Frontend Developer | JavaScript | Microfrontends | Remote Spain

The White Team; United States; Remote; USD 37,000 - 39,000; Full time

Benefits offered by this job

23 days vacation

14 payments

Childcare vouchers

Medical + dental insurance

Job summary

THEWHITEAM Consulting seeks experienced Frontend Developers to join a technology project focused on modern web development, frontend architecture, and software quality. You will work with JavaScript, HTML, CSS, and testing tools to build reliable, accessible web applications and maintain high-quality code.

Responsibilities include implementing microfrontend architectures, robust testing (Karma/Chai/Sinon/Jasmine/Mocha, WebdriverIO/Selenium/Playwright), and integrating with backend systems via

Qualifications

• 5+ years frontend development experience required.
• Strong knowledge of JavaScript, HTML and CSS.
• Experience with unit and component testing tools.
• Experience with integration and end-to-end testing.
• Knowledge of JSON, REST APIs and web services.
• Experience with frontend package and build tools such as Yarn, NPM and Bower.
• Experience with Git and version control workflows.
• Knowledge of Rollup, Webpack and Node.js-based CLI tools.
• Familiarity with frontend design patterns and architecture.
• Experience with microfrontend strategies.
• Experience with at least one frontend framework or library: Angular, React, Vue, Polymer or Lit.
• English: Advanced (C1); Spanish: Professional working proficiency.

Responsibilities

• Develop and maintain web applications using JavaScript (ES5/ES6), HTML and CSS.
• Implement robust, reusable frontend components.
• Apply frontend design patterns and architectural best practices.
• Contribute to microfrontend architectures.
• Develop and maintain unit and component tests with Karma, Chai, Sinon, Jasmine and Mocha.
• Implement integration, end-to-end, visual and accessibility tests with WebdriverIO, Selenium and Playwright.
• Work with JSON, REST APIs and web services to connect frontend with backend systems.
• Configure and maintain frontend tools like Yarn, NPM, Bower, Rollup and Webpack.
• Use Git and support CI processes to improve code quality and reliability.
• Identify and resolve frontend issues related to functionality, performance, and accessibility.
• Collaborate with other developers and stakeholders to deliver high-quality software.

Skills

JavaScript

HTML

CSS

Testing tools

Frontend patterns

Microfrontends

REST APIs

Git

Webpack

Frameworks

English

Tools

Karma

Chai

Sinon

Jasmine

Mocha

WebdriverIO

Selenium

Playwright

Yarn

NPM

Job description

Job Description

At THEWHITEAM Consulting, we are looking for Frontend Developers to join a technology project focused on modern web development, frontend architecture and software quality.

The ideal candidates will have solid experience with JavaScript, HTML, CSS, automated testing and frontend design patterns, together with knowledge of microfrontend strategies and modern development tooling.

You will contribute to building reliable, accessible and maintainable web applications, ensuring high-quality code through comprehensive testing practices and continuous integration.

Responsibilities

• Develop and maintain web applications using JavaScript (ES5/ES6), HTML and CSS.

• Implement robust, reusable and maintainable frontend components.

• Apply frontend design patterns and architectural best practices.

• Contribute to the design and implementation of microfrontend architectures.

• Develop and maintain unit and component tests using tools such as Karma, Chai, Sinon, Jasmine and Mocha.

• Implement integration, end-to-end, visual and accessibility tests using tools such as WebdriverIO, Selenium and Playwright.

• Work with JSON, REST APIs and web services to integrate frontend applications with backend systems.

• Configure and maintain frontend development and build tools, including Yarn, NPM, Bower, Rollup and Webpack.

• Use Git for version control and collaborative development.

• Support continuous integration processes and contribute to code quality and reliability.

• Identify, troubleshoot and resolve frontend issues related to functionality, performance and accessibility.

• Collaborate with other developers and technical stakeholders to deliver high-quality software.

Requirements

• 5+ years of experience in frontend development.

• Strong knowledge of JavaScript (ES5/ES6).

• Extensive experience with HTML and CSS.

• Experience with unit and component testing tools such as Karma, Chai, Sinon, Jasmine or Mocha.

• Experience with integration and end-to-end testing using WebdriverIO or Selenium.

• Experience with visual testing using Playwright and accessibility testing practices.

• Knowledge of JSON, REST APIs and web services.

• Experience configuring and using frontend package and build tools such as Yarn, NPM and Bower.

• Experience with Git and version control workflows.

• Knowledge of Rollup, Webpack and Node.js-based command-line tools.

• Strong understanding of frontend design patterns and architecture.

• Experience with microfrontend strategies.

• Experience with at least one frontend framework or library: Angular, React, Vue, Polymer or Lit.

• Familiarity with testing best practices and software development standards.

• English: Advanced level (C1).

• Spanish: Professional working proficiency.

Nice to Have

• Experience with contract testing.

• Knowledge of Java and the Spring Framework.

• Experience with TypeScript.

• Familiarity with Azure DevOps.

• Knowledge of Docker and secure exposure of REST services.

• Experience with Test-Driven Development (TDD).

• Experience working with agile development teams.

• Strong verbal communication skills in English.

Technical Assessment

The recruitment process includes a technical pre-check to assess the candidate's technical experience and suitability for the role.

Conditions

• Location: Spain.

• Work model: 100% remote.

• Working hours: 09:00 - 18:00.

• Estimated project duration: 12 months.

• Experience: 5+ years.

• Salary: €33,000 - €35,000 gross annual salary.

• Positions available: 3.

Candidates must have valid authorization to work in their country of residence before starting the engagement.

Company

Joining THEWHITEAM means becoming part of a company made up of professionals with extensive experience in technology consulting.

We firmly believe that companies and clients set the direction of the industry, but people are the ones who build it. We consider our people our greatest asset and a key part of the value we provide.

Benefits

• Our collective agreement is the one applicable to consulting and market research companies.

• 23 days of vacation per year.

• 14 payments, including 12 monthly payments and two additional payments in June and December.

• Flexible compensation options including childcare vouchers and medical + dental insurance.