Full-Stack Implementation

Accessibility basics for forms and components

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

Apply a partitioned write rate limit

Partitions limits by authenticated user or trusted client address and returns useful 429 retry metadata.

Authorize a loaded resource by ownership

Loads a resource once, evaluates owner-or-capability authorization, and avoids trusting route ownership claims.

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.

.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.

ASP.NET Core Practical API Labs

Build the endpoint, protect its boundaries, and make failure behavior explicit.

A hands-on ASP.NET Core interview track covering typed contracts, validation, list queries, overposting, idempotency, concurrency, bulk writes, capability and resource authorization, secure files, downstream calls, durable jobs, webhooks, and rate limiting.