LLVM Software Engineer (RE1)

Barcelona Supercomputing Center; Barcelona; On-site; EUR 70,000 - 90,000; Full time

Benefits offered by this job

Restaurant tickets

Private health insurance

Relocation support

Job summary

The Barcelona Supercomputing Center invites applications for an LLVM Software Engineer (RE1) to advance RISC-V vector support in high-performance computing workloads. The role emphasizes improving vector code generation and collaborating with the LLVM/Clang community to push forward open-source compilers.

We offer a full‑time, 35h/week contract with a stimulating research environment, competitive salary in Barcelona, relocation support, and benefits including restaurant tickets and private

Qualifications

• Bachelor or Master degree in Computer Science.
• Strong C++ programming skills.
• Experience with compilers and LLVM/Clang codebases.

Responsibilities

• Improve code generation for the RISC-V Vector Extension.
• Collaborate with upstream LLVM/Clang on new features.

Skills

C++

Compiler development

LLVM & Clang

Education

Bachelor or Master in Computer Science

Job description

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 1,000 staff from 60 countries.

Job Reference: 459_26_CS_CTHPC_RE1

Position: LLVM Software Engineer (RE1)

Closing Date: Saturday, 24 October, 2026

Look At The BSC Experience

BSC-CNS YouTube Channel

We are particularly interested for this role in the strengths and lived experiences of women and under‑represented 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

The Computer Sciences (CS) department of the Barcelona Supercomputing Center is participating in different projects around the RISC‑V ecosystem and HPC. We are looking for a software engineer that wants to push forward this ecosystem by implementing support for vector support code generation and other features that can speed‑up typical HPC applications when running on RISC‑V.

Key Duties

• Improve the code generation for the RISC‑V Vector Extension to make the most of the available instruction set when it comes to segmented memory accesses.


• Collaborate with upstream LLVM/Clang to the extent possible and contribute if there is interest in the LLVM community for the implemented features.

Requirements

• Education
  
  
  • Bachelor or Master degree in Computer Science.
  
  
  
  


• Essential Knowledge and Professional Experience
  
  
  • Good skills in C++.
  
  
  • Experience in compiler development.
  
  
  • Knowledge of LLVM and Clang codebases.
  
  
  
  


• Additional Knowledge and Professional Experience
  
  
  • Good knowledge of Linux low level interfaces would be a plus.
  
  
  • Knowledge of HPC architectures and systems would be a plus.
  
  
  
  


• Competences
  
  
  • Have good communication and interpersonal skills to be able to work within a team to complete tasks on schedule.
  
  
  • Show a problem‑solving, can‑do, pro‑active and result‑oriented attitude.
  
  
  • Be keen to deliver good quality code and follow good practices in the industry.
  
  
  • Be curious and willing to learn about LLVM, RISC‑V and HPC.
  
  
  
  

Conditions

• The position will be located at BSC within the Computer Sciences 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: November 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

• 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 [e-mail].

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.

Equality & inclusion

We promote an inclusive environment and welcome applications from all backgrounds.