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Javier Lopez MartinJL

Javier Lopez Martin

Data Analyst & Web Dev | Power BI, SQL, Make

€200/day
Alicante, ES
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Javier

Hello! I am a professional in the technology sector specializing in data analysis, web development, and business process automation.

I currently balance my work in a company with freelance projects remotely. I offer closed technical solutions and objective-based deliveries, adapting to each client's needs outside of my office hours.

🚀 What are my areas of expertise?

📊 1. Business Intelligence & Data:

Data modeling and creation of interactive Dashboards in Power BI and Sisense.

Complex queries, optimization, and database management in SQL Server.

⚙️ 2. Process Automation (Make):

Connecting applications (CRMs, Notion, Emails, Spreadsheets) to eliminate repetitive manual tasks.

Integration of secure payment gateways with Stripe.

💻 3. Static and Rapid Web Development:

Clean layout in HTML5 and CSS3 (without heavy templates) using VS Code and GitHub Copilot.

Modern and agile deployment on Vercel (maximum loading speed).

Configuration of multilingual websites (Spanish, English, and others).

🤝 How will we work?
I work by milestones and clear objectives. I will communicate with you transparently and ensure you understand every step of the project. If you are looking for clean code, visual data reports, or to automate your business, let's talk about your project!
  • Spanish

    Native or bilingual

  • English

    Fluent

  • Russian

    Conversational

  • Catalan

    Conversational

  • German

    Basic

Remote only
Primarily works remotely

Experience

  • Omada Identity
    Senior BI Developer
    SOFTWARE PUBLISHING
    January 2023 - Today (3 years and 5 months)
    Alicante, Spain
    Responsible for the development and maintenance of the company's analysis platform through dashboards (Sisense) Azure (pipelines, repos, boards), JavaScript, Powershell, SQL.
    Creation of pipelines with C# and PowerShell in Azure DevOps for CI/CD integration.
    Migration from SSRS to Sisense to provide a more flexible, scalable, and efficient BI interface for the user.
    JavaScript Sisense SQL Server Microsoft Azure Data analysis
  • EOI (Escuela Organización Industrial)
    Teacher
    EDUCATION AND E-LEARNING
    January 2024 - March 2025 (1 year and 2 months)
    Alicante, Spain
    Teacher of Power BI in the Expert Course in Data Analysis and Big Data. Supervision of students in their projects with Power BI, Python, and MySQL.
    Preparation of documents (Word, Powerpoint) to explain concepts of data modeling, ETL, and data visualization in Power BI.
    Maintenance of backup and restore of SQL Server databases.
    Microsoft Power BI SQL Server Python MySQL Teaching
  • Tempe Grupo Inditex
    Analyst-Programmer
    RETAIL (LARGE RETAILERS)
    November 2019 - August 2023 (3 years and 9 months)
    Elche, Spain
    BI Analyst with extensive functional knowledge from budgeting/purchasing to sales, including warehouse and store distribution. Taking functional requirements from the user and translating them to the technical team. Responsible for data integrity and quality: Data modeling and reporting project with Microsoft BI technology (SSIS / SSAS / SSRS / Power BI).
    Microsoft Power BI SQL Server SSIS SSAS Snowflake

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Education

  • University of Alicante
    2012
  • Certified: Power BI Data Analyst Associate Power BI Data Analyst Associate Certificate MCSA: SQL 2016 Business Intelligence Development Certification (MS 70-767 + MS 70-768) Certificate
    Microsoft
    Certified: Power BI Data Analyst Associate Certificado Power BI Data Analyst Associate Certificación MCSA: SQL 2016 Business Intelligence Development (MS 70-767 + MS 70-768) Certificado

Skill set

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