Fullstack for SaaS with Nextjs, Coolify, Stripe, Websockets, Supabase Offline

Fullstack: Front-End Engineer (Next JS) with Backend work – Real-Time Stock-Data Platform. 
 

We need additional set of hands who help bring live our platform for a fast, intuitive, and beautiful experience for our users. 
 

What you could be working on

• Help build the dashboard. Implement responsive, real-time pages (React + TypeScript + WebSockets) that surface live quotes, heat maps, and technical indicators without lag.
• Data visualisation. Craft interactive charts (Candlestick, Depth, Volume, etc.) with charting widgets.
• Subscription & auth flows. Integrate Stripe (or similar) checkout, handle account tiers, trial gates, and secure session management.
• Performance & UX. Optimise bundle size, lazy-load heavy components, and keep Lighthouse scores high—even during high-volume market opens.
• Design collaboration. Work hand-in-hand with product/design (Figma) to iterate quickly on new widgets, colour themes, and mobile layouts.
• Testing & monitoring. Set up testing Library and basic front-end metrics.
• DevOps light-touch. Ship builds through CI/CD (GitHub Actions), deploy to Coolify
   

Must-have experience

• 2+ years modern front-end development.
• Real-time data & WebSockets. You’ve built UIs that stay in sync with live streams (finance, sports, IoT, gaming, etc.).
• Data-viz chops. Comfortable customising chart libraries or rolling your own components.
• Git workflow & code reviews in a small, fast-moving team.
   

Nice-to-haves

• Familiarity with TradingView, Plotly, or financial-chart libraries
• Basic understanding of options/technical analysis (EMA, VWAP, IV, etc.)
• Coolify, Supabase, Stripe, Websockets experience