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Donato PestanaDP

Donato Pestana

Supermalter

Full Stack C# .Net Developer, Backend, Frontend

€400/day
3 projects
Madrid, ES
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Donato

My name is Donato Pestana and I am a Full Stack Analyst Programmer and a passionate Project Leader and Scrum Master with over 18 years of experience in Microsoft and .Net technologies. I am open to roles as a Full Stack Engineer Developer, Back-end or Front-end Programmer Architect. I enjoy collaborating with high-level stakeholders and other developers to create solutions that add value and meet client expectations.


I have successfully transformed over 15 applications based on WebForms and 3-tier architectures to new architectures such as DDD architectures with Angular and the most recent ones to microservices architectures, using SQL Server for data access and Azure DevOps CI/CD with Trunk-based methodologies for continuous deployments, creating in the process a standard of development templates for new projects that helped improve the company's development standards, enhancing the company's development productivity.


I possess proven skills in frontend and backend development, web services of all types including microservices, database design and maintenance, and cybersecurity best practices. Additionally, I stay updated with recent courses in modern architecture development.


I appreciate the opportunity to introduce myself and hope to discuss how my experience and skills can benefit your company.
  • Spanish

    Native or bilingual

  • English

    Conversational

  • Portuguese

    Fluent

Can work on-site
Madrid (up to 50km)

Experience

  • Adevinta Spain - Jobs
    Backend Analyst Programmer
    HUMAN RESOURCES
    December 2024 - Today (1 year and 5 months)
    Madrid, Spain
    I continue to support the Adevinta team by performing maintenance and development of new features in both backend and frontend, focusing on ensuring performance and functionality. I faced the challenge of high user traffic volume, ensuring optimal application performance through unit and functional testing, as well as continuous monitoring with logs and metrics. In the backend, I used C# .Net, Kafka for real-time queue management, and Elasticsearch for data search optimization. I implemented GitHub Actions along with AWS for microservices deployment. In the frontend, I worked with WebForms and MVC with JavaScript and jQuery to maintain old projects, and ReactJs in new implementations. For batch processes, I used Python. By resolving bottlenecks in critical tasks, I have managed to streamline the team's workflow, allowing them to advance on key priorities and reducing the overall workload.
    C# .NET AWS React.js ASP.NET MVC Kafka GitHub Microservices Javascript / JQuery JavaScript ASP.NET SQL Server Transact-SQL Web Development Front-End Development Back-End Development Fullstack API REST API REST Typescript HTML5 HTML CSS3 CSS
  • Adevinta Spain - Jobs
    Malt logoOn Malt
    Backend Analyst Programmer
    December 2024 - May 2025 (5 months)
    Madrid, España
    I continue to support the Adevinta team by performing maintenance and development of new features in both backend and frontend, focusing on ensuring performance and functionality. We continue with the challenges of high user traffic volume, hacking attempts, and the implementation of all types of fixes to make the application more robust, ensuring optimal application performance through unit and functional testing, as well as continuous monitoring with logs and metrics. During this time, I have also managed several incidents, coordinating the involved teams to resolve them with the least possible impact. In the backend, I used C# .Net, Kafka for real-time queue management, and Elasticsearch for data search optimization. I made modifications to GitHub Actions along with AWS for microservices deployment. In the frontend, I worked with WebForms and MVC with JavaScript and jQuery to maintain old projects, and ReactJs in new implementations. For batch processes, I used Python. By resolving bottlenecks in critical tasks, I have managed to streamline the team's workflow, allowing them to advance on key priorities and reducing the overall workload.
    .NET WCF Typescript JavaScript Web Development CI/CD DDD Javascript / JQuery Microservices Back-End Development Architecture Patterns .net core SOLID SQL React.js Entity Framework ASP.NET Unit Test C# jQuery Bootstrap Web Architecture SQL Server ASP.NET MVC Scrum T-SQL Design Patterns Database Patterns Web Services Microservices Git REST API C# .NET SQL Server Microservices AWS React.js Fullstack Kafka Docker API git GitHub Github Actions Python Java Kotlin
  • Adevinta Spain - Jobs
    Malt logoOn Malt
    Backend Analyst Programmer
    June 2024 - December 2024 (6 months)
    Madrid, España
    Support for the Adevinta team in maintenance and development of new features in both backend and frontend, focusing on ensuring performance and functionality. Faced the challenge of high user traffic volume, ensuring optimal application performance through unit and functional testing, as well as continuous monitoring with logs and metrics. In the backend, I used C# .Net, Kafka for real-time queue management, and Elasticsearch for data search optimization. I implemented GitHub Actions along with AWS for microservices deployment. In the frontend, I worked with WebForms and MVC with JavaScript and jQuery to maintain old projects, and ReactJs in new implementations. For batch processes, I used Python. By resolving bottlenecks in critical tasks, I have managed to streamline the team's workflow, allowing them to advance on key priorities and reducing the overall workload.
    .NET Typescript JavaScript Web Development CI/CD SOAP DDD Javascript / JQuery Microservices Back-End Development Architecture Patterns SOLID SQL React.js Entity Framework ASP.NET Unit Test C# jQuery Bootstrap Web Architecture SQL Server ASP.NET MVC Scrum T-SQL Design Patterns Web Services Microservices Git REST API Web Development Full Stack Development Back-End Development .NET C# SQL Server Microservices AWS React.js ASP.NET MVC ASP.NET Kafka Elasticsearch JavaScript Typescript jQuery Atlassian JIRA GitHub Github Actions Python Java Docker

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Education

  • Computer Science Degree at Universidad Nueva Esparta, Software Engineering
    Universidad Nueva Esparta
    2006
    Licenciado en Computación en la Universidad Nueva Esparta, Ingeniería de Software
  • Application Development Foundation, Computer Science
    Microsoft
    2010
    Application Development Foundation, Computer Science

Skill set

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