About Joel
Senior Fullstack Developer with 6+ years of experience building and scaling production-ready web and mobile applications.
I help companies turn ideas into reliable, scalable digital products delivered with clean architecture, strong performance, and long-term maintainability.
I’ve led the development of core SaaS platforms used by corporate clients, taking full technical ownership from architecture design to deployment and maintenance. I work comfortably on live production systems where stability and performance are critical.
How I can help your project
You might need someone who can:
- Understand both business and technical constraints
- Jump into an existing codebase and improve it quickly
- Deliver clean, maintainable code from day one
- Reduce technical debt without breaking production
- Build systems with long-term scalability in mind
That’s exactly where I add value.
Typical projects I work on
- SaaS platforms and B2B applications
- Backend API architecture & performance optimization
- Refactoring legacy systems
- Angular / Ionic applications (web & hybrid mobile)
- Production-ready deployments with Docker & AWS
Core stack
Angular · Ionic · Node.js · NestJS · Symfony · TypeScript · PHP
MySQL · MongoDB · Docker · AWS
Spanish
Native or bilingual
English
Fluent
Catalan
Native or bilingual
Remote only
Primarily works remotely
Experience
- Independent Project – Mobile & Backend ApplicationFullstack DeveloperJanuary 2024 - Today (2 years and 6 months)Barcelona, Spain
- Designed, developed, and deployed SharePath, a production-ready Android application available on the Google Play Store, focused on location-based messaging and real-time interactions.
- Built a map-driven mobile experience allowing users to discover nearby messages, leave content tied to real-world GPS locations, and receive real-time proximity notifications, increasing user engagement.
- Developed the mobile application using Ionic + Capacitor, delivering a native Android experience from a single codebase.
- Designed and implemented a NestJS backend with MongoDB, handling geolocation data, proximity logic, and real-time events.
- Exposed RESTful APIs consumed by the mobile application and implemented core business logic on the backend.
- Containerized and deployed the full system using Docker, ensuring reproducible environments and smooth deployments.
- Took full ownership of the product, including architecture, development, deployment, and ongoing maintenance, following production-level standards.
This project was developed independently to explore mobile-first product development, location-based services, and scalable backend architecture, and reflects my ability to deliver complete products end to end.https://play.google.com/store/apps/details?id=com.sharepath.app - Inaudit Developing BusinessFullstack DeveloperJanuary 2020 - Today (6 years and 6 months)Barcelona, Spain
- Led the end-to-end development of the company’s core SaaS product, owning the full lifecycle from architecture design to deployment and production maintenance.
- Designed and implemented scalable web and hybrid mobile applications using Angular, Ionic + Capacitor on the frontend and NestJS, Symfony, and Node.js on the backend.
- Built and maintained RESTful APIs and business-critical backend services supporting multiple corporate clients.
- Improved system stability, performance, and maintainability through code refactoring, performance optimizations, and the introduction of end-to-end testing during development cycles.
- Actively collaborated with product, business, and QA teams to translate requirements into reliable technical solutions and deliver features on time and in production.
- Contributed to the delivery of a robust SaaS platform currently used by multiple corporate clients across Spain, running in production environments.
- Worked on long-term products with continuous delivery and real production constraints.
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Education
- Multi-Platform Applications DevelopmentCentre d'Estudis Politècnics2019Multi-Platform Applications Development
- IT systems and networking Vocational Technical DiplomaCentre Ensenyaments Tècnics PenedèsIT systems and networking Vocational Technical Diploma