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

About this role

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