Senior Frontend Developer

Initium Software·Madrid, Spain

The employer limits where this remote role can be done: Modalidad 100% remota dentro de España

What they offer

  • Full-time hours

    Per the ad.

  • Fully remote

    Modalidad 100% remota dentro de España

What they ask for

  • Have the right to work in Spain

    Initium Software doesn't mention sponsorship in the ad.

  • Work in English

    English is required, per the ad.

  • Have 5+ years of experience

    Senior-level role.

Pulled from the advert automatically — the full ad is what counts.

Added 13 days ago
Read the full advert

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.

This job was automatically translated to English, .

About the company

Initium Software

Initium Software

Company

View company profile
Spanish company
500 employees