01/17/2026 updated
100 % available
Senior Frontend Engineer (React, Vue, Angular)
Valencia, Spain
Only remote
MSc PharmacyAbout me
Senior Frontend Engineer with 6+ years of experience building scalable web applications using React, Vue, and Angular. Strong focus on clean architecture, performance, and maintainable code. Experienced in international teams. EU-based, fully remote (CET).
Clean Code PrinciplesJavaScriptArchitectureHTML5Cascading Style Sheets (CSS)Code ReviewContinuous DeliveryContinuous IntegrationDigitizationUser Interface DesignHealth CarePostgreSQLMaintenanceMongoDBMySQL
Frontend Development
React, Vue.js, Angular, TypeScript, JavaScript (ES6+), HTML5, CSS3, Material UI, Angular Material, styled-components
Architecture & Quality
Frontend architecture, microfrontends, performance optimization, clean code, SOLID principles, code reviews
Testing & Tooling
Jest, Cypress, Playwright, SonarQube, Git, GitLab, Docker, CI/CD pipelines
Backend Collaboration
REST APIs, GraphQL, Node.js, Express.js, MySQL, PostgreSQL, MongoDB
UI Engineering
Design and development of complex, reusable UI components for enterprise-scale applications
Legacy System Modernization
Modernization of legacy frontend systems to React-based microfrontend architectures
Domain Experience
Healthcare and public-sector web applications, long-term product development and maintenance
Digital Transformation
Contribution to large-scale digital transformation initiatives with a focus on frontend modernization
Experience
Professional experience0 - 5 years
Freelancer since2026
Languages
GermanFluentEnglishNative speakerFrenchGoodRussianFluentSpanishFluent
Project history
Contributing to a long-term digital transformation project for a German public-sector client. Developing and maintaining Vue.js and TypeScript features in a shared, long-lived codebase. Ensuring code quality, accessibility, and maintainability under regulatory constraints. Collaborating closely with backend engineers, QA, and product stakeholders.
Designed and developed complex UI components using React and Angular for enterprise applications. Maintained and evolved an Angular-based application for EMSA (European Maritime Safety Agency). Participated in the modernization of legacy systems to a React-based microfrontend architecture. Improved frontend performance and code quality through refactoring, testing, and reviews.
Developed and maintained healthcare web applications using React, Angular, and Node.js. Built reusable frontend components and collaborated closely with backend developers. Worked with non-technical stakeholders to translate requirements into reliable solutions.