Valtech

Front-End Developer – Web/Mobile

Valtech

full-time

Posted on:

Location Type: Remote

Location: Remote • 🇧🇷 Brazil

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Job Level

Mid-LevelSenior

Tech Stack

AndroidFirebaseGraphQLGRPCiOSJavaJavaScriptKotlinObjective-CReactReact NativeReduxSwift

About the role

  • Design and develop web applications using React.js and mobile applications with React Native
  • Optimize and maintain codebases to ensure performance and reliability
  • Integrate RESTful APIs, gRPC, GraphQL, Firebase and various third-party libraries
  • Build robust solutions for offline functionality and local data persistence
  • Apply best practices for coding, testing and performance optimization
  • Work closely with UI/UX teams to turn design prototypes into responsive, polished and user-friendly interfaces
  • Stay up to date with the latest trends and developments in the React ecosystem and mobile development

Requirements

  • Advanced English
  • Professional experience in web and mobile application development
  • Hands-on experience with React.js and React Native
  • Strong understanding of React architecture, including state management (Redux, Context API), components and hooks
  • Solid knowledge of performance optimization, memory management and debugging techniques for web and mobile applications
  • Familiarity with native Android (Kotlin/Java) or iOS (Swift/Objective-C) development is a plus
  • Experience with Firebase for analytics, crash reporting and app distribution
  • Full understanding of the App Store and Google Play Store publication processes
  • Experience with CI/CD pipelines for web and mobile applications
  • Good knowledge of version control systems, branching strategies and collaborative workflows
  • Strong understanding of security best practices, including data encryption and secure storage
  • Degree in Computer Science, Engineering or related fields
Benefits
  • Health insurance
  • Flexible benefits card
  • Language programs
  • Total Pass
  • Relaxed work environment
  • Flexible working hours
  • Significant investment in career development

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard skills
React.jsReact NativeRESTful APIsgRPCGraphQLFirebaseReduxContext APICI/CDperformance optimization
Soft skills
advanced Englishcollaborative workflowsstrong understanding of security best practices
Certifications
degree in Computer Sciencedegree in Engineering
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