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I'm Mario Castillo Gutierrez, a Junior Engineer at NTT DATA based in Barcelona, Spain. I'm passionate about data-driven systems, software development, and Business Intelligence, and I enjoy solving complex problems and learning new technologies. I thrive on turning analytics into scalable, real-world impact by collaborating on data ingestion, dashboards, and API integrations. I love contributing to projects that combine analytics, scalability, and practical outcomes.…I'm Mario Castillo Gutierrez, a Junior Engineer at NTT DATA based in Barcelona, Spain. I'm passionate about data-driven systems, software development, and Business Intelligence, and I enjoy solving complex problems and learning new technologies. I thrive on turning analytics into scalable, real-world impact by collaborating on data ingestion, dashboards, and API integrations. I love contributing to projects that combine analytics, scalability, and practical outcomes.

Mario Castillo Gutierrez

Web Developer, Full Stack Developer, Front-End Developer, +2

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I'm Mario Castillo Gutierrez, a Junior Engineer at NTT DATA based in Barcelona, Spain. I'm passionate about data-driven systems, software development, and Business Intelligence, and I enjoy solving complex problems and learning new technologies. I thrive on turning analytics into scalable, real-world impact by collaborating on data ingestion, dashboards, and API integrations. I love contributing to projects that combine analytics, scalability, and practical outcomes.…I'm Mario Castillo Gutierrez, a Junior Engineer at NTT DATA based in Barcelona, Spain. I'm passionate about data-driven systems, software development, and Business Intelligence, and I enjoy solving complex problems and learning new technologies. I thrive on turning analytics into scalable, real-world impact by collaborating on data ingestion, dashboards, and API integrations. I love contributing to projects that combine analytics, scalability, and practical outcomes.

Available to hire

I’m Mario Castillo Gutierrez, a Junior Engineer at NTT DATA based in Barcelona, Spain. I’m passionate about data-driven systems, software development, and Business Intelligence, and I enjoy solving complex problems and learning new technologies.

I thrive on turning analytics into scalable, real-world impact by collaborating on data ingestion, dashboards, and API integrations. I love contributing to projects that combine analytics, scalability, and practical outcomes.

Skills

Experience Level

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

Spanish; Castilian

Fluent

Catalan; Valencian

Fluent

English

Advanced

Work Experience

Junior Engineer at NTT DATA

October 1, 2025 - September 1, 2025

Working in the Data Department for client Ecoembes, focused on data ingestion, Power BI dashboards, and process optimization in Azure Databricks. Collaborating in projects involving ETL pipelines, Delta Lake management, and cluster performance analysis. Maintaining dashboards and KPIs for production and ingestion monitoring.