Mid Front End Developer

NTT DATA, Inc.; Castilla-La Mancha; On-site; EUR 32,000 - 52,000; Full time

Job summary

NTT DATA, Inc. is seeking a Mid-Level Frontend Developer to join a collaborative engineering team in Spain. You will build reusable React + TypeScript components, work with MUI, and contribute to design-system‑like projects.

You will participate in code reviews, write tests with Jest/RTL, and follow accessibility and performance standards while translating designs from Figma into front-end deliverables.

Qualifications

• 2-4 years of professional software development experience.
• Proficient in React and TypeScript.
• Experience with MUI or similar CSS-in-JS/theming.
• Collaborative work in a shared codebase with Git and code reviews.
• Automated testing with Jest and/or React Testing Library.

Responsibilities

• Build and maintain reusable, accessible React + MUI components, patterns, themes, and utilities.
• Write and maintain TypeScript component APIs following PRIME's conventions.
• Fix bugs, extend existing components, and implement new components from design specs (Figma) with guidance.
• Write and maintain automated tests (unit, integration, visual regression) for shared components.
• Participate in code reviews and follow accessibility, performance, versioning, and documentation standards.

Skills

React.js

TypeScript

MUI

CSS-in-JS

Git workflows

Jest

React Testing Library

Code review

Accessibility

Storybook

Tools

Figma

Job description

Mid-Level Frontend Developer

Experience: 2-4 years professional software development experience

Responsibilities

• Build and maintain reusable, accessible React + MUI components, patterns, themes, and utilities.
• Write and maintain TypeScript component APIs following PRIME's existing conventions.
• Fix bugs, extend existing components, and implement new components from design specs (Figma), with guidance from the Tech Lead and senior engineers.
• Write and maintain automated tests (unit, integration, visual regression) for shared components.
• Participate in code review and follow established engineering standards for accessibility, performance, versioning, and documentation.

Required Skillset / Tech Stack

• React.js in production: 2+ years.
• TypeScript, has authored typed component props/interfaces, not just consumed existing types.
• MUI (Material UI) production experience. Equivalent CSS-in-JS/theming experience (styled-components, Emotion, Chakra) considered in place of MUI.
• Has worked in a shared codebase with multiple contributing teams, using Git-based workflow and regular code review.
• Automated testing experience with Jest and/or React Testing Library.

Nice-to-haves

• Accessibility experience (semantic HTML, ARIA, WCAG).
• Storybook, component documentation and/or visual regression testing.
• Angular experience.
• CI/CD, npm package publishing, private registry experience.
• Figma-to-code workflows.
• Prior work on an internal platform or shared library rather than only product/feature teams.

What a strong CV looks like

Prioritize resumes showing design system, component library, or shared UI platform work, with keywords like: React, TypeScript, MUI/Material UI, Storybook, design tokens, WCAG/accessibility. Product/feature-only React experience is acceptable for this level.