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Senior Frontend Developer en Madrid, España - Jobeax

Senior Frontend Developer en Madrid, España is listed on Jobeax. Browse 80,000+ vacancies available.

About the role

This is a remote position.

At Initium Software, we connect the best technical talent with the most innovative and challenging projects on the market. We are not a traditional consultancy; we are strategic partners who believe in real impact through technology. We are looking for a Senior Frontend Developer to lead the implementation of modern, robust, and scalable frontend architectures in a high-performance international environment.

What you'll do

Design and build scalable frontend applications by applying advanced architecture patterns and microfrontend strategies.
Ensure maximum software quality by defining and executing unit, integration, E2E, visual, and accessibility tests.
Optimize bundling, dependency, and build tooling workflows using Webpack, Rollup, and Node CLIs.
Collaborate closely with multidisciplinary and international teams, ensuring best practices in development and continuous delivery.
Drive continuous technical improvement and code excellence within an agile environment.

What we're looking for

More than 5 years of solid experience in frontend development with advanced JavaScript (ES5/ES6), HTML5, and CSS3.
Proven experience in frontend design patterns and architectures based on microfrontends.
Proficiency in unit and component testing (Karma, Jasmine, Mocha, Chai, Sinon) as well as E2E and visual testing (Playwright, Selenium, WebdriverIO).
Advanced handling of integration, package management, and bundling tools (Yarn, NPM, Rollup, Webpack).
Version control with Git and consumption of REST / JSON APIs.
Advanced English level (C1), with fluent technical and professional communication skills.
Residence in Spain and a valid work permit.

Nice to have

Experience with TypeScript and modern frontend frameworks (Angular, ReactJS, Vue, or Lit-Element/Polymer).
Knowledge of Azure DevOps, Docker, or backend fundamentals with Java/Spring.
Hands-on experience with TDD (Test Driven Development) and Contract Testing.
Are passionate about learning, sharing ideas, and growing together with the team.

What you'll get

Competitive salary range: commensurate with experience and skills.
100% remote work within Spain with flexible hours (standard working day from 09:00 to 18:00).
Challenging large-scale projects with global visibility and real technical impact.
A culture based on transparency, autonomy, technical excellence, and continuous growth.

At Initium, we don't just develop technology: we create an environment where people can grow, add value, and leave their mark.

Apply now and let's talk.

HOW WILL WE MEASURE YOUR IMPACT?

Achieving monthly project efficiency goals.
Aligning with and effectively executing the strategic plan.

About the role

Este es un puesto de trabajo remoto.

En Initium Software conectamos al mejor talento técnico con los proyectos más desafiantes e innovadores del mercado. No somos una consultora tradicional; somos socios estratégicos que creemos en el impacto real a través de la tecnología. Buscamos un Senior Frontend Developer para liderar la implementación de arquitecturas frontend modernas, robustas y escalables en un entorno internacional de alto rendimiento.

What you'll do

Diseñar y construir aplicaciones frontend escalables aplicando patrones de arquitectura avanzados y estrategias de microfrontends.
Garantizar la máxima calidad del software mediante la definición y ejecución de pruebas unitarias, de integración, E2E, visuales y de accesibilidad.
Optimizar flujos de empaquetado, dependencias y herramientas de construcción con Webpack, Rollup y Node CLIs.
Colaborar estrechamente con equipos multidisciplinares e internacionales, asegurando las mejores prácticas de desarrollo y entregas continuas.
Impulsar la mejora técnica continua y la excelencia en el código dentro de un entorno ágil.

What we're looking for

Más de 5 años de experiencia sólida en desarrollo frontend con JavaScript avanzado (ES5/ES6), HTML5 y CSS3.
Experiencia contrastada en diseño de patrones frontend y arquitecturas basadas en microfrontends.
Dominio de pruebas unitarias y de componentes (Karma, Jasmine, Mocha, Chai, Sinon) así como testing E2E y visual (Playwright, Selenium, WebdriverIO).
Manejo avanzado de herramientas de integración, gestión de paquetes y empaquetado (Yarn, NPM, Rollup, Webpack).
Control de versiones con Git y consumo de APIs REST / JSON.
Nivel de inglés avanzado (C1), con capacidad fluida de comunicación técnica y profesional.
Residencia en España y permiso de trabajo vigente.

Nice to have

Cuentas con experiencia en TypeScript y frameworks frontend modernos (Angular, ReactJS, Vue o Lit-Element/Polymer).
Tienes conocimientos en Azure DevOps, Docker o fundamentos de backend con Java/Spring.
Posees experiencia práctica con TDD (Test Driven Development) y Contract Testing.
Te apasiona aprender, compartir ideas y evolucionar junto al equipo.

What you'll get

Rango salarial competitivo: acorde a experiencia y competencias aportadas.
Modalidad 100% remota dentro de España con flexibilidad horaria (jornada habitual de 09:00 a 18:00).
Proyectos retadores a gran escala con visibilidad global e impacto técnico real.
Cultura basada en la transparencia, la autonomía, la excelencia técnica y el crecimiento continuo.

En Initium no solo desarrollamos tecnología: creamos un entorno donde las personas pueden evolucionar, aportar valor y dejar huella.

Aplica ahora y hablemos.

¿CÓMO MEDIREMOS TU IMPACTO?

Cumplimiento mensual de objetivos de eficiencia de Proyectos.
Alineación y ejecución efectiva del plan estratégico.

This job was automatically translated to English, .

Postularse a la vacante

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