Note: The job is a remote job and is open to candidates in USA. Sphere is looking for a Senior Next.js Engineer to take ownership of an existing production-grade frontend platform built with Next.js and hosted on Vercel. The main purpose of this role is to stabilize the frontend codebase, introduce architectural consistency, and improve 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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