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Frontend Developer specialized in React, TypeScript and JavaScript (ES6+), with experience building production web interfaces such as multi-step forms, data visualization and responsive applications. Co-founder and developer of a healthcare SaaS, responsible for the user interface. Full stack profile that can align UI decisions with APIs and the data model, working on reusable component architectures, state management, routing and REST API consumption. Advanced English (C1) and focused on contributing to product teams while continuously growing technically.…Frontend Developer specialized in React, TypeScript and JavaScript (ES6+), with experience building production web interfaces such as multi-step forms, data visualization and responsive applications. Co-founder and developer of a healthcare SaaS, responsible for the user interface. Full stack profile that can align UI decisions with APIs and the data model, working on reusable component architectures, state management, routing and REST API consumption. Advanced English (C1) and focused on contributing to product teams while continuously growing technically.

Juan Martin Rios

Front-End Developer, Full Stack Developer, Web Developer, +2

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Frontend Developer specialized in React, TypeScript and JavaScript (ES6+), with experience building production web interfaces such as multi-step forms, data visualization and responsive applications. Co-founder and developer of a healthcare SaaS, responsible for the user interface. Full stack profile that can align UI decisions with APIs and the data model, working on reusable component architectures, state management, routing and REST API consumption. Advanced English (C1) and focused on contributing to product teams while continuously growing technically.…Frontend Developer specialized in React, TypeScript and JavaScript (ES6+), with experience building production web interfaces such as multi-step forms, data visualization and responsive applications. Co-founder and developer of a healthcare SaaS, responsible for the user interface. Full stack profile that can align UI decisions with APIs and the data model, working on reusable component architectures, state management, routing and REST API consumption. Advanced English (C1) and focused on contributing to product teams while continuously growing technically.

Available to hire

Frontend Developer specialized in React, TypeScript and JavaScript (ES6+), with experience building production web interfaces such as multi-step forms, data visualization and responsive applications. Co-founder and developer of a healthcare SaaS, responsible for the user interface.

Full stack profile that can align UI decisions with APIs and the data model, working on reusable component architectures, state management, routing and REST API consumption. Advanced English (C1) and focused on contributing to product teams while continuously growing technically.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Spanish; Castilian

Fluent

English

Advanced

Portuguese

Intermediate

Work Experience

Co-Founder & Frontend / Full Stack Developer at Dentiqly

January 1, 2026 - Present

Co-founded and developed Dentiqly, a management SaaS for dental practices, owning the product user interface. Built the application in React with TypeScript, implementing reusable component architecture, state management, routing and REST API consumption. Designed complex multi-entity forms (patients, appointments, medical records) with client-side validation plus loading and error states to provide clear user feedback. Developed responsive and accessible interfaces for healthcare professionals, ensuring visual consistency and usability. Collaborated on REST API and PostgreSQL data model design to match the real UI needs.

Frontend / Full Stack Web Developer at La Cocina de las Marcas

June 1, 2025 - February 1, 2026

Worked as part of a two-developer team on a brand-diagnosis web application built around an interactive questionnaire and a diamond-shaped results visualization. Implemented the multi-step questionnaire in React, including navigation between sections, progress persistence, validations and state management for the full form. Developed the diamond visualization to dynamically render scores across branding and naming dimensions. Focused on UX for a non-technical audience with responsive design, clear visual hierarchy and step-by-step feedback. Consumed and integrated backend REST APIs (Node.js/Express) and collaborated on their contract design.

Freelance Web Developer at Independent clients

January 1, 2023 - Present

Developed and implemented e-commerce sites and custom web solutions for clients across different industries. Built responsive interfaces using HTML, CSS and JavaScript based on original designs or Figma files. Delivered frontend features on WordPress/WooCommerce, including template modifications, interactive forms and custom components. Optimized shopping experience and usability based on client feedback. Integrated third-party APIs from the client side and consumed dynamic data.