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Arcadi OlallaAO

Arcadi Olalla

Backend developer | .NET C#

€350/day
Madrid, ES
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Arcadi

I am a backend developer with over 9 years of experience building scalable systems for SaaS products and fintech platforms. I specialize in .NET (C#) and relational and non-relational databases (SQL Server, PostgreSQL, MongoDB), focusing on clean architecture, API design, and data performance.
I have worked on the entire backend cycle: data model design, REST APIs, query optimization, and integration with external services (payment gateways, banking APIs, reporting tools).
I work well with product teams, communicate clearly, and adapt quickly to ongoing projects. If you need a reliable developer for a specific sprint or as a recurring technical collaborator, I can help.
  • Spanish

    Native or bilingual

  • English

    Fluent

  • Catalan

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Appspace
    Back-end Developer
    November 2022 - Today (3 years and 7 months)
    Barcelona, Spain
  • NEORIS
    Xamarin Developer
    August 2020 - November 2022 (2 years and 3 months)
  • SII Concatel
    .NET Developer - Programmer Analyst
    March 2020 - August 2020 (5 months)
    Greater Antilles, CE, Haiti

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Education

  • Degree in Engineering, Computer Engineering
    Universitat Oberta de Catalunya
    2024
    Grado en Ingeniería, Ingeniería informática
  • Higher Technician in 3D Animation, Games and Interactive Environments
    CES, Higher School of Image and Sound
    2016
    Técnico Superior en Animación 3D, juegos y entornos interactivos

Skill set

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