Note: The job is a remote job and is open to candidates in USA. Sphere is seeking a Senior Next.js Engineer to take ownership of their production-grade frontend platform built with Next.js. The role involves stabilizing the frontend codebase, introducing architectural consistency, and improving scalability and maintainability while continuing active development.

Responsibilities

• Analyze existing Next.js (Vercel-hosted) application and identify architectural gaps
• Define and implement a clean and scalable frontend architecture
• Build and maintain a consistent frontend data layer / API abstraction layer
• Improve application performance, maintainability, and scalability
• Refactor fragmented or inconsistent code structures
• Ensure consistent patterns across pages, components, and modules
• Continue delivery of new features alongside stabilization work
• Collaborate with stakeholders to translate requirements into technical implementation
• Leverage AI-assisted development tools to improve delivery efficiency

Skills

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

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