Full-Stack Engineer (Next.js & TypeScript)

This role is suitable for a Senior Full-Stack Engineer with at least 3 years of experience building modern React, Next.js, TypeScript, and serverless applications.

The candidate should be skilled in Tailwind CSS, Radix UI, Node.js, PostgreSQL, Redis, Supabase, Turborepo, automated testing, state management, browser performance, edge caching, Clerk, Stripe, and REST/GraphQL APIs.

They should be familiar with developing responsive interfaces, micro-frontends, drag-and-drop builders, real-time collaboration tools, backend integrations, modular monorepos, and performance-optimized applications.

How would you structure a Next.js 15 application using the App Router for optimal performance and maintainability?

I would separate server and client components carefully, keep data fetching close to the route that needs it, and use nested layouts for shared UI. I would also apply streaming, route-level caching, and clear feature boundaries within the monorepo.

What are the key differences between React Server Components and Client Components in Next.js?

Server Components render on the server and reduce client-side JavaScript, while Client Components are required for browser APIs, state, effects, and event handlers. I would use Server Components by default and introduce Client Components only where interactivity requires them.

How would you implement a secure Server Action that updates PostgreSQL data?

I would validate all inputs on the server, authenticate and authorize the request, and execute the database operation inside a transaction when necessary. Errors would be handled without exposing sensitive details, and the action would revalidate affected routes or cache tags.

How would you design caching with Redis, Next.js, and edge caching?

I would use Redis for shared, server-side caching of frequently accessed or expensive data, with explicit TTLs and invalidation strategies. Next.js data caching and edge caching would be applied to safe, mostly immutable responses while ensuring personalized data is not accidentally cached publicly.

How would you organize a Turborepo monorepo for a full-stack TypeScript application?

I would separate deployable applications from reusable packages such as UI components, database access, configuration, and shared types. Each package would expose a clear public API, use consistent TypeScript and linting rules, and avoid circular dependencies.

What techniques would you use to improve Core Web Vitals in a Next.js application?

I would optimize image delivery, reduce JavaScript shipped to the browser, stream server-rendered content, and reserve layout space to prevent cumulative layout shift. I would measure real-user performance and use profiling tools to identify long tasks, slow requests, and rendering bottlenecks.

How would you build a drag-and-drop interface that remains responsive with many items?

I would use stable keys, localize state updates, and avoid re-rendering the entire collection during pointer movement. For large datasets, I would combine virtualization with throttled or requestAnimationFrame-based updates and persist changes through debounced mutations.

How would you implement real-time collaboration while preventing conflicting updates?

I would synchronize changes through a WebSocket or Supabase real-time channel and define a consistent conflict-resolution model, such as operational transforms, CRDTs, or server-authoritative versioning. Updates should include identifiers and versions so clients can detect stale writes and reconcile state safely.

How would you integrate Clerk authentication and protect application routes and APIs?

I would enforce authentication in server-side route handlers, Server Actions, and protected layouts rather than relying only on client-side checks. Authorization would be evaluated separately from authentication, using user identity and roles or organization membership to control access to resources.

How would you test a TypeScript full-stack application with high coverage?

I would use unit tests for utilities and domain logic, component tests for interactive UI behavior, and integration tests for database and API boundaries. Critical user journeys such as authentication, billing, drag-and-drop workflows, and collaboration would also receive end-to-end coverage.

Join a product engineering company building lightning-fast web applications used daily by thousands of businesses. As a Full-Stack Engineer, you’ll develop Next.js 15 interfaces, drag-and-drop builders, real-time collaboration tools, and Node.js integrations across PostgreSQL, Redis, Supabase, and a Turborepo monorepo. This is a fully remote, worldwide, full-time role offering $130,000–$165,000 plus equity. Apply to work with a modern TypeScript stack, solve exciting performance challenges, and enjoy flexible asynchronous work, global healthcare, and retirement or pension matching.