Front-End Developer

IntellectEU

Front-end Developer creating and maintaining web applications using React and Next.js at IntellectEU. Collaborating with QA engineers and architecture teams in a hybrid work environment.

Posted 4/17/2026contractMadrid • 🇪🇸 SpainMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

AWSAzureCloudCypressDockerJavaScriptJenkinsJestMicroservicesNext.jsReactTypeScript

About the role

Key responsibilities & impact

Develop and maintain web application features using React, Next.js, and modern JavaScript/TypeScript practices.
Design and implement automated test suites (unit, integration, and end-to-end) using Vitest and Playwright.
Collaborate with QA engineers to define testing strategies and improve overall test coverage.
Integrate testing processes into CI/CD pipelines for continuous delivery and deployment.
Analyze and troubleshoot defects, performance issues, and edge cases across environments.
Maintain documentation for testing frameworks, processes, and quality standards.
Work closely with product and architecture teams to ensure technical solutions meet functional and non-functional requirements.
Participate in sprint planning, code reviews, and retrospectives, contributing to a culture of quality and continuous improvement.

Requirements

What you’ll need

Must have Upper-Intermediate English level.
Master's/Bachelor's Degree in Computer Science.
3-5 years of related work experience.
Strong experience with React and Next.js.
Proficiency in TypeScript and modern JavaScript.
Hands-on experience with Vitest and other testing frameworks (e.g., Jest, Playwright, Cypress).
Experience with CI/CD tools (e.g., Jenkins).
Experience with Git.
Familiarity with performance testing and accessibility standards.
Understanding of microservices architecture and API testing.
Experience with containerization technologies like Docker.
Nice to have Experience with cloud platforms (e.g., AWS, Azure, Google Cloud).
Familiarity with Tailwind CSS and responsive design principles.
Knowledge of TDD/BDD.
Experience with Storybook for component testing and documentation.
Experience in financial services.

Benefits

Comp & perks

International experience in a stable company: the company has offices in Antwerp, Lisbon, Krakow, Kyiv, New York and operates on the market for over 15 years.
A passionate team in an innovative, casual, positive, and open work environment, ready to meet your new ideas.
Great opportunities for personal and professional development as well as the chance to change the way the business works in the financial world.

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

ReactNext.jsTypeScriptJavaScriptVitestPlaywrightCI/CDGitDockerTDD

Soft Skills

collaborationcommunicationproblem-solvinganalytical thinkingcontinuous improvementdocumentationplanningquality assurance

Certifications

Master's Degree in Computer ScienceBachelor's Degree in Computer Science