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José LeónJL

José León

Web Developer | HTML, CSS, JavaScript, Angular

€100/day
Palencia, ES
0-2 years

Average response time: 1 hour

Freelancer profile translated to English.
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About José

I am a junior web developer specializing in creating clear, functional solutions tailored to the real needs of each client.
I focus on responsive front-end development (HTML, CSS, JavaScript) and can implement custom functionalities on static or dynamic sites.
If you need an effective landing page, a modern corporate website, or specific adjustments to your current page, I can help you have it ready in a few days.
I get 100% involved in every project and accompany you from the initial idea to the final delivery.
Commitment, clear communication, and punctual delivery. Let's talk about your project.
  • Spanish

    Native or bilingual

  • English

    Fluent

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

Experience

  • NTT DATA
    Web Developer
    SOFTWARE PUBLISHING
    January 2025 - May 2025 (4 months)
    • Resolution of functional and technical incidents in development and production environments.
    • Development of corrective actions in Java, JSP, HTML, JavaScript, and SQL code, including testing and technical documentation.
    • Analysis, insertion, and validation of data in Oracle databases.
    • Code quality analysis using SonarQube.
    • Deployment of applications to validation and production environments, managing versions with SVN.
    • Generation of technical documentation for changes and processes.
    • Internal training in Artificial Intelligence applied to IT development through various company courses. Work under Agile/Scrum methodology with daily follow-up meetings. Use of development environments such as Eclipse.
    SonarQube Eclipse Oracle SQL Developer
  • Varias empresas
    Teleoperator / Salesperson
    January 2020 - January 2024 (4 years)
    Valladolid, Spain
    Client management, commercial acquisition, and objective-based work in the telecommunications and energy sectors.
    Client Communication Teamwork Time Management
  • CLA / TRIGO
    Quality Operator
    January 2018 - January 2020 (2 years)
    Palencia, Spain
    Quality control of automotive parts, with attention to detail and compliance with technical protocols.
    Autonomy Problem Solving Accessibility Time Management Client Communication

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Education

  • Higher Technician in Web Application Development (DAW)
    ILERNA
    2025
    Técnico Superior en Desarrollo de Aplicaciones Web (DAW)
  • Baccalaureate in Humanities and Social Sciences
    Instituto Jorge Manrique
    2013
    Bachillerato de Humanidades y Ciencias Sociales

Certifications

  • Introduction to AI Development Course
    BIG school
    2025
    Security Audit (Security by Design) AI Copywriting Structured Requirements Flow (Traceability) Test-Driven Development (AI TDD) Accelerated Learning and Directed Research Flow Automation (n8n) Specialist Agent Orchestration Context Management and Code Style Refined Prompt Engineering (Strategic Analysis) Accelerated Prototyping and One-Click Deployment (MVP)

Skill set

Categories