Senior Frontend Developer

SGS; Madrid; Híbrido; EUR 45.000 - 65.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Flexible schedule

Continuous learning opportunities

Collaborative multinational environment

Descripción de la vacante

SGS is seeking a Senior Frontend Developer to build high-quality, scalable, user-centric web applications. This role involves collaborating with product managers and designers to translate business requirements into efficient frontend solutions.

With a focus on frontend architecture, you'll optimize application performance, ensure cross-browser compatibility, and mentor other developers. Enjoy a flexible schedule in a hybrid work setting along with continuous learning opportunities through SGS University.

Formación

• 5+ years of experience developing modern frontend applications.
• Strong proficiency in JavaScript and TypeScript.
• Solid experience with at least one major framework: Vue, Angular, or React.
• Strong knowledge of HTML, CSS, and preprocessors like SCSS or LESS.

Responsabilidades

• Design, build, and maintain scalable frontend applications.
• Own and evolve frontend architecture for maintainability.
• Collaborate with UX/UI designers to ensure user experiences.
• Translate product requirements into efficient code.

Conocimientos

JavaScript

TypeScript

Vue

Angular

React

HTML

CSS

SCSS

LESS

REST APIs

GraphQL

Frontend performance optimization

Agile

Git

Descripción del empleo

Job Description

As a Senior Frontend Developer, you will play a key role in building high-quality, scalable, and user-centric web applications. You will take ownership of frontend architecture in collaboration with the UX/UI Technical Leader, ensuring a seamless and performant user experience across our products.

You will work closely with product managers, designers, and backend engineers to translate business requirements into elegant and efficient frontend solutions.

Responsibilities

• Design, build, and maintain scalable, high-performance frontend applications.
• Own and evolve frontend architecture, ensuring maintainability and scalability.
• Collaborate closely with UX/UI designers to deliver intuitive and visually consistent user experiences.
• Translate product and design requirements into clean, efficient, and reusable code.
• Promote best practices in frontend engineering (Clean Code, testing strategies, component design).
• Implement and maintain design systems and reusable component libraries.
• Optimize application performance (loading time, rendering, responsiveness).
• Ensure cross-browser compatibility and responsiveness across devices.
• Integrate frontend applications with REST APIs and/or GraphQL services.
• Contribute to CI/CD pipelines and improve frontend delivery workflows.
• Support and mentor other developers through code reviews and knowledge sharing.
• Contribute to technical documentation and ensure shared understanding across the team.

Qualifications

• 5+ years of experience developing modern frontend applications.
• Strong proficiency in JavaScript and TypeScript.
• Solid experience with at least one major framework: Vue, Angular, or React.
• Strong knowledge of HTML, CSS, and preprocessors (SCSS, LESS).
• Experience building scalable frontend architectures and component-based systems.
• Hands‑on experience integrating with REST APIs and/or GraphQL.
• Strong understanding of frontend performance optimization techniques.
• Experience with state management solutions (e.g., Vuex, Redux, NgRx, or similar).
• Familiarity with modern testing practices (unit, integration, end‑to‑end).
• Experience with Git and collaborative workflows.
• Experience working in Agile environments.
• Strong communication skills and fluency in English.

Preferred Skills

• Experience with design systems and UI component libraries.
• Knowledge of accessibility standards (WCAG) and best practices.
• Familiarity with SSR/SSG frameworks (e.g., Next.js, Nuxt).
• Experience with modern build tools (Vite, Webpack, etc.).
• Familiarity with cloud environments and frontend deployment strategies.
• Experience with CI/CD tools (Azure DevOps, GitHub Actions, etc.).
• Understanding of web security best practices (CORS, CSP, XSS prevention).
• Exposure to Domain-Driven Design (DDD) concepts.

Benefits

• Join a globally recognized and stable company, a leader in the Testing, Inspection, and Certification (TIC) industry.
• Enjoy a flexible schedule and a hybrid work model.
• Access continuous learning opportunities through SGS University and Campus.
• Collaborate in a multinational environment with colleagues from various continents.