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Q-tech

Frontend UI Developer – React, TypeScript

Q-tech

. Lead and build modern, responsive and maintainable interfaces with JavaScript, TypeScript, React, HTML and CSS .

Posted 9/30/2026full-timeMadrid • SpainMid-LevelSeniorWebsite

Core Competencies

Role fit
Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in building modern, responsive user interfaces using React, TypeScript, and JavaScript, while ensuring high standards in usability, performance, and accessibility. Proven ability to collaborate effectively with cross-functional teams and lead UI development efforts.

Highest-signal resume keywords
React Application ArchitectureTypeScript DevelopmentJava/Spring Backend IntegrationAPI Design and IntegrationUI Component Design

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
JavaScriptTypeScriptReactHTMLCSSJavaSpring BootREST APIsAutomated TestingPerformance Optimization
Soft Skills
OwnershipCuriosityFocus on QualityDrive to Improve ProcessesMentoring
Tools & Technologies
GitCI/CDDesign SystemsComponent LibrariesAI Tools
Industry Keywords
Agile DeliveryUser-Friendly SolutionsComponent DesignUsabilityAccessibility

Tech Stack

Tools & technologies
JavaJavaScriptReactSpringSpring BootSpringBootTypeScript

About the role

Key responsibilities & impact
  • Lead and build modern, responsive and maintainable interfaces with JavaScript, TypeScript, React, HTML and CSS
  • Shape frontend architecture, component design, usability, performance, accessibility and application consistency
  • Collaborate with business analysts, product stakeholders, developers, testers and architects to turn complex requirements into user-friendly solutions
  • Work with the backend team on Java/Spring services, including API design, integration, troubleshooting and end-to-end validation
  • Build reusable UI components and patterns to speed delivery and improve quality
  • Participate in the full delivery lifecycle, including refinement, design, development, code reviews, testing, releases and post-release improvements
  • Act as technical owner of the UI area, guide decisions, support colleagues and raise engineering standards
  • Help build and shape a new strategic technology hub in Madrid

Requirements

What you’ll need
  • 5+ years of software development experience
  • Strong hands-on skills in React, TypeScript and JavaScript
  • Solid understanding of React application architecture, including component design, state management, routing, testing, performance optimization and maintainable code structure
  • Ability to build clean, intuitive interfaces for complex business applications
  • Experience connecting frontends to APIs, authentication flows, data models and asynchronous processes
  • Hands-on experience with Git, CI/CD, code reviews, automated testing, agile delivery and secure development
  • Experience using AI tools productively, with sound judgment and responsible use
  • Fluent English, written and spoken
  • Ownership, curiosity, focus on quality and drive to improve team processes
  • Backend experience with Java and Spring Boot, REST APIs, service integration and debugging
  • Experience with design systems or component libraries
  • Experience leading a UI workstream or mentoring other developers
  • German is a nice-to-have

Benefits

Comp & perks
  • A permanent, direct contract with the company
  • A competitive and open salary package, tailored to the right person
  • Hybrid working (3+2), with offices in central Madrid
  • Above-average holiday allowance
  • Gender-neutral parental leave
  • 100% reimbursement of childcare costs
  • Health, accident and life insurance
  • Paid training and certifications
  • An Employee Assistance Program for you and your family
  • The chance to help build a strategic hub from day one