Founding Frontend Engineer

Shuffle Energy builds software that unlocks flexibility in heat assets, batteries and EVs so those devices can help balance the grid and make clean electricity cheaper for households and businesses. As a founding frontend engineer you’ll take ownership of the UI, frontend architecture and the mobile-first consumer experience – shaping how partners, operators and customers see and act on energy data.

Responsibilities

• Ship core UI for admin tooling and partner workflows (assets, tariff viewer, regional maps).
• Architect the mobile-first Shuffle Consumer App (PWA patterns, offline handling, efficient sync).
• Build a reusable component library and design system – accessibility, theming, performance.
• Deliver high-performance data dashboards and map overlays for large time-series.
• Pick up fullstack tasks as needed – API design, Prisma migrations and deployment patterns – working with the CTO and data lead.

• Experience building production React applications with TypeScript and Next.js, or equivalent demonstrable work (open source, shipped product, portfolio).
• Proven mobile-first / PWA experience and a performance focus on small screens.
• Experience building component libraries or applying design-system thinking (reusable APIs, theming, accessibility).
• Willingness to pick up backend / full-stack work when needed (API contracts, DB migrations, deployment patterns).
• UK-based – we can’t sponsor visas at this time; you must have the right to work in the UK and be able to attend in-person ~monthly.
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• Flexibility services, energy trading or IoT assets; data / time-series work; practical mapping (GeoJSON/Leaflet) and charting; NestJS/GraphQL/Azure.