Mid-Level Full Stack WEB Developer (.NET)

Barcelona Supercomputing Center; Barcelona; Presencial; EUR 52.000 - 62.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Restaurant tickets

Private health insurance

Relocation support

Flexible working hours

Descripción de la vacante

Barcelona Supercomputing Center is seeking a Mid-Level Full Stack Developer (.NET) to maintain and enhance an internal time-tracking and reporting platform. You will develop backend features in .NET Core, build Razor-based UIs, and ensure robust REST API integration with SQL Server.

The role requires 2–4 years of .NET experience, frontend proficiency, and fluency in Spanish and English. Barcelona campus, full-time with competitive benefits and relocation support.

Formación

• Degree in Computer Engineering, Information Technology, or similar.
• 2–4 years of experience with C# and .NET Core / .NET 6+.
• Experience with Entity Framework and SQL Server.
• Experience working with Razor Views.
• Strong knowledge of HTML, CSS, JavaScript, jQuery.
• Experience with web deployment (Kestrel/HTTPS) and SMTP/authentication setup.
• Fluent in Spanish and English; Catalan is a plus.

Responsabilidades

• Develop end-to-end features using .NET Core / .NET 6+ on the backend and Razor Views + HTML on the frontend.
• Participate in architecture design and technical decision-making.
• Contribute to code quality improvements, code reviews, and best practices.
• Integrate REST APIs and work with SQL databases.
• Provide support to the financial justification team regarding the platform.

Conocimientos

C#

.NET Core / .NET 6+

Entity Framework

SQL Server

Razor Views

HTML

CSS

JavaScript

jQuery

Web deployment

SMTP / authentication

Spanish & English

Educación

Degree in Computer Engineering

Degree in Information Technology

Herramientas

SQL Server

ASP.NET Identity

Quartz.NET

QuestPDF

EPPlus

Serilog

Descripción del empleo

Job Reference

405_26_MNG_ISS_NET

Starting date: ASAP

Position

Mid-Level Full Stack WEB Developer (.NET)

Closing Date

Thursday, 15 October, 2026

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

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

We are looking for a Mid-Level Full Stack Developer with experience in .NET to join an internal platform used for time tracking and reporting in audit processes.

The selected candidate will be responsible for maintaining, improving, and supporting the application.

Key Duties

• Develop end-to-end features using .NET Core / .NET 6+ on the backend and Razor Views + HTML on the frontend
• Participate in architecture design and technical decision-making
• Contribute to code quality improvements, code reviews, and best practices
• Integrate REST APIs and work with SQL databases
• Provide support to the financial justification team regarding the platform

Requirements

• Education
  • Degree in Computer Engineering, Information Technology, or similar
• Essential Knowledge and Professional Experience
  • 2–4 years of experience with C# and .NET Core / .NET 6+
  • Experience with Entity Framework and SQL Server
  • Experience working with Razor Views
  • Strong knowledge of HTML, CSS, JavaScript, jQuery
  • Experience with web deployment (Kestrel/HTTPS) and SMTP/authentication setup
  • Working fluency in Spanish and English is required, Catalan will be a plus.
• Additional Knowledge and Professional Experience
  • Understanding of REST APIs
  • Nice to have:
    • ASP.NET Identity
    • Quartz.NET for scheduled jobs
    • QuestPDF or similar PDF generation libraries
    • EPPlus for Excel/CSV exports
    • SMTP / automated email sending
    • Serilog
• Competences
  • Autonomy & Proactivity: Ability to work independently and take initiative in development tasks.
  • Technical Ownership: End-to-end responsibility for development, testing, and maintenance.
  • Problem Solving: Diagnose and resolve issues.
  • Clean Code & Best Practices: Experience with .NET best practices, design patterns, and Git.
  • Communication & Collaboration: Clear communication with technical and non-technical staff

Conditions

• The position will be located at BSC within the Management 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: ASAP

Applications procedure and process

• 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].

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.