Freelancer profile translated to English.
Back to original languageAbout Jordi
Hi, I'm Jordi. Senior fullstack engineer based in Tokyo, with 8 years of experience building web and AI products from start to finish — from idea and architecture to a fast, polished product that your users will enjoy.
Right now, I'm not only developing for clients: I'm also building my own consumer AI products (an AI companion app and an anime tracking app). So I know firsthand how to take a product from zero to real users, not just deliver code.
WHAT I DO FOR YOU:
- End-to-end product development (MVP → scale): architecture, UI/UX, frontend, backend, and cloud.
- AI Integrations: LLM features, image analysis (OpenAI Vision), automation, and recommendation.
- Performance and accessibility: optimized for speed and a great user experience.
- Scalable and cost-optimized AWS cloud architecture.
With over 30 applications developed from scratch throughout my career, I've probably already built what you need. Some success stories:
- yaencontre.com: page load speed optimization to 0.2s (top 3 in Google).
- teal-tech.works: scalable BI system that handles and visualizes millions of data points extracted from the cash registers of hundreds of restaurants.
- ep2as.com: AWS cloud infrastructure with high security and scalability requirements for a complex system (2 frontends + 3 backends).
TECHNOLOGIES: TypeScript / JavaScript, React, Next.js, Node.js, Nest.js, Python · PostgreSQL, MySQL, MongoDB, Redis, DynamoDB · AWS (Lambda, ECS, RDS, S3, etc.) · OpenAI API (LLM + Vision).
CREDENTIALS: AWS Certified Solutions Architect – Associate · JLPT N1 · based in Tokyo.
I place great importance on code quality and maintainability, so that each application offers the best user experience (speed, accessibility, security). Have you read this far? It means you're interested — get in touch and let's talk.
Japanese
Fluent
Catalan
Native or bilingual
Spanish
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- Gama Próxima SL
On Malt
Full-stack Developer and Project ManagementApril 2024 - February 2025 (10 months)Corbera de Llobregat, EspañaDuring this project, I was responsible, along with my agency Nyxidiom, for developing the entire e-commerce platform from scratch for selling sex dolls, completely customized and coded to measure (without templates or CMS). In addition to technical development, I also coordinated the search and supervision of key profiles such as designers, copywriters, and illustrators, ensuring the coherence and quality of the final result.The e-commerce includes all the essential pages for a complete sales funnel: lead generation landing page, product catalog, detail pages, cart and checkout, as well as user areas and an administration panel to manage products, orders, and the business in general. - NubelcoMVP Development of ERP for Order Management in 2 WeeksLOGISTICS AND SUPPLY CHAINMarch 2024 - March 2024Barcelona, SpainThe project involved an urgent development of an MVP for order management for a transport service, developed in just 2 weeks with React.The project was a collaboration with the internal team of Nubelco, where I was responsible for the design and complete development of all interfaces, as well as the integration with the backend.This included the following tasks:- Authentication screens- Order creation, editing, and listing screens- Order history screen- Order details screen- Integration with Odoo backend using the XMLRPC protocol.
- MiisticoDevelopment of Esoteric Services MarketplaceE-COMMERCEAugust 2023 - Today (2 years and 11 months)Barcelona, SpainThe project involved scaling the Wordpress portal of miistico.com, moving the Marketplace part for hiring professionals to the pro.miistico.com platform, developed with React. We developed the MVP from scratch in just 4 months.The project had been in development for 1 year by another team, but due to the current state of the project, we offered to start the development again to speed up the process and ensure a higher quality solution.Our development offers the following improvements compared to the previously developed Wordpress solution:- Considerable increase in sales, by having a more personalized and user-experience-optimized solution.- Significant improvement in the design initially provided by the client.- Excellent accessibility, with a perfect score on Lighthouse.- Considerable increase in page load speed; the initially provided development took 4 seconds to load, and we reduced it to 0.5 seconds.- Integration of a proprietary video call platform, to conduct online services directly within pro.miistico.com instead of external services like Google Meet.- Proprietary session booking system, avoiding external services like Calendly, also integrated with professionals' Google calendars.- Role-based authentication and authorization system, allowing different screens to be displayed to administrators, professionals, and users according to each profile's needs.- Deployment to production, with very low server maintenance costs and high scalability, incorporating backups and many other security measures.
Reviews
Victor
Gama Próxima SL
Reviewed on 3/14/2025
Jordi leads a group of developers committed to the final business outcome, in this case, e-commerce, seeking the best solutions as if it were their own business. Highly recommended, we will work with him again.
A
Alejandra
Nubelco Systems S.L.
Reviewed on 3/19/2024
Very professional and punctual. He adapted to all requirements and gave his utmost, providing excellent communication. He went above and beyond, even working on weekends to meet project deadlines, which were extended due to reasons beyond his control and also because it was his first integration with Odoo.
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Education
- Computer Engineering DegreeAutonomous University of Barcelona2018