Next.js / React.js Web Developer (RARR Job 6292)

What You'll Build

• Build the web portal using Next.js 16 (App Router) - live dashboards, alert views, device management
• Implement real-time data updates using WebSockets or Server-Sent Events for live generation metrics
• Build interactive charting components - energy yield timelines, Performance Ratio trends, MPPT comparison charts (Recharts / Chart.js)
• Create the monthly generation report viewer - downloadable PDF preview in browser
• Build multi-site management UI - device list, health scores, maintenance calendar
• Implement authentication flows with JWT tokens from the Django backend
• Optimise for performance - Core Web Vitals, lazy loading, code splitting
• Collaborate with the Flutter engineer to maintain consistency in design language across web and mobile

Required Skills

• React.js - hooks, context, component composition, custom hooks, state management
• Next.js - App Router or Pages Router, SSR vs SSG decisions, API routes
• TypeScript - basic typing, interfaces, generics. Or strong JavaScript with a willingness to adopt TS.
• CSS / Tailwind CSS - responsive layouts, dark mode, component-level styling
• REST API integration - fetch / axios, error handling, loading states, optimistic UI
• Git - clean commit history, pull request workflow
• Responsive design - mobile-first, tested across viewport sizes

Bonus Skills (Good to Have)

• Data visualisation experience - Recharts, D3.js, Apache ECharts, or similar
• WebSocket / real-time UI - live updating dashboards, connection handling
• Grafana embedding - iframes or Grafana API integration for embedded dashboards
• Testing - Jest, React Testing Library, Playwright for E2E
• Basic understanding of IoT / energy data - not required but a plus
• Figma - ability to translate design mockups to pixel-accurate components

You'll Thrive Here If You

• Have a portfolio, GitHub projects, or freelance work that shows real React / Next.js builds
• Care about user experience - not just making it work, but making it clear and fast
• Are comfortable with ambiguity - design specs are sometimes rough, you iterate
• Ask questions early, communicate blockers clearly, and review others' PRs constructively
• Are excited about building a product used by real solar plant operators, not just internal tools

What You Get

• Experience building real-time industrial data dashboards - rare frontend portfolio piece
• Ownership over the web product - your decisions ship
• Exposure to backend APIs, ML outputs, and IoT data pipelines
• Direct path to senior frontend or full-stack role as the product grows