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Ignacio AlvarezIA

Ignacio Alvarez

Backend Java & Spring | APIs and Integrations

€350/day
Gijón, ES
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Ignacio

I am a backend developer specializing in Java and Spring, with experience working on enterprise applications, REST APIs, integrations, and databases.

Throughout my career, I have participated in both the development and maintenance of platforms and in resolving critical production incidents. I am accustomed to investigating errors, understanding existing code, locating the cause of problems, and applying clear and maintainable solutions.

I can help you with the development and evolution of backend services, creation and modification of APIs, integrations between systems, code refactoring, bug fixing, automation through scripts, and database migrations or queries.

I also have experience in high-availability environments, support for large companies' applications, and on-call duties, which has allowed me to develop autonomy, analytical skills, and fluency in working under pressure.

I primarily work with Java, Spring Boot, SQL, REST APIs, Git, and Docker. I adapt easily to initiated projects and I am committed to understanding both the technical aspects and the business needs before proposing a solution.

I seek to collaborate on projects where I can contribute experience, clear communication, and reliable results.
  • Spanish

    Native or bilingual

  • English

    Conversational

Can work on-site
Gijón (up to 50km)

Experience

  • Plexus Tech
    Software Engineer
    June 2023 - Today (3 years and 2 months)
    Gijon, AS, Spain
    Design and implementation of microservices architectures and hexagonal architecture, as well as refactoring of existing systems towards more decoupled and maintainable solutions.
    Application of SOLID principles, Clean Code, and use of modern backend ecosystem tools (Docker, OpenAPI, resilience).
    Docker REST API Spring Boot Java Cyberark
  • Minsait
    System Engineer
    January 2022 - June 2023 (1 year and 5 months)
    Design and implementation of microservices architectures and hexagonal architecture, as well as refactoring of existing systems towards more decoupled and maintainable solutions.
    Application of SOLID principles, Clean Code, and use of modern backend ecosystem tools (Docker, OpenAPI, resilience).
  • CDS, a Hewlett Packard Enterprise company
    Business Applications Engineer
    August 2018 - August 2021 (3 years)
    Leon, Spain
    Support and Development Technician — Orange and Movistar

    I was part of the technological support teams at Orange and Movistar, working in critical environments with high-availability services.

    My main responsibilities were investigating and resolving critical incidents, analyzing errors in applications and databases, and coordinating with other technical teams to restore services quickly.

    I also participated in on-call shifts, monitoring production incidents, and performing small developments, scripts, corrections, and database migrations aimed at improving platform stability and performance.

    This experience allowed me to develop a great capacity for analysis, autonomy, management of situations under pressure, and communication with technical and business teams.

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Education

  • Scrum Master Frontend Development with Angular and Backend Spring Boot 3, REST API, JPA, Spring Security OAuth2, JWT, Azure Socket: Essential Web Development
    Scrum Master Desarrollo frontend con Angular y backend Spring Boot 3, API REST, JPA, Spring Security OAuth2, JWT, Socket Azure: Desarrollo web esencial
  • Computer Engineering
    University of León
    2018
    Ingeniería informática

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