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Daniel OsorioDO

Daniel Osorio

Full-Stack Software Engineer

€550/day
Brussels, BE
8-15 years

Average response time: 1 hour

About Daniel

I am a versatile full-stack engineer who can translate your product vision into clean, maintainable code and reliable deployments. I build end-to-end web and mobile applications using Python (Django, FastAPI), JavaScript/TypeScript (Node.js, React, Vue), and Docker-powered CI/CD pipelines to deliver scalable, high-quality software on time.

I combine strong communication skills with practical DevOps know-how (Docker, GitHub Actions, Azure/Google Cloud), ensuring smooth collaboration and automated, zero-downtime releases. My agile-minded approach means I don’t just write code, I help you define scope, prioritize features, and iterate rapidly for maximum ROI.

Here are a few examples of what I can deliver:
  • Progressive Web App & API Refactor: Modernized and refactored ServeNow mobile into a PWA; migrated a PHP backend to Node.js + Express, added OpenAPI docs, Redux state management, caching with Redis, and CI/CD pipelines, boosting performance and maintainability.
  • AI-Driven Storytelling Platform: Built StorySprout from scratch with Nuxt/Vue frontend and Django REST API; integrated OpenAI and Anthropic for text, image, and audio generation; implemented Stripe subscriptions and Dockerized CI/CD for seamless deployments
  • Custom WordPress & Drupal Solutions: Developed bespoke plugins—photo-voting systems with anomaly detection, multi-level download portals, quote-management platforms—with PHP, MySQL, jQuery, and AJAX to meet unique business workflows.
Whether you need a robust MVP, a feature-rich SaaS module, or automated AI/NLP tooling to streamline your operations, I bring the full spectrum of skills and a proven delivery record.

Let’s discuss how I can help you turn your next idea into reality.

Get in touch to explore your project!

Thank you for your time and consideration.

Daniel
  • Italian

    Native or bilingual

  • Spanish

    Native or bilingual

  • French

    Fluent

  • Dutch

    Conversational

  • English

    Native or bilingual

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

Experience

  • Serve The City | Freelance
    LEAD FULL-STACK SOFTWARE ENGINEER
    December 2023 - December 2024 (1 year)
    Brussels, BU, Belgium
    DESCRIPTION
    Serve The City is a nonprofit that connects volunteers with local charitable organizations. My primary responsibility was to modernize, refactor, and create a PWA of the ServeNow mobile application, enhancing performance, speed, and user experience. I led the end-to-end development effort in close collaboration with the project manager, ensuring timely and high-quality delivery.

    TASKS & ACHIEVEMENTS
    • Led a complete refactor of the ServeNow Mobile App (both front and back end), boosting performance and maintainability.
    • Migrated the RESTful API from PHP to Node.js + Express, adding new routes and logic to streamline client-server communication.
    • Enhanced the front end with React Ionic, implemented Redux for state management, and added multi-language support, enabling successful multi-region features.
    • Designed a caching strategy (local cache, Redis, Redux) and introduced OpenAPI documentation for the RESTful API.
    • Established robust testing practices, reducing bugs introduced during deployment and improving code reliability.
    • Created a Progressive Web App (PWA) version of the mobile application that is now accessible via
    web.servenow.app
    • Set up CI/CD pipelines using Docker, GitHub Actions, and Azure to automate deployments, increase frequency, and minimize manual errors.
    • Collaborated with the project manager to define scope, prioritize tasks, and ensure timely, high-quality deliveries.
  • StorySprout
    FULL-STACK SOFTWARE ENGINEER
    June 2023 - Today (3 years)
    Brussels, BU, Belgium
    (free-time/concurrently)
    DESCRIPTION
    StorySprout is an AI-driven platform for generating personalized children's stories. I built it from the ground up as a self-initiative project to give parents and caregivers a quick, interactive way to craft custom narratives. Each story features unique images and optional voice narration, and a subscription model allows users to generate additional stories on demand.

    TASKS & ACHIEVEMENTS
    • Built the front end in Vue, then migrated to Nuxt (leveraging Nuxt UI Pro) for improved UX and efficient rendering.
    • Created a RESTful API with Django and the Django REST Framework for a robust authentication system and a comprehensive user dashboard.
    • Integrated OpenAI and Anthropic APIs to generate children's stories (text, illustrations, and audio), enhancing storytelling capabilities.
    • Established thorough backend testing, streamlining deployments, and minimizing production issues.
    • Integrated Stripe for subscription management, enabling seamless payments and recurring revenue.
    • Set up CI/CD pipelines using Docker, GitHub Actions, and Azure for automated builds, tests, and deployments.
  • Python
    AUTOMATION & NLP ENGINEER
    January 2023 - Today (3 years and 5 months)
    Brussels, BU, Belgium
    SELF Self-initiative Project Brussels, Belgium Jan 2023 - Current (free-time/concurrently)
    DESCRIPTION This role encompassed developing automation solutions and NLP applications to streamline day-to-day tasks and explore creative AI use cases. Operating independently, I leveraged Python and various AI frameworks to enhance efficiency and experiment with novel text-processing capabilities.

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Education

  • Master of Computer Science
    Universidad Simón Bolívar
    2009
    Bachelor & Master in Computer Software Engineering
  • Master of Computer Science
    POLITECNICO DI TORINO
    2008
    International Exchange Program - Master in Computer Science

Skill set

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