Senior Frontend Developer

Що робити

Frontend Development: Implement responsive, accessible production web interfaces using JavaScript, HTML5, CSS3, and React, ensuring clear loading, empty, error, and disconnected states.
Operational Dashboards & 3D Maps: Build live and historical dashboards for counts, occupancy, crowd levels, heatmaps, movement patterns, and alerts, integrating with 3D Map/City Model APIs.
Backend & API Integration: Develop and maintain Node.js APIs and adapters to existing backend services and Vantiq (REST and WebSockets/event-driven updates).
Performance & Security: Optimize rendering, pagination, and caching for dashboard scale while displaying clear timestamps and data freshness. Enforce server-side access controls, input validation, and secure secret handling.
Testing & Engineering Quality: Write unit, component, integration, and automated E2E tests. Resolve defects and maintain traceable, reproducible builds in Customer-controlled repositories.

Experience: At least 5 years of relevant professional web application development experience.
Domain Expertise: Portfolio of delivered data-rich dashboards or comparable operational applications. Smart-city, geospatial, or control-room dashboard experience is preferred.
Core Tech Stack: Strong hands-on skills in JavaScript, semantic HTML5, CSS3, React (components/hooks, routing, state management), and Node.js. TypeScript experience is desirable.
Infrastructure & Tools: Git, package/build tooling, browser developer tools, performance profiling, automated testing, and deployment on customer-managed infrastructure using approved offline/local tools.
UI/UX & Integration: Proven ability to translate operator workflows into wireframes, prototypes, and reusable components. Solid experience building REST APIs, real-time WebSocket integrations, charts, tables, maps, and authentication/authorization flows.