React

Accessibility basics for forms and components

Explains labels, keyboard behavior, focus, semantic HTML, errors, color contrast, and accessible custom controls.

A Next.js page streams locally but arrives all at once in production. How do you diagnose it?

Traces buffering through the production artifact, proxy chain, compression, cache, platform adapter, and version consistency.

Avoid duplicated derived state in React

Explains when to derive values during render instead of storing duplicate state that can drift.

Build a filtered and paginated list page

Explains URL-backed filters, API query parameters, pagination, sorting, empty states, and shareable list views.

Build an accessible profile form

Implements labeled fields, client validation, error summaries, focus recovery, and pending submission state.

Build an admin CRUD workflow with permissions

Explains admin list/edit/delete workflows with capability checks, audit events, confirmation, validation, and recovery.

.NET Full Stack

Full-cycle .NET full-stack interview preparation.

A role-based preparation path covering C#, ASP.NET Core APIs, data access, frontend integration, testing, deployment, system design, real-life scenarios, and behavioral interview topics.

React & Next.js Frontend Foundations

Frontend mechanics for product-focused full-stack engineers.

A focused frontend path covering TypeScript and browser foundations, React components and state, hooks, data fetching, Next.js rendering, accessibility, testing, performance, security, and practical UI implementation.

React & Next.js Practical UI Labs

Build the interaction, handle every state, and prove it through user behavior.

A hands-on frontend interview track covering accessible forms, API error mapping, duplicate-submit protection, uploads, data states, search races, optimistic rollback, URL filters, server-client boundaries, capability-aware UI, hydration, component tests, error recovery, render performance, and Playwright flows.

Full-Stack Product Features

Ship practical product features across UI, API, data, and production quality.

A focused full-stack interview track for implementing real product features: forms, lists, search, mutations, uploads, auth-aware UI, admin workflows, testing, and production debugging.