Senior Frontend (React)

Job Category:  Engineering

Industry:  SaaS/Ai

Required Stack: ReactJS, TypeScript, Material UI, FIGMA

Employer:  Stealth/Confidential

Location:  Brazil, Remote

Employment Type:  Contract Long-Term

 

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About the company

We are at the forefront of developing cutting-edge AI solutions, transforming data into actionable insights. Our text-heavy product leverages advanced machine-learning techniques to extract and process information at scale. We’re looking for a Senior Frontend React Developer who excels at both designing and building software users love to interact with.

 

Job Description

As a Senior Frontend React Developer, you will be responsible for leading the frontend design and development of our AI-driven chat interface. You’ll work closely with designers and backend engineers to create a seamless and engaging user experience. This role requires a deep understanding of React.js, JavaScript, Material UI, and design tools such as Figma or Adobe. You'll also be responsible for ensuring our platform is both visually appealing and functional, focusing on user interaction, UI/UX design, and responsive web development.

Key Responsibilities

  • Lead the development of the frontend for our AI chat-based product using React.js, JavaScript, and related libraries.
  • Implement UI components and design systems using Material UI, Styled Components, or similar frameworks.
  • Lead design to transform Figma mockups and prototypes into functional, scalable, and user-friendly interfaces.
  • Ensure responsive design and cross-browser compatibility for a seamless user experience across devices.
  • Optimize performance and improve the scalability of the frontend application.
  • Develop reusable and modular components for the AI chat platform.
  • Ensure integration with backend APIs, focusing on real-time data handling and interactions.
  • Use advanced JavaScript and modern libraries to build dynamic and interactive features.
  • Collaborate with product managers and backend developers to define and implement new features.
  • Take ownership of frontend architecture and ensure maintainability, security, and performance.

Required Skills

  • 5+ years of professional experience as a Frontend Developer with a strong focus on React.js.
  • Proficiency in JavaScript (ES6+), HTML5, and CSS3.
  • Hands-on experience with Material UI and design systems.
  • Strong design sense and experience working with UX/UI tools like Figma or Adobe.
  • Solid understanding of CSS-in-JS libraries (Styled Components, Emotion) and responsive design principles.
  • Experience with API integration, real-time data handling, and asynchronous programming using React hooks, Context API, Redux, or similar state management tools.
  • Familiarity with design tools and principles, with a good eye for UI/UX detail.
  • Knowledge of performance optimization techniques for large-scale applications.
  • Familiarity with version control systems like Git.

Preferred Qualifications

  • Experience working on AI-powered or chat-based applications.
  • Familiarity with WebSockets, GraphQL, or other real-time data libraries (Not a must but big plus)
  • Understanding of design thinking and user-centric design processes.
  • Familiarity with TypeScript for type safety in large-scale applications.

Soft Skills

  • Strong collaboration skills, with the ability to work closely with cross-functional teams.
  • Excellent problem-solving abilities, especially in a fast-paced, startup environment.
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Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities

The contractor will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor’s legal duty to furnish information. 41 CFR 60-1.35(c)