React Developer

Neostella
Municipality of Madrid, Spain
11 days ago

Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Working hours
Regular working hours
Languages
English
Experience level
Intermediate

Job location

Municipality of Madrid, Spain

Tech stack

HTML
JavaScript
API
Amazon Web Services (AWS)
JIRA
CSS
Cloud Computing
Software Quality
Code Review
Software Debugging
Github
Design of User Interfaces
Integrated Development Environments
Object-Oriented Software Development
Performance Tuning
Responsive Web Design
Software Engineering
TypeScript
Web Applications
Website Wireframe
React
Pixel Perfect
Material Design
Integration Tests
Sentry
Figma
Front End Software Development
React

Job description

The ideal candidate will be responsible for designing, developing, testing, and debugging responsive web applications for the company. Using React Js, JavaScript, HTML, and CSS, this candidate will be able to translate user and business needs into functional frontend design. The growth potential and opportunities here are endless and we want you to be a part of our journey. Curious what your day would look like as a React Developer? Check out the details below! Key Responsibilities

  • Develop high-quality, maintainable code and features within defined timelines, adhering to established coding standards and best practices.
  • Collaborate with fellow developers to conduct integration testing, ensuring functionality and consistency across the development environment before advancing code to QA.
  • Design, build, and test responsive user interfaces for web applications that meet user and business requirements.
  • Translate Figma designs, wireframes, and technical documentation into functional, pixel-perfect frontend components.
  • Build reusable components and libraries for future use to drive efficiency and maintainability.
  • Participate in code reviews and provide constructive feedback to peers to ensure code quality and knowledge sharing.
  • Create and maintain technical documentation as assigned by the Technical Lead to support continuity, onboarding, and scalability.
  • Stay up to date on UI/UX trends, performance optimization techniques, and evolving best practices in frontend development.

Requirements

  • 2+ years of professional experience in frontend software development. Strong experience with React (especially with hooks) and JavaScript.

  • Proficiency in TypeScript, or strong desire and ability to learn it quickly.

  • Solid understanding of HTML, CSS, and modern responsive web design principles.

  • Familiarity with Material UI or similar component libraries.

  • Basic knowledge of state management approaches (e.g., Context API, Redux) and frontend performance optimization.

  • Understanding of object-oriented programming principles.

  • Exposure to or experience working in Agile/Scrum environments.

  • Proficient in written and spoken English (CEFR C1 or equivalent).

  • Excellent collaboration and communication skills; ability to work effectively across teams and functions.

Technical Environment

  • Languages & Frameworks: JavaScript, TypeScript, React, Material UI
  • Tools: GitHub, Jira, Sentry
  • Cloud: AWS Amplify

About the company

At Neostella, our mission is simple: empower legal teams to work smarter, faster, and more reliably. We deliver advanced technology solutions and satellite team support that streamline operations, boost efficiency, and transform the way firms and corporate legal departments work day to day. We're relentlessly customer-centric. Everything we do is in service of making our clients' work easier and helping them deliver better experiences to their clients. We're also a true team: supportive, scrappy, and always in it together. We believe in showing up for one another, rolling up our sleeves, and celebrating the wins. It's who we are, and it's how we help our customers succeed. Neostella is in hyper-growth mode, leveraging cutting-edge technology to solve real challenges for our clients. And we're looking for driven, people-first professionals to help us scale with purpose and heart. As we continue to expand, we are seeking a React Developer to join our team!

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