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Daniel NúñezDN

Daniel Núñez

Full Stack Engineer (Ruby on Rails) & Data

349 €/día
Valencia, ES
3-7 años

Tiempo medio de respuesta: 1h

Acerca de Daniel

Ruby on Rails developer with a strong data background, I build production-grade web applications that are cleanly architected, well-tested, and easy to evolve. I’m comfortable owning features end-to-end: designing the domain model, building Rails controllers/services, shipping polished UI with modern frontend tooling (Hotwire/Turbo/Stimulus, ViewComponent, Tailwind), and ensuring performance and reliability in real-world usage.

On the data side, I bring hands-on experience with PostgreSQL and analytics-style workflows: writing efficient queries, shaping data for reporting, integrating external APIs/data sources, and building search/filter experiences that feel fast and intuitive. I care a lot about code quality and maintainability—clear boundaries, pragmatic refactors, and automated tests (RSpec) so teams can ship confidently.

I can help teams deliver high-impact Rails features, improve data pipelines/reporting, and turn messy requirements into simple, dependable software. I value direct communication, predictable delivery, and leaving the codebase better than I found it.
  • Español

    Bilingüe o nativo

  • Inglés

    Competencia profesional completa

Acepta trabajo presencial
Valencia (hasta 50 km)

Experiencia

  • Trendence Institut
    Full Stack Engineer (Ruby on Rails) & Data
    AGENCIAS DE SUBCONTRATACIÓN
    mayo de 2024 - Hoy (2 años y 1 mes)
    Berlin, Germany
    Own the development and maintenance of multiple Ruby on Rails backend applications backed by PostgreSQL. Design and implement RESTful APIs supporting data-intensive products and internal analytics use cases. Build end-to-end features, from data modeling and backend logic to deployment and monitoring. Establish and maintain automated testing (RSpec) and CI/CD pipelines using GitHub Actions.
    Collaborate with product, UX, and data stakeholders to translate requirements into scalable technical solutions.
    Ruby on Rails PostgreSQL Gestión CI/CD SQL Desarrollo de servicios Backend
  • CareerFoundry
    Data Analytics Trainee (SQL
    enero de 2023 - diciembre de 2023 (11 meses)
    Completed an intensive, project-based program covering SQL, Python, data modeling, and data visualization. Delivered multiple end-to-end analytics projects involving data cleaning, transformation, analysis, and presentation.
  • Trendence Institut
    Data Science Intern (Analytics & SQL)
    AGENCIAS DE SUBCONTRATACIÓN
    enero de 2024 - abril de 2024 (3 meses)
    Berlin, Germany
    Performed exploratory data analysis and data quality checks using SQL and Python. Built and maintained monthly reports and dashboards (Tableau) to support business and product decision-making. Worked closely with DevOps, Data engineering and analytics teams to align data outputs with application needs.
    SQL Python (Data manipulation) Integración de datos (ETL, ELT y almacenamiento de datos) Tableau software

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