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Gonzalo Diez DavilaGD

Gonzalo Diez Davila

SaaS & Full-Stack Developer | Next.js, Node.js, AP

€230/day
Alicante, ES
3-7 years

Average response time: 1 hour

About Gonzalo

I have experience working in production environments with modern architectures, including microservices and Backend-for-Frontend (BFF) patterns. I work across the full stack, building robust backend systems and clean, efficient frontends.

I can help you with:
  • Full-stack application development (from idea to production)
  • API design, integrations, and system connections
  • Backend systems using Java and TypeScript
  • Microservices and scalable architectures
  • Mobile app integrations (React Native)

I focus on delivering reliable, maintainable solutions that solve real business problems — not just writing code.

If you need someone who can quickly understand your needs and build solid, production-ready systems, feel free to reach out.
  • Spanish

    Native or bilingual

  • English

    Native or bilingual

  • Catalan

    Fluent

Remote only
Primarily works remotely

Experience

  • Secture
    Software Engineer
    BANKING AND INSURANCE
    January 2025 - April 2025 (3 months)
    Madrid, Spain
    Framer - Plugin Development. Designed and implemented modular React-based interfaces for custom Framer plugins, enabling dynamic content rendering and extensibility. Integrated external APIs such as Greenhouse and Ashby to fetch and visualize job board and candidate data in real time. Developed backend logic with Node.js, handling authentication, request optimization, and data formatting for plugin consumption. Used Jest to create unit and integration tests, achieving >90% test coverage and improving reliability during iterations. Leveraged Notion AI for auto-generating content templates and UI components, reducing manual effort and speeding up prototype creation by ~30%. Optimized component reusability and code structure to support multiple use cases within the Framer plugin framework.
    Node.js JavaScript React.js API REST SAAS
  • LeadingDev
    Full stack Software Engineer
    TECH
    April 2023 - January 2025 (1 year and 9 months)
    Madrid, Spain
    Skade IoT - Real-time road monitoring platform Designed scalable REST API (Rails) to manage GPS data from 4+ device types. Developed UI from scratch (CoffeeScript + MVVM), reducing bundle size by ~30% and improving initial load time by 40% Enhanced caching and query efficiency, improving response time by 2x. Enabled modular hardware integration, increasing system flexibility for clients. CFT - Counter Trerorist Financing Tool Developed modular backend services (Rails + Docker) with full AWS integration (S3, EC2, RDS). Created automated scraper to process 10+ public/private data sources daily, increasing detection coverage by 60% Reduced false positives by 25% through improved search heuristics. Contributed to UI enhancements for search, filtering, and results analysis. Developed front-end components in React + TypeScript Richmond Studio, a ELT
    Ruby on Rails React.js JavaScript API REST QA testing
  • NTT DATA nl
    Software Engineer – Backend & Distributed Systems (NTT DATA)
    DIGITAL AND IT
    November 2025 - Today (7 months)
    Madrid, Spain
    Working in a production environment focused on backend systems, microservices, and mobile integrations.

    Key responsibilities include:

    Designing and maintaining Backend-for-Frontend (BFF) layers

    Developing and supporting microservices using Java and TypeScript

    Integrating backend systems with mobile applications (React Native)

    Troubleshooting and resolving issues in live, production environments

    Ensuring system reliability, scalability, and performance

    This experience has given me strong exposure to distributed architectures, real-time problem solving, and production-grade systems.
    Back-End development Java React Native MySQL Typescript

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Education

  • Full Stack Developer Bootcamp
    Skylab Coders Academy
    2023
    Full Stack Developer Bootcamp
  • FPB
    IES Beatriu Fajardo de Mendoza
    2021
    FPB

Skill set

Categories