Senior Next.js Engineer (Frontend Platform)

Role Overview

Senior Next.js Engineer (Frontend Platform) joining Sphere to take ownership of an existing production-grade frontend platform. The application is already migrated to Next.js but needs clearer architecture, standardized patterns, and a more consistent frontend structure—while still delivering new features.

Responsibilities

• Analyze the existing Vercel-hosted Next.js application and identify architectural gaps
• Define and implement a clean, scalable frontend architecture
• Build and maintain a consistent frontend data/API abstraction layer
• Improve performance, maintainability, and scalability
• Refactor fragmented or inconsistent code structures
• Establish consistent patterns across pages, components, and modules
• Continue active feature delivery alongside stabilization work
• Translate requirements with stakeholders into technical implementations
• Use AI-assisted development tools to improve delivery efficiency

Requirements

• 5+ years of frontend development experience
• Production experience with Next.js and React
• Experience with Vercel deployments and CI/CD workflows
• Strong understanding of frontend architecture and system design
• Experience with a headless CMS (WordPress, Contentful, Strapi, etc.)
• Experience designing data fetching strategies: SSR / SSG / ISR / client-side hybrid
• Experience improving existing large-scale codebases
• Experience using AI-assisted development tools (Claude, Cursor, Copilot, etc.)
• Ability to impose structure in fast-moving or loosely organized environments
• Strong communication with non-technical stakeholders

Nice to Have

• Experience scaling Next.js applications on Vercel
• Performance optimization expertise (e.g., Core Web Vitals, caching strategies)

Contract Details

• Duration: 3–4 months (possible extension)
• Work model: Fully remote (immediate start preferred)