Senior Frontend Developer

JavaScript

Senior Frontend Developer

JavaScript
Centrum, Lisbon

emagine Polska

Full-time
Any
Senior
Remote

Job description

Summary

We are seeking a Senior Frontend Developer to design and evolve performant, accessible web interfaces within a collaborative product team. The ideal candidate will possess a strong command of both React/Next.js and Vue/Nuxt ecosystems, ensuring high-quality solutions in complex projects.

Main Responsibilities

  • Build, test, and maintain user interfaces across two ecosystems: React/Next.js and Vue/Nuxt.

  • Design and implement interfaces directly, making autonomous UI/UX decisions from product needs (no dedicated designer).

  • Ensure performance (Core Web Vitals), accessibility (WCAG), and code quality.

  • Work closely with back-end and product teams to define the best technical solutions.

  • Participate in code reviews, share best practices, and mentor junior developers.

  • Contribute to frontend architecture and key technical decisions.

Key Requirements

  • 5+ years of frontend development experience.

  • Strong command of both React/Next.js and Vue/Nuxt (both required).

  • Excellent command of JavaScript/TypeScript, semantic HTML, and modern CSS (Tailwind, CSS-in-JS or equivalent).

  • Strong UI/UX sensibility: able to design clear, polished interfaces without supplied mockups.

  • Solid understanding of server-side rendering (SSR/SSG) and performance concerns.

  • Experience with unit and/or E2E testing (Vitest, Jest, Playwright, Cypress, etc.).

  • Comfortable with Git, continuous integration, and working in an agile environment.

  • Excellent written communication skills essential in a remote setting.

  • Fluent English required (spoken and written); French is a plus.

Nice to Have

  • Strong grasp of design principles (visual hierarchy, typography, spacing) and tools like Figma for rapid prototyping.

  • Experience with a design system/shared component library.

  • Some back-end knowledge (Node.js, REST/GraphQL APIs).

Other Details

  • Position Type: 100% Remote

  • Working Hours: Well-defined

Tech stack

    English

    C1

    typography

    advanced

    frontend

    advanced

    User Experience (UX)

    advanced

    Git

    advanced

    JavaScript

    advanced

    HTML

    advanced

    CSS

    advanced

    Testing

    advanced

    REST

    advanced

    Agile

    advanced

Office location

Senior Frontend Developer

Summary of the offer

Senior Frontend Developer

Centrum, Lisbon
emagine Polska
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