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Senior Front End Developer

ActioGlobal


Job Location:

Madrid - Spain

Monthly Salary: Not provided by the employer
Posted: 6 October 2026 (2 days ago)
Application Deadline: 3 January 2027
Vacancies: 1 Vacancy

Job Summary

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 dont 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 youll 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.

Were 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.

Whats in it for you

You arent here to be a spectator. Youll 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.