Frontend React Developer

Ailin.health; Madrid; Presencial; EUR 55.000 - 90.000; Jornada completa

Descripción de la vacante

Ailin.health is seeking a Mid–Senior Front-End Developer to join our engineering team and help build a new platform that will serve as the next generation of our product ecosystem.

You will design and implement the frontend architecture, build scalable UI foundations, and set quality standards as the product grows, influencing frontend structure, development patterns, and user experience across the platform.

Formación

• Strong professional experience building production frontend applications with React.
• Hands-on experience with Vite and modern frontend build workflows.
• Experience deploying and operating frontend apps with AWS Amplify.
• Deep understanding of JavaScript/TypeScript, HTML and CSS.
• Proven ability to build custom components and layouts from scratch without UI frameworks.
• Knowledge of CSS preprocessors such as LESS and/or SASS.
• Experience designing reusable component systems and maintaining large frontend codebases.
• Experience consuming REST APIs and managing complex async data flows.
• Understanding of authentication flows and secure frontend development patterns.
• High standards for code quality, performance and user experience.

Responsabilidades

• Design and implement frontend features using React, with Vite as the build tool.
• Own complex UI flows end-to-end, from technical design to production rollout.
• Define and evolve component architecture, state management and data-fetching strategies.
• Build and deploy frontend applications using AWS Amplify.
• Integrate frontend applications with APIs and authentication systems (e.g. Cognito).
• Ensure high standards for performance, accessibility and UX quality.
• Add robust error handling, logging and frontend observability.
• Collaborate closely with backend engineers to define API contracts and improve system boundaries.
• Review code and contribute to frontend technical decisions and best practices.
• Help shape frontend conventions and contribute to a shared engineering culture.

Conocimientos

React

Vite

AWS Amplify

JavaScript

TypeScript

HTML

CSS

LESS

SASS

REST APIs

Herramientas

Vite

AWS Amplify

Descripción del empleo

About This Role

We are looking for a

About This Role

We are looking for a Mid–Senior Front-End Developer to join our engineering team and help build a new platform that will serve as the next generation of our product ecosystem. You will play a key role in designing and implementing the frontend architecture of the platform, building scalable UI foundations and setting quality standards as the product grows. Your work will directly influence frontend structure, development patterns and user experience, becoming the baseline for future development at Ailin.

YOUR MISSION

• Design and implement frontend features using React, with Vite as the build tool
• Own complex UI flows end-to-end, from technical design to production rollout
• Define and evolve component architecture, state management and data-fetching strategies
• Build and deploy frontend applications using AWS Amplify
• Integrate frontend applications with APIs and authentication systems (e.g. Cognito)
• Ensure high standards for performance, accessibility and UX quality
• Add robust error handling, logging and frontend observability
• Collaborate closely with backend engineers to define API contracts and improve system boundaries
• Review code and contribute to frontend technical decisions and best practices
• Help shape frontend conventions and contribute to a shared engineering culture

What You Will Bring

• Strong professional experience building production applications with React
• Hands-on experience with Vite and modern frontend build workflows
• Experience deploying and operating frontend apps with AWS Amplify
• Deep understanding of JavaScript / TypeScript, HTML and CSS
• Proven ability to work without UI frameworks, building custom components and layouts from scratch
• Solid knowledge of CSS preprocessors such as LESS and/or SASS
• Experience designing reusable component systems and maintaining large frontend codebases
• Experience consuming REST APIs and managing complex async data flows
• Understanding of authentication flows and secure frontend development patterns
• High standards for code quality, performance and user experience
• An ownership mindset: you care about the product, not just the tickets