You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Malt Strategy
Saray PerezSP

Saray Perez

Freelance Software Developer

€150/day
Madrid, ES
3-7 years
C# Development
.NET / .NET Core
ASP.NET / Web API
SQL / Database Development
Software Architecture & Debugging

Average response time: 1 hour

About Saray

I am a freelance software developer with over 5 years of experience specializing in C# and .NET technologies. I help businesses design, build, and optimize applications tailored to their needs, whether it’s creating new software from scratch, enhancing existing systems, or fixing critical issues. My services include back-end development with ASP.NET Core, database design with SQL Server/PostgreSQL, API integration, and performance optimization.

I work on a task-based, fixed-fee model, ensuring transparency and predictable results. Clients value my ability to deliver reliable, well-documented, and tested solutions on time. If you need a dedicated developer to bring your project to life or improve your current application, I would be happy to help.

  • English

    Native or bilingual

  • Spanish

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • SOFTEAM
    Software Developer
    DIGITAL AND IT
    June 2022 - January 2025 (2 years and 7 months)
    Madrid, Spain
    Designed and implemented software solutions using C# and .NET Core.

    Developed and maintained REST APIs for client applications.

    Improved performance and reliability of existing codebases.

    Collaborated with international clients on a task-based, fixed-fee model.

    Delivered well-documented and tested code within agreed deadlines.
    Software Architecture & Debugging .NET / .NET Core ASP.NET / Web API C# Development CI/CD Management
  • SILICOM
    Freelance Software Developer
    DIGITAL AND IT
    February 2020 - May 2022 (2 years and 3 months)
    Madrid, Spain
    • Designed and developed software modules and applications in C#.
    • Collaborated with international clients on fixed-fee, task-based projects.
    • Delivered high-quality code with documentation and testing.
    • Integrated applications with existing systems and optimized performance.
    C# Development Software Architecture & Debugging .NET / .NET Core CI/CD Management

Recommendations

Be the first to recommend Saray

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Signup to reveal

Education

  • Software Development Training Program
    2018
    Software Development Training Program
  • Diploma in Software Development
    Software University (SoftUni), Bulgaria
    2023
    Completed intensive training in C# and .NET development, including object-oriented programming, database design, and web application development.

Certifications

  • C# .NET Software Development
    Microsoft
    C# .NET / .NET Core Object-Oriented Programming (OOP) ASP.NET SQL

Skill set

Design Patterns
CI/CD Management
Cybersecurity Incident Management
Embedded software

Categories