and verbal skills and the capacity to support Earth and Computational scientists
    • Climate models are collaborative projects, so it is mandatory to be able to fulfill schedules and coordinate with members from other institutions, as well as to disseminate the advances in international workshops.


  • The position will be located at BSC within the Earth Sciences Department
  • We offer a full-time contract, a good working environment, a highly stimulating environment with state-of-the-art infrastructure, flexible working hours, extensive training plan, tickets restaurant, private health insurance, fully support to the relocation procedures
  • Duration: Temporary - 2 years renewable
  • 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: June

Applications procedure and process

All applications must be made through BSC website and contain:

  • A full CV in English including contact details
  • A Cover Letter with a statement of interest in English, including two contacts for further references - Applications without this document will not be considered

    In accordance with the OTM-R principles, a gender-balanced recruitment panel is formed for every vacancy at the beginning of the process. After reviewing the content of the applications, the panel will start the interviews, with at least one technical and one administrative interview. A profile questionnaire as well as a technical exercise may be required during the process.

    The panel will make a final decision and all candidates who had contacts with them will receive a feedback with details on the acceptance or rejection of their profile.

    At BSC we are seeking continuous improvement in our recruitment processes, for any suggestions or feedback/complaints about our Recruitment Processes, please contact recruitment [at] bsc [dot] es.

    For more information follow this link

  • Deadline

    The vacancy will remain open until 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 planels 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
    This position is reserved for candidates who meet the requirements and have the legal status of disabled persons with a degree of disability equal to or greater than 33%. In case there are no applicants with disabilities that meet the requirements, the rest of the candidates without declared disability will be evaluated.

    Application Form

    please choose one of this and if needed describe the option : - BSC Website - Euraxess - HiPeac - LinkedIn - Networking/Referral: include who and how - Events (Forum, career fairs): include who and how - Through University: include the university name - Specialized website (Metjobs, BIB, other): include which one - Other social Networks: (Twitter, Facebook, Instagram, Youtube): include which one - Other (Glassdoor, ResearchGate, job search website and other cases): include which one
    Please, upload your CV document using the following name structure: Name_Surname_CV
    Files must be less than 3 MB.
    Allowed file types: txt rtf pdf doc docx.
    Please, upload your CV document using the following name structure: Name_Surname_CoverLetter
    Files must be less than 3 MB.
    Allowed file types: txt rtf pdf doc docx zip.
    Please, upload your CV document using the following name structure: Name_Surname_OtherDocument
    Files must be less than 10 MB.
    Allowed file types: txt rtf pdf doc docx rar tar zip.
    ** Consider that the information provided in relation to gender and nationality will be used solely for statistical purposes.