Senior Front End Developer [Remote - Based in Spain]

ActioGlobal; Madrid; A distancia; EUR 32.000 - 52.000; Jornada completa

Descripción de la vacante

ActioGlobal is seeking a motivated frontend developer to help modernize our internal platform. You will work under senior developers to build a high-quality UI using Lit and Web Components, migrating features from the legacy system, and implementing new functionality where needed.

We value a clean-code mindset, a strong attention to UX, and the desire to grow in modern frontend architectures. Expect mentorship, code reviews, and collaborative product discussions in a fast-paced boutique agency.

Formación

• Graduate in Computer Science, Web Development, or intensive frontend bootcamp.
• Solid grasp of JavaScript (ES6+), HTML5, CSS3, and JS bundlers.
• Growth mindset with proactive feedback and code reviews.
• Attention to pixel-perfect design and UX.
• Git basics: clone, commit, push, pull.
• Spanish: proficient to work; English: read docs and communicate.
• UNIX / Bash fundamentals and terminal fluency.

Responsabilidades

• Active Learning and mentoring to master the stack (Lit, Web Components, modern JS).
• Component Development: Build reusable UI components from UX/UI designs and standards.
• Legacy Migration: Help migrate features to the new Web Components architecture.
• Code Quality: Write clean JavaScript (ESNext) following best practices.
• Automated Testing: Help create unit and integration tests for the frontend.
• Documentation: Keep the Storybook component library up to date.
• Bug Fixing: Identify and fix visual or logic issues under supervision.
• Collaboration: Participate in dailies and refinements with the team.

Conocimientos

JavaScript ES6+

HTML5

CSS3 (Flex/Grid)

Web Components

Lit

JS Bundlers

Git

Unix Bash

Spanish

English docs

Educación

Graduate in Computer Science or related field

Herramientas

Lit

Storybook

Webpack / Vite

Descripción del empleo

Who are we?

ActioGlobal is the agency that transforms leading organizations all over the world to shape the future of work. Since 2004, we partner with top leaders in their industries to disrupt organizational cultures and achieve high impact at accelerating speed, such as Pepsico, Unilever, Nestlé, Danone, Siemens, BASF, Adevinta, Canon, etc.

We don't consult. We Change How Work Is Done.

Our clients are not looking for fluffy workshops, endless post-it notes, or trendy methodologies, they want a new way of working that delivers results. Without excuses.

The Role

Your mission is to soak up knowledge and actively contribute to modernizing our internally developed platform. Guided by our Senior Devs, you'll help build modern UI using Lit and Web Components, migrating features from our legacy system to ensure a seamless, high-quality interface, while also implementing new and exciting features where required.

We’re looking for a clean-code enthusiast eager to become an expert in modern frontend architectures.

Active Learning: Jump into internal training and mentoring to master our stack (Lit, Web Components, modern JS).

Component Development: Build reusable UI components based on UX/UI designs and team standards.

Legacy Migration: Support the transition from old features to our new Web Components architecture.

Code Quality: Write clean JavaScript (ESNext) following industry best practices.

Automated Testing: Learn and help create unit and integration tests for a robust frontend.

Documentation: Keep our component library (Storybook) up to date.

Bug Fixing: Identify and fix visual or logic issues under supervision.

Collaboration: Be an active part of dailies and refinements, bringing a fresh perspective to technical talks.

Who you are

Ggraduate (Computer Science), Web Development vocational training, or a high-intensity Frontend Bootcamp.

Core Tech: Solid grasp of JavaScript (ES6+), HTML5, and CSS3 (Flexbox/Grid), and JS Bundlers.

Growth Mindset: Proactive, curious, and open to constructive feedback (code reviews).

Attention to Detail: A passion for pixel-perfect design and great UX.

Git: Basic version control skills (clone, commit, push, pull).

Spanish: proficient to work

English: Good enough to read technical docs and communicate internally.

UNIX / Bash Fundamentals: You need to be comfortable using the terminal. Whether you use WSL, Mac, or Linux, you should know your way around basic commands.

Bonus Points

• Experience with modern frameworks (React, Vue, or Angular).

• Experience with Lit or a solid understanding of Web Components.

• Experience implementing software architecture patterns.

• Personal GitHub projects that show off clean, organized code.

• Knowledge of TypeScript, Figma, or Web Accessibility (WCAG).

• Knowledge of Test Driven Development principles.

What's in it for you?

You aren't here to be a spectator. You'll be part of a high-performance team with a genuine hunger for learning.

Accelerate your career in a boutique agency with global impact, work with cutting-edge tech, and get direct mentoring from a top-tier team.

Immerse yourself in cutting-edge tech that is disrupting how companies like PepsiCo, Danone, and Unilever work.

Direct mentoring and constant support from a world-class team.