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Mid-senior Frontend developer –
hace 3 semanas
Gilytics provides a 3D web-GIS application for automated routing and design of energy, telecommunication and transport infrastructure (power lines, pipelines, roads, analytics, data visualization, etc.) . Our ambition is to become the standard solution for automated design of telecommunication, energy and transportation infrastructure and to make the planning process more transparent, digital and democratic We are searching for (mid-)senior frontend developer with 4+ years of experience to support our existing team located in Spain. Requirements Education Bachelor’s degree or equivalent in Computer Science, Software Engineering, Information Technology, or related technical field. A Master’s degree is an advantage. Core React & general Front-End skills (Must-Have) 4+ years of professional experience with React (v16+). Strong proficiency with both class components and modern functional components using hooks. Experience migrating class-based components to functional patterns. Ability to design and maintain custom hooks for reusable logic. Solid experience with the React Context API + useReducer for state management. Ability to structure multiple context providers and optimize components to prevent unnecessary re-renders. Excellent ES6+ fundamentals, including async/await, promises, modules, array methods, and destructuring. Strong debugging, problem-solving, and code-organization skills. Familiarity with Git-based workflows (GitLab/GitHub) and collaboration tools (Teams, Slack, etc.). UI & Front-End Skills (Must have) Experience with Material-UI (MUI v4), including custom theming and component styling Strong knowledge of Styled Components. Solid understanding of responsive design and component-driven UI architecture. Experience working with Django REST Framework backends is a strong plus. Ability to manage data transformation, error handling, and robust API workflows. Experience handling files such as CSV, Excel, GeoJSON, and Shapefiles. OpenLayers and Cesium experience (our primary 2D mapping library). Understanding of geospatial concepts (Coordinate systems and projections, Vector vs raster data, Feature rendering and styling) Turf.js or similar geospatial analysis libraries. Experience with WMS/WFS services. If no GIS experience: you must have a strong willingness to learn geospatial concepts and work with mapping libraries. Additional Skills Experience with authentication flows (token-based auth, 2FA) Familiarity with error handling patterns and user feedback best practices Experience with internationalization frameworks (e.g., i18next) Knowledge of build tools such as Create React App or Webpack Understanding of code-quality tooling (ESLint, Prettier, pre-commit hooks) D3.js experience for interactive data visualization (nice to have) Coding Standards & Best Practices Write clean, maintainable, and well-structured code aligned with team conventions Apply component composition, reusability principles, and separation of concerns Follow accessibility (a11y) best practices Adhere to established guidelines for code formatting, commits, and project structure Mindset & Working Style Strong sense of ownership and ability to work independently on complex features Proactive problem-solving attitude and comfort navigating technical challenges Adaptable and eager to learn new technologies (including GIS concepts when needed) High attention to detail, especially when working on components used in critical infrastructure workflows Committed to continuous learning and staying current with modern React best practices Collaborative team player who contributes constructively to technical direction and code reviews Responsibilities Implement new features and UI enhancements across the application. Migrate legacy React class components to modern functional components using hooks. Collaborate with the front-end lead on architectural decisions and technical direction. Refactor large or complex components to improve performance, maintainability, and clarity. Integrate front-end features with Django REST APIs, including authentication and error handling. Debug and resolve issues across the codebase, including production defects. Contribute to high-quality documentation for complex features, workflows, and architectural patterns. Participate actively in code reviews, providing constructive feedback. Team and Offering Innovative, dynamic, flexible and independent growing company International team of different nationalities Physical office in Valencia, Spain. Remote or hybrid work in the EU is possible Friendly and informal environmentOnline development team meetings every two weeks, global team meeting in Valencia Fluent in English is a MUST, Spanish is advantageous Job Category IT, Junior front-end developer, Mid-Senior front-end developer, Senior front-end developer Minimum qualification Bachelor in Informatics/Computer science #J-18808-Ljbffr
