Senior Front-End Developer en Sigma Software

Remoto - Latin America

We are seeking a highly skilled Front‑end Developer with JavaScript, TypeScript, ReactJS and Next.js expertise to join our dynamic team at Sigma Software. The candidate will build and maintain modern web applications, collaborate with back‑end developers and designers, and contribute to a customer‑focused platform for a leading pet products marketplace.

Requirements

Experience

5+ years of experience in Front-end development with ReactJS
Strong understanding of JavaScript (ES6+), TypeScript, Next.js, HTML5, and CSS3
Hands‑on experience with GraphQL (Apollo Client or similar)
Familiarity with React Hooks, Context API, and Redux (optional)
Experience with RESTful APIs and third‑party integrations
Understanding of component‑based architecture and state management
Knowledge of performance optimization and debugging techniques
At least a C1 level of English

Skills

JavaScript
TypeScript
ReactJS
Next.js
GraphQL
Apollo Client
RESTful APIs
React Hooks
Context API
Redux
HTML5
CSS3
Performance optimization
Debugging
Clean code practices
Responsive UI design
Collaboration
Communication
Analytical thinking
Problem solving

Languages

English

Responsibilities

Develop and maintain web applications using ReactJS and GraphQL
Collaborate with designers and Back‑end developers to build scalable, high‑performance applications
Write clean, maintainable, and efficient code following best engineering practices
Implement responsive and user‑friendly UI components
Optimize applications for performance and scalability
Debug and troubleshoot issues across multiple browsers and devices
Participate in code reviews and contribute to team knowledge sharing

Technologies

JavaScriptTypeScriptReactJSNext.jsGraphQLApollo ClientRESTful APIsReact HooksContext APIReduxHTML5CSS3

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