You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Malt Strategy
New report
Malt Tech Trends 2026
José Sierra SalamancaJS

José Sierra Salamanca

Software Engineer

€100/day
Málaga, ES
3-7 years
Java
Spring boot
SQL
Linux
HTML5

Average response time: 1 hour

About José

I’m a software engineer specialized in backend development with Java and Spring Boot. I work mainly on enterprise applications, developing and maintaining REST APIs, system integrations, SQL queries, internal services, and process automation tools.

I can help with backend feature development, bug fixing, external API integrations, SQL optimization, backend code reviews, and technical maintenance of Java applications.

My experience includes Java, Spring Boot, JPA/Hibernate, Oracle SQL, Maven, Git, Swagger/OpenAPI, Feign Clients, MapStruct, and Lombok.

I focus on understanding the problem, providing practical solutions, and delivering clean and maintainable code.

I’m available for project-based work, hourly support, and backend maintenance tasks.

  • Spanish

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Indra
    Software Engineer
    March 2023 - Today (3 years and 3 months)
    Málaga, Spain
    My work involves backend, frontend, and database development for enterprise applications used by citizens, lawyers, legal professionals, judges, court staff, and public institutions.

    I also collaborate with functional analysts and stakeholders to clarify requirements, analyze technical needs, and deliver reliable software in regulated public-sector environments where security, traceability, stability, and long-term maintainability are critical.
    SQL Java Spring boot Angular Typescript
  • Freelance
    Freelance Linux System Customization & Automation
    January 2021 - January 2023 (2 years)
    Developed scripts to automate system setup, package installation, and environment configuration, while also resolving client-specific issues remotely.

Recommendations

Be the first to recommend José

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

  • Engineering Degree, Software
    Universidad de Málaga
    Engineering Degree, Software
  • Cambridge English B1 Certificate
    University of Cambridge
    2016
    Cambridge English B1 Certificate

Categories