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Frontend Developer, Mid / Sr.

Sundayy

full-remoteseniorpermanentfrontend United States 20 days ago via LinkedIn

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Tags

ReactJavaScriptWeb-GISOpenLayersCesiumMaterial-UIStyled ComponentsAxiosREST APIsGeoJSON

About the role

Role Overview

Mid–Senior Frontend Developer (Remote)

Join a team building a web-GIS platform that powers automated planning and visualization for energy, telecommunication, and transportation infrastructure. You will develop scalable front-end components and collaborate with the front-end lead and cross-functional teams to deliver new features and seamless backend integration.

Responsibilities

  • Implement new UI features and enhancements to improve user experience and functionality
  • Migrate legacy React class components to modern functional components using hooks
  • Refactor complex components to improve performance, maintainability, and clarity
  • Integrate frontend components with backend services (Django REST APIs)
  • Handle authentication and error states in the UI
  • Debug and resolve issues across the codebase, including production
  • Participate in code reviews and contribute constructive feedback
  • Maintain and contribute documentation for features, workflows, and architectural patterns
  • Support development of geospatial features using mapping libraries and geospatial data formats

Requirements

  • 4+ years of professional experience with React (v16+)
  • Strong modern JavaScript/ES6+ fundamentals (async/await, promises, modules, array methods)
  • Experience with React hooks (functional components) and migrating from class components
  • Ability to design and maintain custom hooks for reusable logic
  • Proficiency with React Context API and useReducer for state management
  • Linux development experience
  • Git-based workflows (GitHub/GitLab) and collaboration tools (e.g., Slack/Teams)
  • Comfortable with Agile development environments
  • UI/responsive design experience with Material-UI (MUI v4) and Styled Components
  • Integrating REST APIs using Axios (or similar)
  • Knowledge of build/code-quality tooling (Create React App or Webpack, ESLint, Prettier)
  • Strong communication, problem-solving, and proactive learning/collaboration

Nice-to-haves

  • GIS/mapping library experience: OpenLayers and/or Cesium
  • Geospatial concepts and formats: GeoJSON, Shapefiles, WMS/WFS
  • Authentication flows and internationalization (i18n) frameworks
  • Use of Django REST APIs in practice

Benefits

  • Opportunity to work on impactful, innovative projects in a growing company (benefit details are truncated in the provided text).

About Sundayy

Sundayy is described as a technology company pioneering 3D web-GIS applications for automated routing and infrastructure design. Its platform supports planning and management of power lines, pipelines, roads, and geospatial data visualization to improve efficiency and accuracy. The company focuses on innovation in digital infrastructure planning for global clients.

Scraped 7/5/2026