Senior Front-End Engineer (Next.js 16+)

Role Overview

We are seeking a Senior Front-End Engineer with deep expertise in Next.js 16+ to architect and deliver high-performance, secure, and scalable web applications. The ideal candidate has 5+ years of effective front-end experience working on complex, production-grade systems and demonstrates strong ownership of architecture, performance, and browser-level behavior.

Core Responsibilities

• Architect and develop large-scale applications using Next.js 16+ (App Router).
• Design systems and reusable component libraries aligned with accessibility and scalability standards.
• Implement modern rendering strategies (static, dynamic, streaming, PPR).
• Leverage Cache Components ("use cache"), revalidateTag(), updateTag(), and cache invalidation strategies effectively.
• Optimize navigation and prefetching strategies (layout deduplication, incremental prefetch).
• Integrate and optimize RESTful APIs with proper caching, error handling, and data consistency.
• Apply advanced browser performance optimization (hydration control, critical rendering path, reflow/repaint minimization).
• Ensure security best practices across Server and Client Components (XSS, CSRF, auth boundaries, RSC attack surface awareness).
• Collaborate with backend and DevOps teams on CDN, edge runtime, and caching-layer strategies.
• Lead code reviews, mentor engineers, and define engineering standards.

Required Technical Expertise

- Next.js 16+

• App Router architecture
• React Server Components (RSC)
• Client/Server boundary management (use client)
• Server Actions
• Advanced SEO techniques
• Cache Components ("use cache")
• Data cache control (revalidateTag, updateTag)
• Streaming & Suspense
• Partial Prerendering (PPR)
• Route groups, parallel routes, loading/error boundaries
• Proxy model (proxy.ts)
• Edge vs Node runtimes
• Advanced state management

- React & TypeScript

• Advanced React patterns
• Hooks, context, composition patterns
• React Compiler awareness
• Strong TypeScript typing patterns for large codebases

- Performance & Tooling

• Bundlers and build optimization
• Bundle analysis & performance profiling
• Hydration debugging & mismatch resolution
• Web Vitals optimization
• Lazy loading & code splitting strategies

- Browser & Web Fundamentals

• Deep understanding of:

o Event loop & task queues

o Rendering lifecycle (layout, paint, compositing)

o Memory management

o Network layers & HTTP caching

• Accessibility (WCAG compliance)
• Modern CSS architecture & scalable styling systems

- Security

• Secure RSC boundaries
• API layer protection
• Secure headers & CSP
• Authentication/authorization flows
• Awareness of framework-level vulnerabilities and patch management

Experience Requirements

• Minimum 5 years of professional front-end development experience
• Proven involvement in complex, high-traffic, or mission-critical applications
• Demonstrated ownership of architectural decisions and performance improvements
• Experience building and maintaining design systems in production.

Preferred

• Familiarity with distributed caching strategies (CDN, edge caching)
• CI/CD and deployment optimization experience
• Backend familiarity (Node.js, NestJS, or similar)

Originally posted on Himalayas